eChapters

Family: Commelinaceae

Flowering: August-September

Fruiting: September-October

Botanical description: The plant is a small diffused or straggling herb. Stem usually with a line of pubescence. Leaves are linear, 3.7-7.5 cm long, acute or acuminate, glabrous with prominent midrib and acute-obtuse at apex. Flowers are blue in colour and very small. Capsules are oblong and 4.3 mm long. The capsule is having 2 seeds, 2.5 mm long, ellipsoid, cylindrical with white appendage at each end.

Family : Araceae

Flowering: The plants flowers in Late wet season (September-October)

Botanical description: The plant is a tuberous bulb, herbaceous plant growing about 3-5 ft in height. The plant has large leaves. The leaves are heart shapes, 2-3 ft long with a long stalk of about 3 ft height. The flowers are yellowish-white spathes and spadixes are frequently produced.

Ecology: It is commonly found in damp, shady places and also cultivated. The plant is widely distributed throughout the hotter parts of India.

Family: Cleomaceae

Flowering: May-July

Fruiting: August-October

Botanical description: The plant is a tall annual herb growing up to a meter high, more or less hairy with glandular hairs. The leaves are compound, with 3-5 leaflets. Leaflets are obovate, elliptic-oblong, very variable in size. Flowers are yellow in colour, 10-15 mm across with 6-20 mm long pedicels. Fruits are 30-75 mm long, 3-5 mm broad, linear-oblong, erect, with tapering at both ends. Seeds many, 1.25mm across with dark brown colour.

Family: Cleomaceae

Flowering: July-October

Fruiting: December-February

Botanical description: The plant is an erect herbaceous annual herb growing up to 1.5 m in height. Leaves are alternately arranged and stalked. Each leaf has 3-7 leaflets, which are pinnately dissected and stalkless. Inflorescence is quite showy, and is usually up to 30 cm in length. The flowers have long stalks, ovate or elliptic petals either purplish or white in colour. The fruit is a long-stalked, dry, spindle-shaped capsule. Seeds are many, 1.5 mm across, with a shallow and narrow cleft.

Family: Lauraceae

Flowering: January Fruiting: February

Botanical description: The plant is a moderate sized tree growing up to 10-20 metres. Leaves are mostely oblong, usually 10-12.5 cm long, acuminate or acute, glabrous with shining above and acute base. The flowers are 5-6 mm long with pubescent pedicel. The tepals are pubescent, deciduous in fruits.

Ecology: The plant is occasionally planted and commonly cultivated as vegetable in the tropical countries including India.

Use: Leaves are used in different curries and recipes for special aroma.

Family: Fabaceae

Flowering: December-February

Fruiting: February-April

Botanical description: The plant is an annual herb, much branched and viscous hairy. The plant grows up to 20-50 cm high and has small feathery leaves on either side of the stem. The flowers are bluish purple in colour, 6-7 mm long on slender peduncles. Pods oblong, one seedpod contains two or three peas.

Family: Chenopodiaceae

Flowering: November-January Fruiting: February-April

Botanical description: The plant is a fast-growing, upright and weedy annual herb. The leaves are variables in appearance. The first leaves, near the base of the plant, are toothed and 3-7 cm long and 3-6 cm broad. The leaves on the upper part of the flowering stems are entire and lanceolate-rhomboid with 1-5 cm long and 0.4-2 cm broad. The flowers of the plant are 1-1.2 mm across, in short axillary spikes and often forming a terminal thyrse. Seeds are black, depressed with an obscure horizontal keel.

Family: Apiaceae

Flowering: August-October

Fruiting: November-January

Botanical description: The plant is a small creeping herb with shovel shaped leaves emerging alternately in clusters at the stem nodes. The runners lie along the ground and the inch long leaves with their scalloped edges rise above on long reddish petioles. The insignificant greenish- to pinkish-white flowers are borne in dense umbels (clusters in which all the flower stalks arise from the same point) on separate stems in the summer. The seeds are pumpkin-shaped nutlets 0.1-0.2 cm long.

Ecology: It is commonly seen in shady, damp and wet places such as paddy fields and in grass thickets and distributed throughout India.

