eChapters

ABSTRACT

Survey and research trial conducted for the selection of promising tree based farming system in Paonta valley region of H.P. have been summarized in the manuscript. Tree based farming innovations with intercropping, their planting technology and geometry around field/ farm, pure plantation , block plantation of trees grown with agricultural/fruit crops for better productivity per unit of land have been suggested for improving socio-economic condition of the regional farmers.

In addition to cultivated oilseeds, many other seeds and related plant products serve as sources of vegetable oils. They are obtained from large trees, shrubs or from different crops and their products. It may be the seeds or the husk, or the germ or other parts of the fruit or seed which are rich in oil. These are in general, referred to as non-conventional vegetable oil sources. They are highly important for the food/feed and non-food industries. Non- food and industrial uses are plenty.

But for the availability of these non- traditional oilseeds and their products, there would have been great pressure on the cultivated seeds. The products, mainly oil, help run our machines and protect them from getting rusted. Some of them protect our crops from pests and deseases. They even serve as beauty aids in the form of cosmetics. Some of them serve as sources of medicine for men and animals.

In recent years, some non-conventional/ non-edible oilseeds have become the raw material for biofuel/bioenergy. They have gained prominence, due to shortage of conventional oils. Seeds of more than 100 species occurring in the wild or cultivated are known to contain oil in considerable quantities. There is a vast scope for production and utilization of oil from these sources (Ambasta, 1986, Bhattacharya, 2002 and Vimal and Naphade, 1980).

In this chapter, the major non-conventional oilseeds of tree origin, by product oilseeds or other minor sources, are being dealt with. They are ricebran, corn, sal, mahua, jatropha, kokum, melia, rubber, mango kernel, kusum, simarouba, neem, karanj, crambe, moringa, tumba, jojoba and tobacco seed etc. Emphasis is given to the composition and quality of oil, cake and other plant parts. Their food, non-food and medicinal uses are presented. Oil extraction and related post harvest technological aspects are also discussed.

India is a huge importer of crude oil and spends about Rs. 1,200 billion of foreign exchange every year to meet 75% of its oil needs (Anand, 2006). This has affected its balance of payment adversely, especially after the unprecedented rise incrude oil prices. Being an agricultural country endowed with varied climates, nutrient-rich soil and ability to grow many different crops, India offers a great promise as a producer of surplus raw material for biodiesel and bioethanol production. India’s biofuel production currently accounts for only 1 percent of global production (Shinoj et al., 2012). Although all oils can be used, edible oils as a source for biodiesel production have to be ruled out because they are required for cooking and food purposes. Therefore, non-edible oils are the premier raw material for biodiesel production in India. Seeds rich in these oils are mostly produced by perennial species. Hence these trees are referred to as tree-borne oilseed species (TBOS) and they produce TBOs (Aurora and Kumar, 2015). TBOs are cultivated/grown in the country under different agro-climatic conditions in a scattered form in forest and non-forest areas as well as in waste land/deserts/hilly areas. The country has enormous potential of oilseeds of tree origin like mahua (Madhuca indica),neem (Azadirachta indica), simarouba (Simarouba glauca), karanja (Pongamia pinnata), ratanjyot (Jatropha curcas), jojoba (Simmondsia chinesis), cheura (Diploknema butyracea), kokum (Garcinia indica),wild apricot (Prunus armeniaca), wild walnut (Aleurites molucana), kusum (Schleichera oleosa), tung (Vernicia fordii), etc. The best characteristic is that it can be grown and established in the wasteland and have varied agro-climatic conditions. (Aurora and Kumar, 2015)

ABSTRACT

In agroforestry and forestry sectors, little efforts have been made for tree improvement research in India. Planting of genetically poor quality of seedlings/propagules is one of the major reasons of low level impact of agroforestry systems in Indian Agriculture. Most of the agroforestry tree species have not been even gone through simple selection for superior types (plus trees). Exploration, collection and conservation of germplasm of woody agroforestry species, selection for fast growing trees, clonal propagation, seed orchards and other advances in tree breeding are still in fancy stage. At present, all the woody agroforestry species are propagated through collected seeds and/or propagules by unskilled labourers. It is well known that through tree breeding and establishment of seed orchards of improved genotypes, significant achievements towards the improvement of productivity of economic tree products is possible as happened in agricultural crops in India and industrial trees in USA and Europe. Even by small efforts of tree improvement, productivity of economic tree products can be raised by 20-30 per cent. In this paper breeding methodology, limitations, status and strategy of various agroforestry species has been discussed in special reference to Leucaena leucocephala (Subabul), Prosopis cinereria (Khejri), Azadirachta indica (Neem), Populus spp., Dalbergia sissoo (Shisham), Acacia nilotica (Desi babul), Eucalyptus spp. Casuarina equisetifolia (Casuarina), Albizia lebbek (Desi siris) and Jatropha curcus (Ratanjot).

Agroforestry systems are not simply systems where trees and crops or animals give useful products to the farmers, rather systems where trees and crops and/or animals interact. Interaction literally means influence or mutual or reciprocal action. So component interaction refers to the influence of one component of a system on the performance of other component as well as the system as a whole.

In agroforestry systems, trees are grown in close proximity to crops and pasture. Their performance would largely depend on their ability to share various growth resources in a given environmental situation. Various interactions take place between the woody trees and herbaceous plants (crops or pastures) which is referred to as tree-crop interface. These interactions take place through the media of soil and microclimate and may exert favourable or adverse effects on the crop. Study of interaction helps to know how the components of agroforestry utilize and share the resources of the environment, and how the growth and development of any of the components will influence the others. Interaction occurs both above and below the ground and includes a complex set of interactions relating to radiation exchange, the water balance, nutrient budget and cycling, shelter and other microclimatic modifications.

