eChapters

Efficient horticultural production depends greatly on appropriate tools, implements, and timely cultural operations. This chapter introduces the major equipment used for land preparation, planting, weeding, pruning, propagation, irrigation, harvesting, and routine crop management. It emphasizes correct tool selection according to crop, operation, plant structure, and working conditions. Digging tools, secateurs, loppers, pruning saws, grafting knives, and other specialized implements are discussed along with principles of maintenance, sharpening, sterilization, and safe handling. The chapter also explains important cultural operations that influence crop establishment and productivity. Proper use of tools improves precision, reduces labour, prevents plant injury, and increases operational efficiency in horticultural systems.

Measurements of sugars in the fruit can indicate the stage of maturity. Total soluble solid (TSS) contents can give a reliable measure of the sugar and other water-soluble components in fruits, vegetables, and their products such as juice, squash, jam, preserve, candy, sauce, ketchup, etc., In climacteric fruits, carbohydrates accumulate during maturation in the form of starch, and as the fruit ripens the starch is broken down into sugar. In non-climacteric fruits, sugar tends to accumulate during maturation. The presence of sugars, acid, ascorbic acid, and other water-soluble components in the fruit, vegetable, and their products are measured as total soluble solids.
Principle
Soluble solids can be determined using a refractometer which measures the refractive index or a brix hydrometer which measures specific gravity. A Brix hydrometer is used to determine the percentage of brix in syrup while an Abbe refractometer gives both refractive index as well as degree brix. The Refractive index of the test solution is measured at 20°C using a refractometer and the soluble solid content is calculated by the use of tables correlating the refractive index with soluble solids.

1. INTRODUCTION

Food is any substance consumed to provide nutritional support for the body. It is usually of plant or animal origin, and contains essential nutrients, such as carbohydrates, fats, proteins, vitamins, or minerals. The substance is ingested by an organism and assimilated by the organism’s cells in an effort to produce energy, maintain life, or stimulate growth. A food contains some non-nutrients, some of which may even have a detrimental influence on the consumers, while some may be inert and have no effect. Nature has endowed many plants with the capacity to synthesize a wide variety of chemical substances that are known to exert a deleterious effect when ingested by animals and are called as antimetabolites. These substances are also referred to as antinutritional factors when they are present in food/feedstuffs and influence a metabolic pathway when introduced into and/or eaten by an organism.

There is a wide distribution of biologically-active constituents throughout the plant kingdom, particularly in plants, used as animal feed stuff and as human food. The knowledge that these compounds elicit both toxic and advantageous biological responses has given rise to several investigations in recent times as to their possible physiological implications in various biological systems. It is well known that plants generally, contain antinutrients acquired from fertilizer and pesticides and several naturally-occurring chemicals. Some of these chemicals are known as ‘‘secondary metabolites’’ and they have been shown to be highly biologically active. They include saponins, tannins, flavonoids, alkaloids, trypsin (protease) inhibitors, oxalates, phytates, haemagluttinins (lectins), cyanogenic glycosides, cardiac glycosides, coumarins and gossypol and the list is inexhaustible. Some of these plant chemicals have been shown to be deleterious to health or evidently dis-advantageous to human and animal health, if consumed in appropriate amounts. Most of these secondary metabolites elicit very harmful biological responses, while others are widely applied in nutrition and as pharmacologically-active agents. The pharmacological and other beneficial effects of these antinutritional factors in plants have been reviewed here.

Floriculture is increasingly regarded as a viable diversification from traditional field crops due to increased per unit returns and increasing habit of “saying it with flowers” during all the occasions. All over the world, the floriculture sector is experiencing rapid changes. Opening up to the world market in the WTO regime paving way to free movement of floricultural products world wide, globalization and its effect on income generation have all contributed to increase in per capita consumption of flowers in most countries. Noticeable feature of global floriculture is the development and expansion of floriculture in non traditional areas. Netherlands, Italy, Germany, and Japan had strong tradition for growing and consumption of flowers. The concept of commercial floriculture was perpetuated across the world from those regions. Now production centers are developing in Latin America, Africa and also in Asia to meet the demand of consuming countries and also to expand domestic market, commensurate with improved economic conditions, These countries provide highly qualitative floricultural products with low cost price which is finding a favourable place in markets of Western Europe, America and Japan. Emergence of new production centers has made floriculture more competitive and this in turn is benefiting the ultimate consumers.

