eChapters

Introduction

Pomegranate (Punica granatum L.) is an important fruit crop in arid and semi arid regions. In India, it is grown commercially in Maharashtra, Gujarat, Karnataka, Andhra Pradesh, Telangana, Tamil Nadu, Madhya Pradesh, and Rajasthan. India is one of the largest producers of pomegranate in the world. During 2020–2021, pomegranate was cultivated over 2.71 lakh ha with an annual production of 30.88 lakh tonnes and a productivity of 11.39 tonnes/ ha in India. Maharashtra is the leading state, with 63% of the area and 62% of total production. In India, pomegranate is available throughout the year (January–December). India has the largest area of pomegranate cultivation globally.

Pomegranate can tolerate heat, drought, and moisture deficit. The area under pomegranate cultivation in India is increasing daily due to its high demand, hardy nature, low cost of cultivation, high yields, better storage quality, and therapeutic values. It has enormous medicinal and nutritional value and is one of the richest sources of antioxidants. Several processed products such as juices, squash, jelly, anardana, and mouth fresheners are prepared by fruit processing. The fruit is mainly used as an ingredient in cooling and refrigerant mixtures and in the preparation of juice, concentrates, condiments, and pastes. The juice is highly nutritious and is recommended for patients suffering from gastric troubles. It contains 16.5% TSS and 0.33% acidity; total sugars, 13.93; reducing sugars, 13.60 and non-reducing sugars, 0.33%; and 9.27 mg/100 g ascorbic acid.

India is the second-largest producer of fruits in the world after China. As per the National Horticulture Database (3rd Advance Estimate), the area under cultivation of fruits is 6.914 million hectares with a production of 103.027 million tonnes. Mango (34.71%) ranks 1st in the area, followed by citrus (15.42%), banana, and grapes (2.14%), standing in the 9th position. Likewise, Mango (22.4%) occupies the 2nd position in production, followed by Citrus (12.89%) and Grapes, sharing around 3%. Underutilized fruit crops, such as aonal, bael, ber, Jamun, and tamarind, and minor fruit crops like phalsa, karonda ker, salvadora, etc., are grown in drier tracts of the country, including the arid region. Some of the crops introduced as non-traditional crops have revolutionized the fruit industry in India. Although the total acreage of cultivation and production of fruit crops has accelerated annually, the productivity of fruit crops has been on a declining trend due to several factors impacted by abiotic stresses. Since plants’ first line of defense lies in the roots, the success or failure of orcharding enterprises depends upon rootstocks.

Introduction

Date palm (Phoenix dactylifera L.) is a monocotyledonous and dieocious species belonging to the family Palmae. The Latin name of the date palm, Phoenix dactylifera, is derived from the Phoenician name “Phoenix,” which means date palm, and dactylifera is derived from the Greek word “daktulos,” which means a finger. In India, generally, two species of Phoenix are found, of which, Phoenix sylvestris Roxb. called “desi khajoor,” is found throughout the country but t produces inferior quality fruits. The fruit contains large stones with less pulp content.

Date palm is considered one of the world’s oldest cultivated fruit trees. Archeological evidence suggests that the date palm was domesticated some 6000 years ago in the Mesopotamian region. It is widely cultivated in arid regions of the Middle East and North Africa. It is also one of the most appropriate fruit trees, and it can be easily grown under saline soil and water conditions. It grows well in poor, arid soils due to its hardy plant characteristics and deep root system. Date palm is believed to be indigenous to countries around the Persian Gulf. In the Indus Valley, date palm is believed to have been introduced by the soldiers of Alexander the Great in the fourth century B.C. and during the Muslim invasions at the beginning of the eight century AD. Date palm was commercially cultivated in Iraq, Saudi Arabia, Algeria, Iran, Egypt, Morocco, Tunisia, Pakistan, and Sudan, among many other Near East and North African countries. In India, dates are grown in the states of Gujarat, Rajasthan, Punjab, Haryana, and Tamil Nadu (Table 1).

Background

Water is the most precious input for dryland horticulture, and therefore, its use should be planned judiciously. Rainwater harvesting and its management play a significant role in horticultural production. The rainwater can be diverted either directly to tree basins in situ or in suitable structures ex situ, which can later be utilized as lifesaving irrigation. In sandy soils, in situ conservation should be popularized, while in heavier soils, ex-situ conservation should be popularized. The water thus collected remains stored deep into the soil profile, escapes from evaporative losses, and is available during critical periods of demand. Perennial fruit trees, once established, get the advantage of any time it rains during the year, unlike annual crops. Water harvesting in khadins in parts of the Jaisalmer district of Rajasthan and its use in raising crops and trees is the age-old practice of in situ water harvesting. The hilly, rocky, and sloppy lands generate runoff, which can be collected in ponds or tanks and recycled for the establishment of fruit plantations and lifesaving irrigation at critical stages. In the same stance, nutrient management also plays an important role in the successful cultivation of horticultural crops under dryland. The arid zone soils are very poor in the majority of nutrients except potash. Enrichment of soil with organic and inorganic sources is essential for optimum production of fruits and vegetables. The application of chemical fertilizers has made miracles initially in agriculture and horticulture. However, increasing awareness of environmental degradation due to various anthropogenic activities has been expressed worldwide about the over-reliance on mineral fertilizers, which causes environmental penalties. It has also led to a deficiency of several micronutrients. Therefore, the option left is whether to revert back to traditional farming using organic input or to follow some middle path by integrating both organic and inorganic. So far as present knowledge is concerned, organic manuring alone cannot maintain the required productivity and demand for food.