Use: Leaves and young shoots are collected, roasted then eaten

Family: Amaranthaceae

Flowering: August-October

Fruiting: November-January

Botanical description: The plant is a herb, growing up to 60-75cm height, erect, branching with oval or lanceo-shaped, with hundreds of tiny flowers packed in dense spikes of silver- white flowers which usually stand above the foliage. They are beautiful plants with soft, dense feathery spikes, produced in profusion. Leaves are lanceolate, linear, acute to acuminate tapering into slender petiole. Seeds are several, black in colour and shining.

Family: Brassicaseae

Flowering & Fruiting: August-March

Botanical description: The plant is having a short stem, enlarging into a spherical edible tuber. Basal cauline leaves are broadly ovate, not overlapping on globose stem, about 10-45 x 3-25 cm across with cuneate base.

Ecology: The plant is a herb, widely cultivated as vegetable in the tropical countries including India. The plant loves to grow in late winter season.

Family: Brassicaseae

Botanical description: The leaves of the plant is having stout nerves, densely congested into a subglobose or ellipsoid head which is edible.

Ecology: The plant is a herb, widely cultivated as vegetable in the tropical countries including India.

Use: Leaves are fried separately or with other vegetables, and then eaten

Nutritional Value: The plant is rich in vitamin B and minerals.The nutritional value of the plant is presented below. 100g of the plant leaves carries:

Family: Brassicaseae

Flowering: November-February Fruiting: February-March

Botanical description: The plant is a herb with white edible mass of abortive flowers aggregated on thick branches of the inflorescence.

Ecology: It is widely cultivated as vegetable in the tropical countries including India. The plant grows in winter season.

Use: Leaves are fried or made into curry and consumed. Inflorescence is used in various types of preparations.

Family: Brassicaceae

Flowering: September-November

Fruiting: December-February

Botanical description: The plant is an annual herb with stems reaching up to 1.5 m tall. Stems are erect, reddish-purple below, greenish-red above, hairless, arising from large thickened taproot up to 10 cm in diameter. Leaves are large alternately arranged and hairless, upper smaller. Lower leaves are up to 25 cm long, pinnately cut, with small prickles above and below. Flowers are yellow in colour, borne in racemes at the end of branches with 2 cm across. The pods are stout, 5-9 cm long bearing 30-80 seeds with whitish, yellow or brownish in colour.

Use: Leaves are fried with oil then eaten and also chopped leaves and stems are dried in shade, stored in an earthen pot for consumption.

Family: Nyctaginaceae

Flowering & Fruiting: Most parts of the year, mostly dry winter season

Botanical description: The plant is a prostrate herb with diffuse inflorescences. The stem of the plant is glabrous or minutely pubescent and often purplish. The leaves are in unequal pairs, broadly ovate with obtuse or rounded apex. Flowers are very small, purplish red to reddish pink or nearly white, bell-shaped beyond the constriction.

Ecology: It is a common weed found near dry and warm river valleys; along roadsides, near habitations, in and along cultivated fields and in open cleared patches in forests. It is distributed throughout India.

Family: Cucurbitaceae

Flowering: October-November

Fruiting: December-January

Botanical description: The plant is a annual climbing herb, having stems up to 6 metres long that scramble over the ground or climb on other plants, supporting themselves by means of tendrils. Leaves are roundish, kidney-shaped, base deeply heart-shaped. Upper surface is rough, lower surface shortly bristly, 5-7-lobed, with long and hairy stalk. Tendrils are slender and rarely simple. Flowers are yellow in colour, calyx tube 10-15 mm long with spreading petals ending in a short point. Fruits large, succulent, densely hairy when young, with a thick waxy deposit when mature.

Family: Caesalpiniaceae

Flowering: February-March

Fruiting: April-May

Botanical description: The plant is a moderate sized tree growing up to 20-40 ft tall and 10-20 ft wide with a spreading crown of briefly deciduous leaves which are 10-15 cm across and rounded with lobed ends and heart shaped bases. The leaves are shaped like a cow’s hoof. The flowers are white or purple in colour with one petal variegated yellow, 5-10 cm across and carried in clusters at the branch tips. The flowers often make their first appearance in late winter while the tree is bare of leaves. Seeds of the plant are sub-orbicular in shape.