The success of an agroforestry system relies heavily on exploitation of the component interactions. In an ideal relationship, production of trees as well as crops or grasses in combination could be comparable to their sole performance. Agroforestry could be even more advantageous if the production of associated components is increased due to influence of trees. This is possible because trees are capable of improving productivity of soil in many ways. A large number of trees are known to fix nitrogen symbiotically. Nevertheless, instances of crop inhibition in association of trees are not uncommon. Such inhibitions are primarily caused by shade effect as well as competition for below-ground resources such as nutrients and water. In some cases inhibitory effect may also result from allelochemicals secreted by some of the tree species.

Agroforestry systems are not simply systems where trees and crops or animals give useful products to the farmers, rather systems where trees and crops and/ or animals interact. Interaction literally means influence or mutual or reciprocal action. So, component interaction refers to the influence of one component of a system on the performance of other component as well as the system as a whole.

In agroforestry systems, trees are grown in close proximity to crops and pasture. Their performance would largely depend on their ability to share various growth resources in a given environmental situation. Various interactions take place between the woody trees and herbaceous plants (crops or pastures) which is referred to as tree-crop interface. These interactions take place through the media of soil and microclimate and may exert favourable or adverse effects on the crop. Study of interaction helps to know how the components of agroforestry utilize and share the resources of the environment, and how the growth and development of any of the components will influence the others. Interaction occurs both above and below the ground and includes a complex set of interactions relating to radiation exchange, the water balance, nutrient budget and cycling, shelter and other microclimatic modifications.

The success of an agroforestry system relies heavily on exploitation of the component interactions. In an ideal relationship, production of trees as well as crops or grasses in combination could be comparable to their sole performance. Agroforestry could be even more advantageous if the production of associated components is increased due to influence of trees. This is possible because trees are capable of improving productivity of soil in many ways. A large number of trees are known to fix nitrogen symbiotically. Nevertheless, instances of crop inhibition in association of trees are not uncommon. Such inhibitions are primarily caused by shade effect as well as competition for below-ground resources such as nutrients and water. In some cases, inhibitory effect may also result from allelochemicals secreted by some of the tree species.

Agroforestry systems are not simply systems where trees and crops or animals give useful products to the farmers, rather systems where trees and crops and/ or animals interact. Interaction literally means influence or mutual or reciprocal action. So component interaction refers to the influence of one component of a system on the performance of other component as well as the system as a whole. In agroforestry systems, trees are grown in close proximity to crops and pasture. Their performance would largely depend on their ability to share various growth resources in a given environmental situation. Various interactions take place between the woody trees and herbaceous plants (crops or pastures) which is referred to as tree-crop interface. These interactions take place through the media of soil and microclimate and may exert favourable or adverse effects on the crop. Study of interaction helps to know how the components of agroforestry utilize and share the resources of the environment, and how the growth and development of any of the components will influence the others. Interaction occurs both above and below the ground and includes a complex set of interactions relating to radiation exchange, the water balance, nutrient budget and cycling, shelter and other microclimatic modifications.

Agroforestry systems are not simply systems where trees and crops or animals give useful products to the farmers, rather systems where trees and crops and/ or animals interact. Interaction literally means influence or mutual or reciprocal action. So, component interaction refers to the influence of one component of a system on the performance of other component as well as the system as a whole.

In agroforestry systems, trees are grown in close proximity to crops and pasture. Their performance would largely depend on their ability to share various growth resources in a given environmental situation. Various interactions take place between the woody trees and herbaceous plants (crops or pastures) which is referred to as tree-crop interface. These interactions take place through the media of soil and microclimate and may exert favourable or adverse effects on the crop. Study of interaction helps to know how the components of agroforestry utilize and share the resources of the environment, and how the growth and development of any of the components will influence the others. Interaction occurs both above and below the ground and includes a complex set of interactions relating to radiation exchange, the water balance, nutrient budget and cycling, shelter and other microclimatic modifications.

INTRODUCTION

Promoting agroforestry is a major opportunity to deal with problems related to land-use and CO2-induced global warming (Albrecht and Kandji 2003). As per recent projections, the area of the world under agroforestry will increase substantially in the near future. Undoubtedly, this will have a great impact on the flux and long-term storage of carbon in the terrestrial biosphere (Dixon 1995). Several studies have shown that inclusion of trees in the agricultural landscapes often improves the productivity of systems while providing opportunities to create carbon sinks (Winjum et al. 1992; Dixon et al. 1993; Krankina and Dixon 1994; Dixon 1995). The amount of carbon sequestered largely depends on the structure and function of agroforestry systems - which to a great extent, are determined by environmental and socio-economic factors. Other factors influencing carbon storage in agroforestry systems include tree species and management system. The significance of agroforestry with regards to carbon sequestration and other CO2 mitigating effects is being widely recognized. There are sound reasons to believe that agroforestry can contribute significantly to carbon sequestration. It is important that research attention is focused on this aspect of agroforestry systems (Nair and Nair 2002).