Of the total land area of the world, arid zones account for 18.8%. Throughout the arid zones, there is no dearth of problems, but rapidly increasing desertification (some call it land degradation) is a problem of worldwide dimension. Water is a scare commodity in arid zones. Much of rainfall is lost by evapo-transpiration and as a result, ground water recharged only by seepage through soil profile. However, it is a common phenomenon in arid zones of the worlds that ground water is frequently used at the rate that exceeds recharge. The situation in arid tropics of India, which is spread over an area of 31.7 million ha, is no more different.

Agriculture is the human enterprise that is most vulnerable to climate change. Tropical agriculture including agriculture in arid tropics, particularly subsistence agriculture is vulnerable, as farmers do not have adequate resources to adapt to climate change. Land-use options that increase livelihood security and reduce vulnerability to climate and environmental change are necessary. Rural folk in arid western Rajasthan, the principal hot arid region of the country have been practising arable cropping in association with these scattered trees on crop fields since time immemorial. This combined protective-productive system of integration of trees into farming system rooted in the principles of ecology, productivity, economics and sustainability, is generally referred as agroforestry. In fragile ecosystems of hot arid regions of India

1. INTRODUCTION

Food fermentation is the oldest method of food preservation and have originated several million years ago. It plays an important role in ensuring the food security of millions of people around the world particularly marginalized and vulnerable groups. It is relatively efficient, low energy consuming process which needs no refrigeration or other energy intensive food preservation technologies but increases the shelf-life of foods. Fermentation ensures not only increased shelf-life and microbiological safety of food but may also make some foods more digestible and lower or eliminate the toxicity of substrate like cassava.

The food fermentation technology utilizes the ability of growth of microorganisms on various substrates for the production of a variety of fermented foods, beverages and pickles like bread, beer, cheese, idli, tempeh, miso, sauerkraut, fermented sausages, etc. Fermented foods are popular throughout the world since antiquity and in some regions these are the major component of the diet of millions of individuals. Indigenous fermented foods such as bread, cheese and wine have been prepared and consumed since ages and have occupied important place in culture, religion and tradition of people all over the world.

Traditional agricultural practices have been an integral part of food production in India since ages. These practices have the potential to mitigate the adverse effects of climate change with spatial and sequential diversity (Patel et al., 2020). Traditional Agriculture can be defined as a primitive style of farming that involves the intensive use of indigenous knowledge, traditional tools, natural resources, organic fertilizer and cultural beliefs of the farmers (Abeysekara et al., 2021). It is noteworthy that it is still used by about 50% of the world population. Traditional agriculture can be defined as a set of knowledge- practice-trust nexus which has developed by its adaptive nature and passes on to the next generation through a cultural transmission that explains the relationship between living beings with their environment (Berkes et al., 2000).

Soil is a loose surface material that provides water, nutrients, and structural support to agricultural plants. It is made up of 45% minerals, 5% organic components, 25% air, and 25% water. Our soils are said to be the source of 95% of the food we eat, either directly or indirectly.

The basis of the food chain is healthy soil. Our soils are the foundation of agriculture and the growing media for almost all plants that provide food. Good crops come from good soils, and healthy crops feed people and other animals. Food quantity and quality are, in fact, closely related to soil quality.

A healthy soil is a dynamic, living ecosystem. It is packed with both microscopic and larger organisms that carry out a multitude of essential tasks, such as nutrient cycling—the process of turning dead and decaying matter and minerals into plant nutrients controlling plant diseases and insect and weed pests, enhancing soil structure, which has a positive impact on the soil's ability to hold water and nutrients, and ultimately increasing crop productivity. Because healthy soil retains or increases its carbon content, it also helps to mitigate climate change.