Family: Caesalpiniaceae

Flowering: April-June

Fruiting: December-March

Botanical description: The plant is a climber growing up to 10-30 m long. The woody stem can get as thick as 20 cm. The spreading tout branches are covered with rusty fine hairs. The stout tendrils are coiling and occur in pairs. Large leaves are 10-45 cm, 2-lobed with a broad cut. The flowers are white, 2-3 cm across, turn yellow when old and borne in rounded clusters. Fruit is a flat woody pod with fine rusty hairs, 20-30 cm long.

Family: Caesalpiniaceae

Flowering: September-February

Fruiting: February-March

Botanical description: The plant is a moderate sized tree with ashy or dark brown bark. Leaves are often oblong, about 5-18cm, deeply lobed from one third way down to nearly the base with scarcely overlapping. Flowers are purple and large on terminal panicled racemes. Pods are 15-30×18-25 cm long, narrow below, somewhat broadening upwards.

Family: Basillaceae

Flowering: May-September

Fruiting: October-February

Botanical description: The plant is a twining succulent herb with green stem and petioles. Leaves of the plant are broadly ovate and green to purplish in colour. Flowers are pinkish or purple in colour. Fruits are berries, ovoid or depressed-globose, turns black after ripening with deep purple juice.

Family: Poaceae

Flowering & Fruiting: The plant flowers after about 90-100 years. Flowering and fruting occurs in wet season

Botanical description: The plant is a perennial tree growing up to 20-53 m in height and 8-18 cm in diameter. There are 1-3 spines at each branch node. Leaves are thin, linear, up to 20 cm long, 1-1.8 cm wide with a long pointed tip. The branches of the plant spread out from the base and areal roots reaching up to nodes. The length of the internodes is about 15-46 cm and is hollow.

Ecology: It is cultivated and naturalized throughout India. Plant loves to grow in moist soils.

Family: Meliaceae

Flowering: February-May

Fruiting: June-July

Botanical description: The plant is a tree. The leaf of the plant is about 20-38 cm in length, leaflets 5-9 pairs and obliquely lanceolate. Flower is white in colour and fragrant. The plant bark, leaves and flowers are bitter in taste.

Family: Araceae

Flowering: July-August

Fruiting: November

Botanical description: The plant is a herb, growing about 90 cm in height. It produces 2 - 3 leaves, 5 - 30cm or more in size with a flowering stem 30 - 50cm long. Leaflets are lanceolate, acuminate and oblique, uniting in an intramarginal nerve. Fruiting head 5 cm long, ovoid, berries are initially green clustered fruits finally ripening to bright red.

Family: Acanthaceae

Flowering: September-December

Fruiting: January-April

Botanical description: The plant is an erect annual herb extremely bitter in taste (all parts of the plant). It grows erect to a height of 1-4 ft. with dark stem. The leaves are glabrous, lanceolate, pinnate, with 8.0 cm long and 2.5 cm broad. Flowers of the plant are small, white-purple or spotted purple in colour, spreading axillary and terminal racemes or panicles and acute at both ends. Seeds numerous, sub quadrate and yellowish brown in colour.

Family: Amaranthaceae

Flowering: Throughout the year

Fruiting: Throughout the year

Botanical description: The plant is an annual herb with erect stems growing upto 10-80 cm in height. The leaves are triangular-ovate to narrowly rhombic, 2-7 cm long, 1.5-5.5 cm wide, hairless, with a narrow and small narrow notch. The flowers of the plant are green, in slender, paniculate spikes, in leaf axils or at the end of branches. Fruit is nearly round, about 1.3-1.5 mm in size.

Ecology: The plant is a fairly common weed on waste ground and roadsides and distributed throughout India. The plant is also cultivated during summer season.

Use: Leaves and young shoots are collected, roasted and eaten

Family: Amaranthaceae

Flowering: June-August

Fruiting: September-December

Botanical descripion: The plant is an erect tropical annual herb with long-stalked leaves, growing up to 5 ft tall. The leaves grow up to 5 inch long, are notched or rounded at the tips. The flowers are whitish-green or red white, the seeds are very small, shining, black or red- brown in colour.

Family: Amaranthaceae

Flowering: June-August

Fruiting: September-December

Botanical description: The plant is an annual herb with sometimes red tinged erect stems, sometimes ascending, 30-150 cm long, usually branched. The leaves are ovate to rhombic- ovate, elliptic, lanceolate-oblong, or lanceolate, blades 1-12 cm long, 0.89-6 cm wide and smooth. The stem and its branches carry spines. Flowers of the plant are green, and are in axillary clusters in the lower part of the plant and in unbranched or branched spikes in the upper part. The lower clusters are entirely without stamens as the lower flowers of the spikes, the upper flowers in the spikes are staminate. Seeds are dark brown or black in colour.