This chapter introduces tree improvement approaches aimed at developing forest species with enhanced resistance to biotic and abiotic stresses. It examines the challenges posed by climate change and discusses conventional and modern tree breeding techniques. The chapter further explores climate-smart tree improvement, resistance to pests and diseases, and tolerance to environmental stresses such as drought, heat, salinity, and other changing climatic conditions. By integrating breeding strategies with modern technologies and climate-resilience objectives, the chapter emphasizes the development of improved forest trees capable of maintaining growth, productivity, survival, and ecosystem functions under changing environmental conditions.

1. Tree improvement consists of_____________ and_____________. (Silviculture and tree breading)
2. Variation within the local progenies is due to_____________. (Environment)
3. Larger units of similar vegetation are referred as_____________. (Biome)
4. _____________ is the only gaseous hormone. (Ethylene)
5. More genetic gain can be achieved in the_____________ seed orchard. (Clonal)
6. _____________ is known as father of genetics. (Mendel)
7. Pure line theory was proposed by_____________. (Johannsen)
8. Self-incompatibility hampers the development of_____________. (Inbreds)
9. Progeny having both parent identities is known as_____________. (Fullsib)

Tree leaves serve as a traditional source of roughage for livestock such as sheep, goats, cattle, and buffaloes. During the initial growth phases, these leaves exhibit a relatively high crude protein percentage alongside lower fiber content. However, as the tree matures, there is a notable decline in protein levels and a corresponding increase in crude fiber content. Generally, tree leaves are abundant in Ca, often containing two to three times the amount found in cultivated fodder, but they are deficient in phosphorus, leading to an imbalanced Ca to P ratio. The presence of tannic acid further reduces the digestibility of the protein found in these leaves. The dry matter content of most tree leaves typically falls within the range of 30-40%, accompanied by a significant protein concentration. Although the crude fiber percentage in tree leaves is lower than that in grasses and hays, their digestibility remains poor due to the tannic acid content. Additionally, while the ether extract in tree leaves is relatively high, it is often less digestible compared to that found in cultivated fodder.
Leguminous trees and shrubs
Animals that graze on mature grass pastures frequently enhance their diet by consuming the leaves of trees and shrubs, many of which belong to the legume family. The term ‘browse’ refers to the food obtained in this manner; in addition to being consumed directly by animals, browse can also be harvested and transported to livestock kept in enclosures. The leaves of leguminous trees are notably rich in protein (200 300 g/kg DM) and minerals, although they also contain a significant amount of fiber (50 60% neutral-detergent fiber/DM). The presence of tannins and potentially other compounds can reduce the palatability of browse, suggesting that its nutritional value may serve as a reserve food source for times when grass is no longer accessible. A prominent example of a browse species is leucaena (Leucaena leucocephala), commonly referred to as ipil-ipil, which is an important tropical legume widely cultivated across various regions. It serves as a significant source of protein and minerals and is abundant in β-carotene. However, it also contains the toxic amino acid
mimosine. Other notable leguminous forages include Gliricidia (Gliricidia sepium), Sesbania (Sesbania sesban) and Acacia (Acacia angustissima).

1. A plant cell constitutes the_____________ per cent of water. (80-90%)
2. Photosynthesis is the process of conversion of_____________ energy into _____________ energy. (Radiant, Chemical)
3. Dark reaction of photosynthesis occurs in_____________ and light reaction occurs in _____________ region of chloroplast. (Matrix, Lamellae)
4. The connecting link between glycolysis and Kreb’s cycle is_____________. (Pyruvic acid)
5. _____________ is responsible for turgidity of plant cells. (Osmosis)
6. A diffusion of liquids through a semi-permeable membrane is known as_____________. (Osmosis)
7. The diffusion of solvent particles into a living cell is known as_____________. (Endo-osmosis)
8. The diffusion of solvent particles out of a living cell is known as_____________. (Exo-osmosis)
9. The outward pressure exerted by the cell solution on the cell wall which is developed due to osmotic diffusion of water is called as_____________. (Turgor pressure)

Trees that provide materials for propagation are called mother trees. Selection of mother trees is important because the young trees will be expected to inherit the favourable characteristics from the mother tree, such as fast growth, upright or spreading shape of the tree crown, good flowering and fruiting, and tolerance of diseases or pests. There may be sexual propagation by seed or vegetative propagation by using other parts of the tree. The genetic make-up of the seeds differs due to recombination of the genes, resulting in seedling variation. Thus, all the seedlings may look like the mother tree in some respects, but no two seedlings are the same. In case of vegetative propagation through cutting, layering, grafting or budding, the genetic make-up of the young tree is exactly the same as that of the mother tree. Consequently, all new trees grown vegetatively from one mother tree have the same set of gene pairs and therefore the same characteristics; they form a so called clone. Differences between plants of a clone can only be caused by different growing conditions.

1. _____________ is a fertilize ovule consisting of intact embryo stored food and seed coat, which is viable and has got the capacity to germinate. (Seed)
2. The content of other than seeds such as straw, soil particles, small stones and seeds of other species is called_____________. (Inert material)
3. Initial seed obtained from the selected individual plants of a particular variety or parental line, used to produce breeder seed and forms the basis of the total seed production chain is_____________ seed. (Nucleus)
4. The loss of weight of a sample when it is dried due to decrease in_____________. (Moisture)
5. A specified quantity of seed, physically identifiable in respect of which an international analysis certificate may be issued is called_____________. (Seed lot)
6. The blowers are used for_____________. (Purity of seeds)
7. A type of seed that is not certified but the labelling is done to indicate the quality or standard in a truthful manner is called_____________ seed. (Truthfully labelled seed)
8. The reagent used for biochemical test for determining seed viability is_____________. (Tetrazolium chloride or Bromide)
9. The food material contained in_____________that nourishes the embryo during its development. (Endosperm)

Myristica fragrans Houtt., the nutmeg tree is unique among spice plants as the donor of two distinct spices; nutmeg and mace.Native of Indonesia (Moluccas islands), nutmeg tree grows there abundantly and is now naturalised in West Indies, Srilanka, India, Phillipines, Tropical America and Pacific Islands. (Varghese, 2000). In India, the plant is grown in certain pockets of Kerala, Tamil Nadu, Karnataka, Goa, Maharashtra, North East India and Andamans (Krishnamoorthy, 2000). It is also grown in a small scale in Srilanka, Trinidad, China, Tobago, Zanzibar and Mauritius.