Horticultural plants are grown for their diversified produce like fruits, vegetables, flowers, aromatic (essential oils) or medicinal components, spices (oleoresins), etc. if these plants are allowed to grow naturally, they will grow wild with very less potential yield. Therefore, it is essential to train and prune these plants not only to develop the proper framework in manageable shape but also to improve the potential yield in terms of quality and quantity.

Once the sapling is planted, it is essential to maintain the proper framework by cutting certain branches as well as some parts of branches. In the initial period, it is essential to maintain well distribution of flower or fruit bearing parts growing in four directions. Once the plant achieves proper framework after a certain period; then also some of the plant parts, namely branches or certain portions of branches, are removed to achieve potential yield.

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.

The following special terms are used in grape cultivation:

1. Training: Consists chiefly in giving a shape to the vine to the various forms of support.
2. Pruning: Consists in removing canes, shoots, leaves diseased, unproductive and other vegetative parts of the vine.
3. Thinning: Thinning is the removal of flower cluster, immature fruit cluster or parts of cluster.
4. Shoots: Shoots are the current season’s top vegetative (succulent) growth arising from a bud after pruning.
5. Canes: Canes are the woody matured shoots.

Horticultural plants are grown for their produce like fruit, vegetable, flower, medicinal component, spices etc. Therefore, these plants should be managed in such a way that human desires for the purpose of growing them are fully satisfied in terms of quality and quantity of produce. This demands direct manipulation of plant growth itself or plant environment through various inputs. In manipulation of plant development, training and pruning are important for which our knowledge about plant development and its phenology has to be complete. These practices are important in fruit crops.

The fruit trees are grown for optimum production of quality fruits that fulfill our requirement. Therefore, proper care and management of trees is mandatory to manipulate plant growth and plant environment. Training and pruning are important operations that provide not only the proper framework to the tree but also the favourable environment leading to desired plant growth and reduction in disease and pest attack.

Training

It is a physical manipulation technique that provides proper shape, size and direction to the plant in initial stage of growth. The techniques like tying, fastening, staking, supporting over a trellis or pergola in a certain fashion or pruning of some parts are are followed.

Objectives

• To improve physical appearance and usefulness of plant by providing appropriate shape and size to the plant and maintaining proper root-shoot balance.
• To facilitate easy cultural operations including canopy management, inter-cropping, plant protection and harvesting.
• To develop strong scaffold branches with better crotch angles in all directions that are capable of bearing heavy crops over the years without breakage of limbs.
• To provide adequate sunlight and air to the centre of the tree.

Training

• Training is related to shape and size of the plant.
• In this process, removal of part of the plant to develop a proper shape.
• It develops strong frame work of tree, balance between vegetative and reproductive growth and facilitate interception of sunrays to each and every part of trees.

Methods of training

Central leader system

• Main stem of tree is allowed to grow continuously.
• First branch is allowed to grow 45–50 cm height from ground level and other branches are allowed to grow on main stem at a distance of 15–20 cm.
• The tree attained Robust shape
• It is not suitable for high altitude and hot arid areas.

Horticultral plants are grown for their produce like fruit, vegetable, flower, medicinal, aromatic, spices etc. Therefore, these plants should be managed in such a way that human desires for the purpose of growing them are fully satisfied in terms of quality and quantity of produce. This demands direct manipulation of plant growth itself or plant environment through various inputs. In manipulation of plant development, training and pruning are important for which our knowledge about plant development and its phenology has to be complete. These practices are important in fruit crops.

Training: Physical techniques that control the shape, size and direction of plant growth are 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.

The various systems of training the vines adopted in the vine-growing centres in India are as follows:

1. Head system
2. Bower system
3. Kniffin system
4. Overhead trellis

ABSTRACT

Chilli (Capsicum annuum L.) is a vegetable and spice crop of worldwide importance. Despite the fact that other closely related members of the Solanaceae family are easily transformed by genetic engineering, capsicum still remains recalcitrant to in vitro manipulation, due to lack of proper elongation of multiple shoot initials. An attempt has been made to standardize transformation protocol in two local cultivars of capsicum viz., Byadgi dabbi and Sankeshwar, using shoot tip explants.