Family: Amaranthaceae

Flowering: June-August

Fruiting: September-November

Botanical description: The plant is an annual erect herb that grows upto 1 meter in height. The stem is grooved and often redish. The leaves are long-petioled, ovate or elliptic, acute or subacute with base shortly cuneate to attenuate. The flowers are in axillary and terminal red or green panicled spikes with up to 20 cm long. Seeds are black in colour, shining and compressed or subspherical with thick margin.

Ecology: The plant being commonly used as leafy vegetables, is cultivated throughout the country. The plant loves to grow in soil rich with organic materials. The plant is commonly cultivated in summer and it grows luxuriantly in rainy season.

Family: Amaranthaceae

Flowering: November-December

Fruiting: January-March

Botanical description: The plant is a herb, reaches heights of over 1 meter tall with fleshy oval shaped leaves that are sometimes pointed at the tips. It is having a deep maroon colour in the center of the leaf with streaks of red, purple and green. The plant produces feathery purple, magenta or red flowers from the central stalk which is packed with edible seeds. The flower buds are edible, once they mature and become bushy.

Ecology: The plant is commonly used as leafy vegetables and cultivated throughout the country. The plant loves to grow in the sandy soil in winter season. It is also cultivated in left over potato fields.

Use: Leaves and young shoots are cut into small pieces, cooked with salt and chilly and then eaten. Sometimes the leaves and shoots are mixed with vegetables in cooking.

Family : Amaranthaceae

Flowering: Most part of the year

Fruiting: Year round

Botanical description: The plant is an evergreen creeper, herbaceous and perennial, growing up to 15 – 30 cm in height and spreading to form a growth mat about 45cm wide or more. Stems are prostrate or erect and moderately branched, hairless below, generally hairy above and in leaf-axils. The leaves are inverted-lanceolate or narrowly elliptic, acute at apex, narrowed at the base into a poorly defined petiole, mostly 2-6 cm long and 0.6-2.0 cm wide. Round or short-cylindrical flower heads lie stalkless in leaf axils, 5-10 mm long and 5-7 mm wide.

Use: Young leaves and shoots are collected, fried and eaten as green vegetables

Family: Amaranthaceae

Flowering: July-October

Fruiting: November-January

Botanical description: The plant is a perennial herb. The plant is a much branched prostrate herb, branches often purplish, frequently rooting at the lower nodes. The leaves are simple, opposite, somewhat fleshy, lanceolate, obtuse or subacute, glabrous and shortly petiolate. The flowers of the plant are small, white and in axillary clusters. Fruits are compressed obcordate utricles, with suborbicular seeds.

English Name: Node Flower Allmaina

Family: Amaranthaceae

Flowering: May-June

Fruiting: June-July

Botanical description: The plant is an annual herb. It is erect and rising, 10-50 cm tall. Stem is branched from or near the base. The Leaves are obovate, oblong, or linear with 1.5-6.5 mm long and 0.3-2.5 cm wide. Flowers of the plant are greenish or orange-red in colour with 3-7-flowered cymes. Seeds are single, black and shining with 1.5-2 mm in diam.

Ecology: The plant is a common weed widely distributed in forests and cultivated lands.

Family : Amaryllidaceae

Flowering: November-December

Fruiting: January-February

Botanical description: The plant is a herb. The leaves of the plants are flat, linear with sheaths, about half of their length. Flower of the plant is white or greenish white with a short pedicel. The plant is having bulbs with membranous outer scales in the axils of which do exist 10-12 lesser bulbs.

Family : Amaryllidaceae

Flowering: December-January

Fruiting: January-February

Botanical description: It is a herb. The leaves of the plants are cylindric, fistular and look like tubes. Flower of the plant is white or greenish white with a short pedicel.

Ecology: The plant is commonly cultivated along the river banks during winter season. The plant loves to grow in sandy and loamy soil.

Use: Young leaves and shoots are collected, fried then eaten. The leaves and the flowering stalks are used for various preparations and curries.