Tree tomato belongs to the family solanaceae, genus Cyphomandra and species betacea. The Cyphomandra genus is made up of about 30 species. Shaw (1996) has reported that Cyphomandra genus consists of 35 species confined to the New World tropics. They were earlier described under the genus Solanum. They can be separated from Solanum  by several characters, the most important being anther characters. In Cyphomandra in the anther the connective is thickened and expanded dorsally. As a result, it is clearly differentiated from the anther thecae, which is thin walled and papillose.

Economically important plant in this genus is Cyphomandra betacea. Other important related species are Cyphomandra casana (Casana), C. craccifolia (Mountain tomato) and C. fragrans (Guava tamarillo). It has got distant affinity with Lycopersicon esculentum (Tomato), Physalis ixocarpa (Tomatillo), P. peruviana (Cape gooseberry), Solanum muricatum (Pepino Dulce) and S. sessiliflorum (Cocona).

Genus : Cyphomendra 
Species : betacea  (Cav.)  Sendtner
Family : Solanaceae
Chromosome No. : 2n = 24

The tree tomato is a bushy fruit plant which in early time was planted in the gardens high upon the mountain slopes. Presently in India, Sri Lanka and number of other countries it is grown in the hilly region. Indians of Peru at very early stages gave the world a number of food plants of which potato is of great value, and tree tomato in the only woody species of family Solanaceae. The tree is fast growing and starts to bear in about two to three years times. The egg shaped and usually smooth-skinned fruits are produced in large number in hanging clusters. The sub acidic and succulent fruits are agreeable and eaten as raw. In central America it is called tomate and cultivated at an elevation of 4000 to 8000 feet. The crop loves rich loamy soil and grows best under irrigated conditions.

Synonyms

Menispermum fenestratum Gaertn., Coscinium peltatum Merr., C. wallichianum Miers, C. maingayi Pierre, C. usitatum Pierre, C. blumeanum Miers var. epeltatum Boerl., C.wightianum Miers, C.miosepalum Diels, C.fenestratum var. macrophyllum Yamamoto, C. fenestratum var. ovalifolium Yamamoto, Pereiria medica.

In India, vernacularly it is known as Haldigach (Bengali), Tree turmeric, False calumba, Columbo weed (English), Jhar-I-haldi (Hindi), Maradashina, Maramanjali (Kannada), Maramanjal, Manjavalli (Malayalam), Jhade-halade, Venivel (Marathi), Darvi, daruharidra, Pitadaru (Sanskrit), Venivel, Bangwellgetta (Sinhalese), Maramanjal, Manjalkodi, Atturam, Kadari, Udaravi, Pasamantram, Imalam (Tamil), Manu pasupu (Telugu).

Morphological characteristics

It is a huge dioecious tree that can reach a height of 10 metres and has yellow wood and sap. The slices of stem and root are stiff and woody. The colour of the wood is yellowish-brown on the outside and yellow on the inside. The substance is found in huge woody, cylindrical, straight sections with a diameter of up to 10 cm; branchlets are terete, brown tomentose, and subsequently glabrescent with disciform petiole-scars. Leaves simple, alternate, exstipulate, broadly ovate, rounded, truncate or shallowly cordate at base, acuminate at apex, 10-32x8-22 cm, glabrescent above, hoary yellowish-white tomentellous beneath, thinly coriaceous; main nerves 5-7, palmate, with 2 pairs of distal lateral nerves; midrib and other main nerves sunken, whitish tomentose beneath above basal margin on the lamina of leaf; stipules absent.

Natural farming integrates traditional wisdom with ecological sustainability by using on-farm resources, avoiding synthetic inputs, and enhancing biodiversity. Within this framework, tree-based and multi-tier farming systems play a pivotal role in optimizing land use and ensuring environmental balance. These models are especially beneficial for small and marginal farmers in India’s varied agroclimatic zones, offering resilience, productivity, and sustainability.
Tree-based farming incorporates fruit or timber trees—like mango or guava— intercropped with pulses, vegetables, and herbs. This mimics forest ecosystems where diverse species coexist, supporting one another. Trees improve soil quality through leaf litter, reduce erosion, and help conserve moisture. Their canopy creates favorable microclimates for understory crops.
Multi-tier systems structure crops by height: tall trees form the top layer, followed by medium-height plants such as papaya, bushy crops like chillies, and ground-level creepers such as pumpkin. This vertical arrangement maximizes sunlight use and space efficiency, improving overall yield per unit area.
These systems enhance soil fertility, promote nutrient recycling, and reduce crop vulnerability to pests and climate extremes. Practices like mulching, intercropping, and the use of Jeevamrit and Beejamrit are seamlessly integrated, reinforcing soil health and sustainability. Together, they offer a regenerative, income-diversifying strategy for natural farmers across India.