The Shoot tip explants were co-cultivated (for 2 days) with Agrobacerium strain EHA105 harboring pBinBt3 plasmid having cry1AC gene and nptII marker linked to the CaMV 35S promoter and nos terminator. After co-cultivation shoot tips were transferred to MS medium containing 2mg/l IBA, 100mg/l kanamycin and 300mg/l cefotaxime. Survived plants were checked for the presence of transgene using cry1 AC and npt II specific primers. Expression of cry1AC gene in these plants was checked using DesiGen Xpresstrips.

Vegetables play an important role in human nutrition and health making them important in Indian agricultural economy. The productivity of vegetable crop is seriously affected by several biotic and abiotic stresses and makes the economic conditions of the Indian marginal farmers worst. Under Indian conditions, 25-40% of the total vegetable produce is going waste due to lack of post-harvest storage and processing facilities in the country. Conventional plant breeding methods have improved vegetable crop plants bringing together a wide array of genes responsible for novel productivity and quality traits. However, sometimes, genes needed for crop improvement are not available in the existing germplasm. In genetic engineering, individual genes affecting the traits of economic importance are introduced in commercial cultivars. It is a targeted approach to improve the crop plants, which attempts to avoid the transfer of large blocks of genetic material. It requires identification and cloning of desirable gene and its subsequent transfer in plant species for improvement. Transgenic technologies offer many scientific advantages in breeding for improved vegetable crop quality and performance. However, very few genetically engineered horticultural crops have been released to farmers. As of 2005, one thousand million acres of transgenic crops have been planted globally covering 40% of the United States land area out of which 75% of the area is devoted to cotton, 50% to corn and 85% to soybeans in the United States of America (ISAAA, 2006).

27.1 Introduction

Crop improvement depends on genetic variation present in nature or created by hybridization followed by segregation and recombination. Again, gene transfers are possible only from the lines and species that are sexually compatible with the concerned species. Interspecific gene transfers pose many problems, including the loss of F₁ hybrids during embryo development due to abortion of the endosperm in the developing hybrid seeds. Embryo rescue technique was developed to rescue such interspecific hybrid embryos, and it has been widely used for this purpose. It is to be mentioned that embryo rescue can be used only in such cases where sexual hybridization is successful in producing zygotes that begin to develop into embryos.

Besides, the technique of somatic hybridization by protoplast fusion was developed to enable gene transfer from the species that do not produce zygotes on hybridization. This method has been extensively used and some useful lines have been derived. But this method is limited to utilization of genes present in plant species. Again, the results of somatic hybridization are unpredictable since many somatic hybrids fail to regenerate complete plants and the transfer of specific genes or groups of genes depends entirely on chance.

The recombinant DNA technology (also called genetic engineering) has permitted the transfer of genes from any organism into any organism. Besides, chemically synthesized genes can be transferred and integrated into genomes of various organisms to enable the expression of these genes. A gene transferred into an organism by genetic engineering is called a transgene. 

Ethylene is a primary plant hormone involved in the senescence of plant tissues including flowers and leaves. In carnation, inhibition of the synthesis or action of ethylene delays the onset of senescence symptoms and lengthens the vase life of flowers. Leaves of cut chrysanthemum of some cultivars frequently become yellow, sometimes prior to onset of flower senescence, in response to exogenous ethylene. Generation of transgenic plants with suppressed production or action of ethylene is an excellent way to lengthen the longevity of these ornamental plants. This paper reviews our studies on generation and characterization of carnations with reduced ethylene production and chrysanthemum with reduced sensitivity to ethylene.

Ethylene is a primary plant hormone involved in the senescence of cut flowers of many ornamentals such as carnation, sweetpea and delphinium. It is produced on a large amount at a later stage of flower senescence. The increased ethylene production accelerates withering and dropping of petals. Inhibition of synthesis or action of ethylene delays the onset of senescence symptoms and extends the vase life of flowers.