Family : Amaranthaceae

Flowering: August-October

Fruiting: November-January

Botanical description: The plant is a perennial sub-erect, diffuse or prostrate herb, growing upto 0.3-2 meter high, branched from the base and often also from above. Stem and branches are densely woolly with whitish or yellowish, shaggy hairs. Leaves are alternately arranged, nearly circular to lanceo shaped-elliptic, wedge-shaped at the base, rounded to sharp at the tip. Flower spikes are stalkless, solitary or usually in clusters in leaf axils, silky white to creamy in colour, forming a long inflorescence leafy to the ultimate spikes.

Ecology: This plant is commonly found in open forests on mountain slopes, on waste and disturbed ground and coastal scrubs. The plant is widespread in drier parts of the tropics and subtropics.

Use: Leaves are collected, fried and then eaten

Family : Euphorbiaceae

Flowering: July-September

Fruiting: September-December

Botanical description: The plant is a small erect herb, growing up to 60 cm or more. The ascending branches are angled and velvet-hairy. Leaves are broadly ovate, nearly triangular, rather coarsely toothed. Leaf stalks are as long as or longer than the 3-5 cm long blades. Flowers are stalkless, borne on erect axillary spikes longer than the leaves. Male flowers are minute, crowded distally. Female flowers are scattered along the inflorescence axis, each subtended by a conspicuous semicupular leaf-like toothed green bract nearly 7 mm long. Capsule is bristly and1 mm broad.

Ecology: It is mostly found in hot, low to medium altitude, sandy margins of rivers, seasonal water courses and pans, usually in shade of thickets, on rocky hillsides and often in disturbed ground and as a weed of cultivation.

Family : Amaranthaceae

Flowering : October-December

Fruiting : December-January

Botanical description

The plant is an erect, straggling or subscandant herb. The leaves are ovate, elliptic, obtuse, acute and finely attached to the stem on both sides. The flowers are greenish white in colour, bracteolate having membranous blade and seeds are reddish brown in colour, sub-cylindric at apex and rounded at the base.

19.1 DEFINITION OF ORGANIC FARMING

1.According to IFOAM (International Federation of Organic Agriculture Movement), Organic Farming definition includes all agricultural system that promote the environmentally, socially and ecologically sound production system of food and fibres. IFOAM stresses and supports the development of self- supporting system on local and regional level.

2.As per the definition of the USDA study team on organic farming “organic farming is a system which avoids or largely excludes the use of synthetic inputs (such as fertilizers, pesticides, hormones, feed additives etc) and to the maximum extent feasible rely upon crop rotations, crop residues, animal manures, off-farm organic waste, mineral grade rock additives and biological system of nutrient mobilization and plant protection”.

3.In another definition FAO suggested that “Organic agriculture is a unique production management system which promotes and enhances agro-ecosystem health, including biodiversity, biological cycles and soil biological activity, and this is accomplished by using on-farm agronomic, biological and mechanical methods in exclusion of all synthetic off-farm inputs”.

18.1 INTRODUCTION

The decline in productivity of old and senile orchards existing in abundance has become a matter of serious concern for the orchardists, traders as well as scientists. In India 30-35% area under fruit crops is occupied by old, senile, and pest-and-disease- affected orchards. For overcoming the problem of unproductive and uneconomic orchards existing in abundance, large scale uprooting and replacement with new plantations will be a long term and expensive strategy. Thus, rejuvenation of old and senile orchards is a good alternative.

17.1 INTRODUCTION

Bearing habit indicates position of f lower bud with respect to vegetative growth of the plant after cessation of juvenility. Different fruit trees have different bearing habits. The knowledge of bearing habits will be of much importance for regulating the bearing of any plant by means of pruning. Terminal bearers are not normally pruned, whereas in case of lateral bearers pruning certainly increase the bearing, as it encourages the sprouting of lateral buds. Fruit trees may bear the fruits either terminally on a long or short growth, laterally on present or past season growth or adventitiously from any point on the trunk or root. The relative position of a fruit with reference to its potential bud giving rise to f lower or inf lorescence in the shoot is known as bearing habit. Knowledge on the bearing habit is a pre-requirement before performing pruning in any fruit crop (particularly in ber, guava, grape etc.). Proper understanding of bearing habits helps a lot in manipulating time and period of f lowering and fruiting which consequently inf luence harvesting and yield of better-quality fruits.