Introduction 
Tree-based biofuels, which are made from non-edible oilseeds of perennial trees, have emerged as a renewable energy source with considerable environmental and economic benefits. Unlike annual biofuel crops, tree-based biofuels have the potential for long-term yields, soil conservation benefits, and the ability to survive on marginal terrain (Dwivedi et al.,2011). Various tree species have been identified globally for their biofuel potential, with an emphasis on sustainability and low competition with food crops (Pandey et al., 2012). In India, there is a diverse range of over 100 tree species that produce seed oil suitable for biodiesel. These oil tree species can be cultivated on non-agricultural lands, ensuring that they do not compete with food and fodder production. Globally, tree-based biofuels are crucial for energy security. Palm, jatropha, pongamia, and mahua are among the feedstocks investigated by the US, Brazil, and Europe for biodiesel production. Tree-borne oilseeds (TBOs) are critical for biodiesel generation in India, which relies heavily on fossil fuel imports. India has implemented both the National Biofuel Policy (2009) and the National Agroforestry Policy (2014). The former policy aims to replace fossil fuels with biofuels, targeting a 5% replacement by 2012, 10% by 2017, and exceeding 10% beyond 2017. The latter policy focuses on integrated land use options for livelihood, environment, and energy security. Notably, important tree-borne oilseeds (TBOs) such as Jatropha, Karanj, Mahua, and Simarouba have been efficiently incorporated into agroforestry systems, yielding beneficial results and providing a significant source of non-edible oilseeds from trees. The need for alternatives to fossil fuels is particularly urgent for countries like India, which have a vibrant economy and high consumption of fossil fuels, heavily relying on imports. Biofuels, as renewable liquid fuels derived from biological sources, have proven to be promising substitutes for oil in the energy sector (Mahapatra et al.,2021). In India, the focus on biofuels is primarily on non-edible oils obtained from tree species’ seeds since oils from food crops like corn, sweet sorghum, and soybean cannot be diverted for biodiesel production (Raju et al., 2012). Tree-borne oilseeds (TBOs) are cultivated across the country in various agro-climatic conditions, including forest and non-forest areas, as well as wastelands, deserts, and hilly regions. India has a vast potential for oilseeds derived from trees, such as Mahua (Madhuca indica), Neem (Azadirachta indica),

Tree-borne vegetables spring out from woody perennial plants. There are too many trees in nature across the globe which offer edible fruits, a few of them are exploited for vegetable purpose. Of course, in popular parlance, vegetable gives the connotation of the product of herbaceous crop, but there are vegetables which are the product of woody perennials. In the present agri-horti-scenario, where diversity in product range is the most sought after aspect, attempts are underway to popularize culture of such vegetables which have not yet found commercial momentum at the grower’s field. Tree-borne vegetables are one such group which needs proper popularization to really help to percolate their farming. These vegetables being vested with woody nature, tap root system, bark covering and stress tolerance mechanism are worth exploitation under diverse farming systems prevalent across the country. Further many tree-borne vegetables are rich in nutrients also and as such add to their plus identity.

Agroforestry systems are not simply systems where trees and crops or animals give useful products to the farmers, rather systems where trees and crops and/or animals interact. Interaction literally means influence or mutual or reciprocal action. So component interaction refers to the influence of one component of a system on the performance of other component as well as the system as a whole.

In agroforestry systems, trees are grown in close proximity to crops and pasture. Their performance would largely depend on their ability to share various growth resources in a given environmental situation. Various interactions take place between the woody trees and herbaceous plants (crops or pastures) which is referred to as tree-crop interface. These interactions take place through the media of soil and microclimate and may exert favourable or adverse effects on the crop. Study of interaction helps to know how the components of agroforestry utilize and share the resources of the environment, and how the growth and development of any of the components will influence the others. Interaction occurs both above and below the ground and includes a complex set of interactions relating to radiation exchange, the water balance, nutrient budget and cycling, shelter and other microclimatic modifications.

The success of an agroforestry system relies heavily on exploitation of the component interactions. In an ideal relationship, production of trees as well as crops or grasses in combination could be comparable to their sole performance. Agroforestry could be even more advantageous if the production of associated components is increased due to influence of trees. This is possible because trees are capable of improving productivity of soil in many ways. A large number of trees are known to fix nitrogen symbiotically. Nevertheless, instances of crop inhibition in association of trees are not uncommon. Such inhibitions are primarily caused by shade effect as well as competition for belowground resources such as nutrients and water. In some cases inhibitory effect may also result from allelochemicals secreted by some of the tree species.

Bonsai first appeared in China over a thousand years ago on a very basic scale, known as pun-sai, where it was the practice of growing single specimen trees in pots. These early specimens displayed sparse foliage and rugged gnarled trunks which often looked like animals, dragons and birds.

With Japan’s adoption of many cultural trademarks of China, bonsai was also introduced to Japan during the Kamakura period (1185-1333) by means of Zen Buddhism, which at that time was rapidly spreading around Asia. Once bonsai was introduced into Japan, the art was refined to an extent not yet approached in China. Over time, bonsai, which was confined to the Buddhist monks and their monasteries, were introduced as a symbol of prestige and honour. It became an important part of Japanese life by being displayed on specially designed shelves.  For the Japanese, bonsai represents a fusion of strong ancient beliefs with the Eastern philosophies of the harmony between man, the soul and nature.

Renewable energy sources, are the sources of power that quickly replenish and which can be used again and again. For this reason they are sometimes called energy resources. The main sources of renewable energy and their advantages and disadvantages are :

Solar
Energy from sunlight is captured in solar panels and converted into electricity.  Potentially it is an infinite source of energy supply, but the solar panels are costly.

Vedic literature indicates that the energy in the universe gets transmitted into the human body through star galaxies. The star galaxies of our universe are divided into 27 parts each signified by a particular star (nakshatra). Every human being is assigned to a particular star by virtue of his birth time.  Each star is associated with a tree. The tree associated with his star gives the universal energy to the human being. Thus astrology gives us a chance to identify the tree which is auspicious to us, being associated with our birth star. When one plants the tree associated with his birth star near his dwelling, it will bring good luck and prosperity to him.

The early inhabitants of our country were very conscious of the placement of their dwellings in beautiful surroundings. The best examples are from the West Coast, where the houses were traditionally constructed in the midst of gardens. The Arab traveller and historian, Ibn Batuta, in his itinerary in coastal Malabar recorded their picturesque beauty, as early as in the 10th century AD. The whole compound was planted with trees, which were useful and aesthetic in appeal. The scholarly elite used trees and shrubs mentioned in Kalidasa’s work in their planting schemes. Through the tree and foliage, a path is formed to the main village.

I. General information

1. Common names of trees

• Acacia nilotica – Black babool, Indian gum-Arabic tree
• Acacia auriculiformis – Golden shower
• Adansonia digitata – Baobab, Monkey bread
• Adenanthera pavonina – Red sandal wood, bead tree, red wood
• Ailanthus excelsa – tree of heaven, paradise tree
• Albizia julibrissin – Pink siris, silk tree

Definition: A tree is a perennial plant with an elongated stem or trunk, supporting branches and leaves in most species.

Trees are not a taxonomic group but include a variety of plant species that have independently evolved a woody trunk and branches as a way to tower above other plants to compete for sunlight. Trees tend to be long lived, living up to several hundred years.

Trees

A trees is a woody perennial plant with clear stem or trunk. Trees trend to be long leaved living up to several 100 year.

TREE- logical meaning of each letter

T - Temperature and micro-climate moderation.

R - Removal of air pollutant.

E- Erosion control.

E - Energy conservation.

Trees are amazing nature’s creations that are not only important for mankind but also sustain ecological balance in nature. They are the source of livelihood and provide valuable raw material for manufacture of household utility products. They are important from spiritual aspect and have been exhaustively described in ancient Indian texts with their significant Ayurvedic and other potential health benefits. Botanically a “tree.” is a large, long-lived (perennial) woody plant that attains a height of at least 6 m (20 ft) at maturity. A tree possess certain characteristic features such as a trunk (single main self-supporting stem) which gives off spreading branches, twigs and foliage to make a crown. Since the diameter at breast height (dbh) of trees is determined internationally at 1.35 m (4.5 ft) above the ground, a tree must be un-branched at least up to 1.5 m (5 ft) from the ground.

Urbanization coupled with industrial development creates problems of environment like air pollution, water pollution, noise pollution and civic ugliness. Of late, there is a greater awareness of environmental issues and increasing understanding of several attributes of vegetation. This led to an intensification of activity in the field of landscape horticulture to combat pollution and create an aesthetic environment for recreation and healthy living. Planning and execution of landscape projects for different urban locations should be done to meet both aesthetic and ecological requirements.

Trenching and diversion structures are engineering methods employed to control water flow, especially in agricultural fields and construction sites. Trenching involves the creation of narrow and deep excavations, primarily used for laying utilities, drainage systems, or other underground infrastructure. These trenches, often deeper than they are wide, require careful design and adherence to safety protocols to prevent cave-ins and ensure worker safety.
Diversion structures, such as ditches, channels, or small dams, are designed to redirect the flow of water away from vulnerable areas. They help manage surface runoff, reduce erosion, and provide controlled irrigation. In construction settings, these systems protect worksites and foundations from water damage, while in agriculture, they optimize water usage and prevent soil degradation. Together, these techniques play a vital role in water management and land preservation.
PURPOSE AND UTILITY OF TRENCHES
Trenching serves a wide range of purposes in civil engineering and construction projects. It is commonly used for installing essential underground infrastructure such as water pipes, electrical cables, sewage systems, and telephone lines. In residential settings, trenching is frequently employed for tasks like laying irrigation systems, connecting plumbing lines, installing electrical cables, and placing pipes for heating systems.
At the municipal or city level, trenching plays a critical role in establishing and maintaining public utility networks. It enables the installation of extensive drainage systems, sewer pipelines, and city-wide electrical and communication lines. Proper trenching ensures the safe and efficient placement of these utilities while minimizing surface disruption and ensuring long-term functionality

Introduction

Time Series Analysis (TSA)

TSA is a crucial tool in the study of climate change, as it allows researchers to carefully examine patterns and changes in weather parameters over time. By analyzing time series data for temperature, precipitation, and other weather variables, scientists can identify trends and develop models that accurately describe the underlying structure of the series. These models can then be used to make predictions about future changes in weather patterns and the potential impacts of climate change on the environment and human society. The accurate forecasting of climate change using TSA can inform policy decisions and facilitate adaptation strategies to mitigate the effects of a changing climate.

Components of Time Series

When analyzing a time series, we often want to separate the different components that contribute to its overall behavior. The classical decomposition method is a widely used technique that breaks down a time series into four components: trend, seasonal, cyclical, and irregular.