16.1 INTRODUCTION

Mulch, a technical term, means ‘covering of soil’. A mulch is a layer of material applied to the surface of soil. It may be applied to bare soil or around existing plants. Mulches of manure or compost will be incorporated naturally into the soil by the activity of worms and other organisms. Mulching is the process or practice of covering the soil/ground to make more favourable conditions for plant growth, development and efficient crop production. While natural mulches such as leaf, straw, dead leaves and compost have been used for centuries, during the last 60 years the advent of synthetic materials has altered the methods and benefits of mulching. The research as well as field data available on effect of synthetic mulches make a vast volume of useful literature. In this manner it plays a positive role in water conservation. The suppression of evaporation also has a supplementary effect; it prevents the rise of water containing salt, which is important in countries with high salt content water resources.

15.1 INTRODUCTION

Cropping system is defined as a cropping pattern followed on a farm and its interaction with farm resources, other farm enterprises and production technology. In other words, cropping system refers to a combination of crops in time and space. When annual crops are considered, a cropping system usually means the combination of crops within a given year (Willey et al., 1989). This cropping system might provide insurance against crop failure by reducing disease (Fininsa and Yuen, 2002) and insect incidence (Gahukar, 1989) or against unstable market prices by planting two or more crops under intercropping and thus, reducing the risk of unexpected changeable prices. Intercropping in scientific way should be viewed from a theme of competition to one of collaboration with mutually beneficial relation with proper planning to get more return from limited natural resources. Legumes have been the common intercrops in any intercropping system owing to their short duration, N-fixing ability etc. Even though non-leguminous vegetables require longer duration than legumes and are non-N-fixers, they can also be suitable as intercrops because of their high profitability and higher yields.

14.1 INTRODUCTION

India is conferred with a varied agro-climatic condition which are highly favourable for growing a large number of horticultural crops such as fruits, vegetables, root tubers, ornamental, aromatic plants, medicinal herbs, spices and plantation crops like coconut, areca nut, cashew and cocoa (Ministry of Information and Broadcasting, GOI, 2008). India is next only to China in area and production of vegetables and occupies prime position in the production of caulif lower, second in onion and third in cabbage in the world. After achieving food security, it is being increasingly felt that India needs to achieve nutritional security for betterment of its population. In achieving nutritional security fruits and vegetables play an important role (Ganeshmurthy et al.2011). Although we have achieved good production levels of fruits and vegetables, the present production of fruits and vegetables may not be enough to meet out the demand. To feed the ever-increasing population in a sustainable way a tremendous effort will have to be made to increase the production of fruits and vegetables both horizontally and vertically through a rational and balanced use of production inputs, specially the mineral fertilizers. Soil fertility is a key factor for successful crop production, and it is a measure of capacity of soil to supply plant nutrients. The importance of soil fertility and fertilizer management is being increasingly recognized in all countries recently to meet the demand for food and other agricultural raw materials. Intensive use of fertilizer, intensive cropping with high yielding cultivars have increased the food production and reduced the food shortage, but it has also brought in numerous problems of soil fertility, soil and water pollution. On the other hand, fast depletion of nutrients due to over exploitation, a wide-spread deficiency of N, P, K and S coupled with micro-nutrients deficiencies especially Zn and boron has been noticed in many soils. Further deforestation, shifting cultivation, burning of trees, bushes, grasses and cow dung, soil erosion, soil degradation, nutrient losses, excessive fertilizer application, leaching losses etc., have aggravated the depletion of soil fertility status. It is being realized that the future of Indian agriculture is closely related to scientific management of soil fertility along with judicious and efficient use of fertilizers. Soil fertility and nutrient management is one of the important factors that have a direct impact on crop yield and quality. Soil test reports help in determining soil organic matter, pH, electrical conductivity, cation exchange capacity, and levels of important macronutrients (phosphorus, potassium, calcium, magnesium) and micronutrients (boron, zinc, etc.). These reports also help estimating lime or sulphur application rates to increase or reduce soil pH, respectively. Maintaining a soil pH between 6.0 and 7.0 is recommended for most crop rotations that include vegetable crops.