Abstract

Climate variability/change is one of the very significant concerns discussed in the recent two decades. Its impact on air temperature and precipitation has received massive attention worldwide as they affect both the spatial and temporal patterns of water availability. Hence, it is becoming clearer that analysis of trends in air temperature and rainfall is significant in studying the impacts of climate variability/change for water resources planning and management. Therefore, the aim of the study was to detect theannual, seasonal and monthly trends in air temperature and rainfall in the Râmgangâ river basin. Daily air temperature (Bareilly and Moradabad) and rainfall data (Shahajahanpur, Bareilly, Bareilly BPO and Moradabad)of 40 years (1971 to 2010) were used for the study. Non-parametric Mann-Kendall test and theTheil-Sen’s Slope Estimator was used for determination of estimating the trend and magnitude of the trend. Findings revealed that the basin is experiencing a warming trend because of the rise in themaximum and minimum air temperature. In case of rainfall, Moradabad showna significant high positive trend during the monsoon season. This would alter the river run-off in long run if the existing trend continues to persist like this.

Keywords: Climate change/Variability, Mann-Kendall test, Theil-Sen’s Slope estimator, Water resource planning

Abstract
India’s agriculture sector plays a critical role in economic development, offering employment to a significant rural population and contributing notably to GDP. Despite limited natural resources, India is among the world’s top producers of various crops and livestock. However, post-harvest losses, infrastructure gaps, and limited value addition hamper its full export potential. In recent years, agricultural exports have surge, with rice, spices, sugar, buffalo meat, and marine products emerging as key contributor. India has also expanded its export footprints across major global markets, including the USA, China, Bangladesh, and the UAE. Recognizing the strategic importance of agri-exports for economic growth, employment generation, and rural development, the government has launched initiatives such as the Agriculture Export Policy (AEP), Agri Export Zones (AEZs), and Market Access Initiatives (MAI). These measures aim to boost market access, infrastructure, and competitiveness. The integration of e-NAM, focus on quality standards, branding through Geographical Indications (GI), and establishment of Agri-Cells in key countries further support India’s goal of becoming a global agriexport powerhouse. This work underscores the importance of a coherent export strategy to enhance farmer income, promote sustainable practices, and position India as a key player in the global agricultural value chain.
Keywords: Agri-Export Policy (AEP), Agricultural Export Trends, Market Access and Diversification, Value addition and Processing

Introduction

Production system under arid and semi-arid region faces several biophysical constraints (high solar radiation, low and erratic rainfall, high wind velocity, poor soil conditions, etc.). Availability of irrigation water and irrigation potential in these regions are meager. Nutrition, food security and sufficient livelihood options based on agriculture are the major challenges of the people living in these regions. Sustainable productivity in these regions cannot be achieved by monoculture of either seasonal or forage crops, and thus hinges the need for diversifying the cropping pattern through fruit based cropping system which has good potential particularly in the arid and semi-arid regions. Because hunger and malnutrition are often linked to poverty, providing economic opportunities through horticultural production not only helps family incomes, but also addresses food security and nutrition. Thus, cropping system approach for agricultural production has greater significance in these regions.

Introduction
India possesses wide range of climatic and physio-geographical conditions, which are favourable for the production of various kinds of horticultural crops such as fruits, vegetables, flowers, nuts, spices, plantation crops (coco nut, cashew nut and cocoa) etc. The production of fruits and vegetables (F&Vs) in India is 81.2 million tonnes and 162.2 million tonnes from an area of 6.9 million hectares and 9.2 million hectares respectively during 2012-13 (NHB, 2013).  India is the second largest producer of F&Vs in the world after China. India’s share in the world production of F&Vs is 11.84 per cent and 13.36 per cent respectively (Lagzi, 2013). The importance of horticultural sector can be gauged from the fact that the contribution of horticulture sector in agricultural gross domestic product (agri-GDP) stands at around 30 per cent (Economic Survey, 2013-14).

Abstract
India’s grape industry has emerged as a key contributor to horticultural exports, driven by increasing production, evolving market strategies, and trade liberalization. This chapter analyses the trends, growth, instability, and export potential of both fresh (HS 080610) and dried grapes (HS 080620) from India between 2004 and 2023. While, India ranks among the top global producers, the fresh grape segment has seen consistent growth in exports, supported by initiatives like APEDA’s GrapeNet traceability system and private-sector innovation through companies like Sahyadri Farms and Mahindra Agri. In contrast, the dried grape segment, despite high growth potential, has faced volatility and continues to show a trade deficit. Using compound growth rates (CGR) and the Cuddy-Della Valle Index (CDVI), the study evaluates performance across production, trade value, and instability metrics. Exports potential maps highlight untapped markets such as the United States, EU, and Southeast Asia. Strengthening post-harvest infrastructure, ensuring compliance with international quality standard, and investing in value addition remain critical for India to enhance its global competitiveness in grape exports.
Keyword: Fresh grapes, Dried grapes, Export Potential, GrapeNet, Growth and instability

India’s livestock sector is one of the largest in the world and dairy farming is the single largest contributor to country’s GDP, apart from being the biggest source of employment. India has 56.7 per cent of world’s buffaloes. Buffalo genetic resource greatly helps the countries to assess their strengths and potential to harness the nature’s gift and India is fortunate in terms of having largest buffalo population, huge buffalo germplasm diversity (13 recognized plus 14 distinct population groups) and the world renowned buffalo breeds: Murrah, Banni, Jaffrabadi and Nili-Ravi.

Introduction Consumer demands for convenience and mildly processed meals with long shelf lives have led to unique and current developments in food packaging solutions (Dobrucka and Cierpiszewski, 2014). Additionally, the development of unique and creative packaging solutions that do not compromise food safety or quality is being fueled by the current retail trend and changing lifestyles (Dainelli et al., 2008). The widespread use of packaged meals has raised consumer demand for prepared foods like microwaveable dinners, and the growing popularity of smaller food packages all help to fuel the food industry's explosive growth in creative packaging (Restuccia et al., 2010). The rise in food-borne microbial outbreaks, which calls for the usage of packaging that possesses antimicrobial qualities while retaining food quality, is another major driver of new food packaging (Appendini and Hotchtkiss, 2002). The initial advancements in packaging were electrically powered packing equipment, flexible packaging, metallic cans, aseptic packaging, aluminium foils, and flexographic printing. A considerable movement away from metal, paperboard, and glass packaging in favour of plastic and flexible packaging was also brought about by the discovery of various materials such as polyester, polypropylene, and ethylene vinyl alcohol polymers.

Introduction

The food processing industry is a sunrise sector and contributes around 14% of Gross Domestic Product, 13% of India’s exports and 6% of total industrial investment. The Indian food retail market is expected to reach Rs 61 lakh crore by 2020 and the food processing industry accounts for 32% of the country’s total food market. This is considered as one of the largest industries in India and is ranked fifth in terms of production, consumption, export and expected growth.

The drift towards urbanisation and busier way of life, pave path to tremendous bounce in the food market. Nowadays consumer’s approach to being fit is not about going to gym, but also consulting dietitians and adopting an adjusted eating routine. Consumer’s behaviour concerning food consumption has undergone significant changes as a result of the increased awareness about different value added food products, brands, and cuisines, and also their greater willingness to experiment and ability to pay. It leads to the concept of food security in to nutritional security. Companies are offering a wider range of products to the consumers as a result of their investments into product innovation, research and development. At present, various value added products with versatile colour, shape, ingredients etc are available in worldwide market. Among this, some food items like processed fruits and vegetables and dairy products have witnessed a momentous growth in export also. Recent surveys indicated that for companies manufacturing processed foods and beverages, rise in the obesity rate is a great challenge. Hence, efforts were made to develop commercially viable, new process protocols to design healthy products from underutilised food commodities.

Food Safety

The term “safe food” has different standards to different consumers rather than just being the food handled and prepared through proper cleaning, washing and cooking. Safe food means food prepared on clean and sanitized surfaces with equipment, utensils and dishes that also are cleaned and sanitized. Nowadays consumers are extra conscious about the safety and quality of food and for that reason food safety issues have changed, so have society’s methods for making food as safe as possible. Accordingly, “food safety” means assurance that food is acceptable for human consumption according to its intended use (FSSAI 2017).

Abstract

In afforestation and reforestation programs, seed has become a valuable commodity and its collection, identification, handling, processing, testing, storage and certification requires prudent planning. The research and development in seed science and technology have made significant progress in recent years. The quality of seed has been the subject of increasing interest among Forest Managers and the Scientists. Not every seed is suitable for sowing. Sometimes, the seeds do not develop into normal plants or the plants produced do not produce the expected harvest. This manuscript reviews, the progress made to-date in the forest tree seed germination and highlights future line of action.

Introduction

The term geographic information systems (GIS) has come to mean, variously, an industry, a product, a technology, and a science. As such, the term invokes different perceptions dependent on whether the viewpoint is that of the software developer, the system marketer, the data provider, the application specialist, or the academic researcher, among others. A newcomer to the field is likely to be bewildered by the multiple uses of the same term, or, seen alternatively, different definitions of the same term. For instance some find it distasteful to use of the conventional acronym GIS and prefer Geospatial Technology. With all the variety of perceptions predicting the future of GIS is a cumbersome business. The most certain inference we can gain from the available trends is, it is growing and is poised for further growth. Geotechnology along with Nanotechnology and Biotechnology is considered as of the three most promising growth industries for the near future.

Introduction

The protected cultivation aims to create a favorable environment for harnessing maximum potential even in adverse climatic conditions. Farmers in India are facing different challenges including small and fragmented land holdings, climate change, vagaries of weather, poor soil health and lack of knowledge and exposure to modern agricultural technologies. The protected cultivation farming is emerging as one of the better alternatives in agriculture and gaining foothold in India. However, for successful protected cultivation farming, one needs to understand the protected cultivation structures, climate control, production technologies, plant protection, water management, marketing, guidelines and policies. At present, various innovations are adopted under the greenhouse technology viz., Soil based cultivation and soil less cultivation. Soil less cultivation consist of solid media based and liquid media based. Solid media include coco-peat, vermiculite, perlite, rice husk, sawdust, mass grass, wheat - paddy straw, sand, gravels, rock wool etc. whereas liquid based media include hydroponic, aeroponic and aquaponics cultivation.

Previous Year Questions

1. Discuss the strengths and weaknesses of Public Food Distribution system in India. (8M, IFoS-2022)

2. Describe the vicious cycle of poverty and enlist the existing policy instruments for combating malnutrition. (20M, CSE 2022)

3. Enlist and explain the efforts of the GOI in streamlining the current levels of poverty (10 marks, CS 2022)

4. Enlist and explain the salient features of Public Distribution System as per the provisions of the National Food Security Act, 2013. (10M, CSE 2022)

5. Discuss the strengths and weaknesses of public food-grain distribution system in India. (8M, IFoS 2020)