13.1 INTRODUCTION

Weed is defined as an unwanted plant growing at a place where it is not desired. Weeds are unwanted and undeserved plants that interfere with the utilization of the land and water resources and thus adversely affect crop production and human welfare. Thus, a plant out of its place or a plant growing where it is not desired at that time is a weed. Weed has no species, but name was suggested as a useless and harmful plant that persistently grows where it is quite unwanted. According to Jethro Tull, the father of Weed Science, weed is defined as the unwanted, undesirable plant, growing out of their proper place, which interfere with the utilization of natural resources, prolific, persistent, competitive, harmful and even poisonous in nature and can grow in adverse climatic conditions. Of the total losses caused by pests, weeds have a major share (30%). They reduce the crop yield and decrease the quality of produce and hence reduce the market value of the turnout. Weeds are a major problem to horticultural production as they take advantage of their initial slow growth rate. Weeds reduce crop yield, lower their quality, act as alternate host of many pests/diseases and also have allelopathic effects on crops. Weeds also interfere with vital farm operations like weeding, fertilizer application, herbicide application and harvesting. Both annual and perennial weeds are common in their actions reducing the productivity of fruit trees. Weeds also provide shelter to various pathogens by becoming an alternate or collateral host of invaded crops by a number of fungal, bacterial and viral diseases.

The worst weeds found in the world are Cyperus rotundus, Cynodon dactylon, Echinochloa crusgalli, Echinochloa colona, Eleusine indica, Sorghum halepense, Imperata cylinderica, Eichhornia crassipes, Portulaca oleracia, Chenopodium album, Digitaria sanguinalis, Convolvulus arvensis, Avena fatua, Amaranthus hybridus, Amaranthus spinosus, Cyperus esculentus, Paspalum cojugatum, Rottboelia exaltata (Rana and Rana, 2016). All of these weeds are found in India. It has been reported that about 36-42% losses may occur due to inadequate management of weeds in apple (El- Metwally and Hafez, 2007). Therefore, management of weeds in all agro-ecosystems is crucial to sustain our crop productivity and to ensure the food security to the rapidly increasing population.

12.1 INTRODUCTION

Water is a factor of prime importance in agriculture industry. Water management is one of the largest and most important inputs into an orchard. An efficient water management refers to artificial application of water, i.e., irrigation in crop root zones in case of soil moisture deficit and removal of water, i.e., drainage from the root zone in case of excess so as to provide the crops a most optimum soil moisture regime for best production. It means how best we are in irrigating and dewatering our fields so that plants are protected from stress as well as water logging (Goswami, 2015). Water resources are continuously overburdened with excessive drafts and water sources are shrinking at faster rate. Groundwater levels are falling at the rates faster than ever. Under this type of circumstances, judicious use of water should be given due attention for water conservation and also in increasing water productivity. Area under horticultural plantations is increasing at exponential rate. The unproductive uplands and low productive midlands and lowlands are brought under fruit based horticultural plantations. For a profitable orchard enterprise, a well-planned irrigation system and efficient water management practice are of utmost importance. Horticultural sector, which includes vegetables, f lowers and fruits, has enormous potential for development owing to varying agro-climatic conditions in India. There is tremendous scope for increase in productivity and quality of horticultural crops, which is necessary to compete in this modern competitive world market. There are many production technologies available to increase the per unit vegetable production and also to increase its quality. One of the widely acceptable, reliable and cost- effective technologies is pressurized irrigation.

11.1 INTRODUCTION

Plant growth regulators have remained an important component in horticulture from time immemorial because they were effective means of quantitative as well as qualitative improvement in growth and development of crops. Plant Growth Regulators (PGR) are diverse group of organic compounds other than nutrients, produced artificially or by plants which in low concentrations promote, inhibit or modify the physiological process in plant. The term includes both naturally occurring phytohormones as well as synthetic compounds. These are produced naturally in higher plants, controlling growth or other physiological functions at a site remote from its place of production and active in minute amounts. Plant Growth Regulators are used in different forms like liquid, powder, paste etc. “Hormone” is Greek word derived from “hormao”, which means to stimulate. Thimone (1948) suggested the use of term ‘phytohormones’ as the organic substance, which are produced naturally in plants, synthesised in one Part And usually translocated to other part wherein every small quantity affects the growth and other physiological function of the plants. To distinguish them from the animal hormones they are termed as phytohormones. Auxin was the first hormone to be discovered in plants and at one time considered to be only naturally occurring plant growth hormone. The role of plant growth regulators in various physiological processes such as seed germination, f lowering, fruiting, seed development, fruit ripening and yield etc. in different crop plants is well established (Kiran et al., 2011). There are five classical phytohormones: auxins, gibberellins, cytokinins, ethylene and abscisic acid. Besides classical phytohormones a variety of other compounds that play roles in plant growth and development have also been identified, including jasmonic acid, salicylic acid, brassinosteroids and polyamines (Basra, 2000). The application of plant growth regulators in agriculture has started in 1930 in the United States. Ethylene, a naturally occurring substance, is one of the first plant growth regulators being discovered and used successfully for enhancing f lower production in pineapple (Fishel, 2006). Its toxic effects to human beings are low.

10.1 INTRODUCTION

Most botanists identify trees by their leaves, f lowers and fruit. However, the plant architecture specialist is interested in trunks, branches and twigs. All types of fruit tree do not require pruning, e.g., mango, sapota, while some fruit trees can grow well naturally, e.g., pineapple, papaya as they do not require pruning. Most deciduous trees like apple, pear, almond etc. and grapes, ber, fig, citrus, pomegranate, guava etc. require pruning to train them for desired shape.

10.2 TRAINING

Training is an operation by which the plant is made to develop an orderly structure or frame work. This is done by staking, tying, supporting, propping, trailing or spreading on certain structure with or without pruning of plant. Training is usually done when plants are young. Bending, twisting, decapitations are done by using springs of hard wire, where it is required. It is a physical technique which controls the shape, size and direction of plant growth known as training or in other words, training in effect is orientation of plant in space through techniques like tying, fastening, staking, supporting over a trellis or pergola in a certain fashion or pruning of some parts.

9.1 INTRODUCTION

Establishment of an orchard incurs long term investment for which it needs a very critical planning. As it is a long-term investment, plants planted in the orchard should suit to the prevailing climatic condition of that area. The land remains occupied as long as 40 to 50 years. Any mistake committed during initial year is hard to rectify later on. Proper layout of the orchard ensures optimum utilisation of land and resources for successive economic production. It becomes easy for different inter-cultural operations, harvesting and transportation of the produces. Uniform distribution of plants in the selected land in various systems of planting is done after proper layout.

9.2 LAYOUT

The proper layout of orchard aims at accommodating maximum number of trees per unit land area, maintaining adequate space for proper development of the trees and convenient orchard management practices.

8.1 INTRODUCTION

Orchard is a place or a piece of land where different kinds of fruit plants are planted in orderly manner and managed efficiently for production of successive yield to get assured economic return. An orchard being capital-intensive and long-term venture careful planning, layout, selection of site, preliminary operations etc. are to be done. It is easy to establish an orchard considering its features critically but difficult to manage afterwards. It needs high managerial skills and technically skilled manpower to carry out different orchard operations. Any lapses in management can lead to incur heavy loss.

7.1 INTRODUCTION

Gardening is a practice of growing different kinds of horticultural crops in a particular land area as a part of horticulture either for consumption or sale, export, beautification etc. Basing on the crops grown, gardens are named accordingly, e.g., for raising vegetables, it is vegetable gardens; for fruit crops, it is orchard; for plantation crops, it is estate plantation; for ornamental plants, it is gardening and landscape etc. The history of gardening is not new. In ancient time kings, emperors, rulers, sages were establishing different types of gardens for different purposes.

6.1 INTRODUCTION

The Climate and soil play important role in growth and development of the plant. Growers in general and fruit growers in particular should have adequate knowledge of the effect of various soil and climatic conditions on raising horticultural crops. Horticultural crops cannot be grown in all types of soil and climate. Hence zone- wise cultivation is made. Climate includes a number of parameters like temperature, rainfall, atmospheric humidity, wind, hail and light whereas soil covers factors like moisture content, texture, soil reaction, nutrient content, chemical composition and soil temperature.

6.2 SOIL

Soil is a thin outer covering of the earth surface. It is the natural resource directly developed by different natural forces acting on natural materials. Soil serves as a base and support for plant growth. It is a basic medium for plant growth and supplies nutrients for growing plants. Soil is the home of the plant root and the reservoir for essential nutrients and water for growth and development of crop plants.