The Indian arid zone is one of the largest subtropical deserts in the world, of which 20% is arid and the rest is semi-arid. A hot arid zone is spread over 31.7 million ha and confined to Rajasthan, Gujarat, Andhra Pradesh, Punjab, and Haryana. The major part of the hot arid region of the country lies in western Rajasthan (19.62 million ha), followed by north-western Gujarat (2.16 million ha). It is characterized by a high aridity index, extremes of temperature, low and variable precipitation, very high wind velocity and dust storms, high soil pH, a high infiltration rate, and minimal availability of groundwater and saline ground irrigation water. Under such harsh climatic conditions, cultivating vegetable crops in open conditions results in meager and poor-quality yield, which fetches less return per unit area. By creating a suitable microclimate for plant growth throughout the year, vegetables can be cultivated under adverse climatic conditions. It is possible through protected cultivation, which has tremendous scope in peri-urban areas of the country. It is the best way to increase the productivity and quality of vegetables, especially cucurbits. India is the world’s second-largest producer of vegetables, next only to China.

Introduction

The ill effects of chemicals used in agriculture have changed the mindset of consumers in different countries, who are now buying organic products with a high premium for health. Policymakers are also promoting organic agriculture for the restoration of soil health and the generation of the rural economy, apart from making efforts to create a better environment. The world principles of organic farming have emerged in the form of biological farming, ecological farming, permaculture, biodynamic agriculture, green farming, bio-intensive farming, zero-input agriculture, etc..

Organic agriculture is one of the broad spectrums of production methods that are supportive of the environment. Organic production systems are based on specific standards precisely formulated for food production and aim at achieving agroecosystems that are socially and ecologically sustainable. Organic farming practices help in increasing carbon sequestration, soil and water conservation, and minimizing risk in agriculture. The important aspects of organic farming with respect to water conservation are mentioned in this chapter.

Nutraceuticals have received considerable attention for their expected safety and potential nutritive and therapeutic effects. These were used as alternatives to modern medicines that promote quality of health, increase the nutritional value of the diet, and prolong life expectancy. Major constituents of nutraceuticals are herbals; various nutrients and dietary supplements are involved in preventing different diseases and minimizing the pathophysiology of the disease too. It also acts as an immune boosting, natural antioxidant, anticancer, anti-inflammatory, anti-diabetic, cardioprotective, and organ protective agent, in addition to different health-promoting effects. Ultimately, they ensure a better quality of life.

The scope of the nutraceutical field is plenty both in terms of type and the varieties. The nutraceuticals industry in India is one of the rapidly growing markets. Higher- and upper-middle-class consumers are perceiving nutra ceuticals as alternatives to prescribed drugs and exclusively for their beneficial properties without any side effects. Consumers are showing sharp interest in nutraceuticals for boosting energy and improving their physical endurance and mental alertness. Nutraceutical industries are focusing on developing new products with innovative formulations and using proper advertisements to choose the right products. Nutraceuticals have significant promise in the promotion of human health and the prevention of disease. They are widely accepted by all age groups due to their safety, higher quality, purity, efficacy, health-promoting, and disease-curing activities. The newest trend is moving toward nutraceuticals, leading to a new era of medicine and health. It is still in its infancy in India. But in this hype era, we must say, “let food be your medicine” and “proper nutraceuticals daily can keep the medicine away.”

Water is a very essential component for human civilization, living organisms, and natural habitats. It ma.kes up a major part of plant biomass (about 90% of plant cytoplasm; Singh, 2014). Irrigation, the largest water user sector, is currently under pressure to produce more with higher quality by using limited water to feed the increasing population of the country. The highest proportion of water is consumed by agricultural crops, which is called the blue water footprint, and it is assumed that the water scarcity will increase in the future in view of the changing climate. India has 18% of the world population; however, the water resources are only 4%. Even with all the planning and development, the country has not even been able to provide sufficient drinking water to all at the end of the 20th century. The water sector is facing a number of challenges regarding the availability, accessibility, use, and sustainability of its fresh water resources. Further, the distribution of water in the country is also uneven over space and time. Unfortunately, Rajasthan is the driest state in the country and has been water scarce (with per capita water availability below 1000 m3/year) since 1991. The efficient use of water in agriculture/ horticulture without affecting crop productivity or quality by adopting water saving irrigation techniques is the foremost need. Fruit crops, which have gained commercial attention in recent years, are an important component of Indian agriculture. Due to low irrigation and water use efficiencies, irrigation managers are looking for the introduction of effective water-saving devices and practices for water management in fruit crops.

In irrigated agriculture, water is the most important and precious input among all the inputs required for the biological activities of the plant. It is also a key input not only for ensuring food security but also for sustainable socio economic development. Water plays a crucial role in enhancing agricultural production and provides food security. On a global scale, 97.5% of water resources are salty ocean water, with only only 2.5% being fresh water. The bulk of the latter occurs in the polar ice and glaciers, as well as deep aquifers, some in water bodies like rivers and lakes, and in soil moisture. On the whole, less than 1% of the world’s fresh water resources are available for human use. The world’s average annual precipitation of about 1100 mm, marked by wide variation in water availability, is creating a great divide in regions, resulting in plenty of regimes and scare/acute shortage regions.

In India, the average annual precipitation, including snowfall, is 4000 billion cubic meter (bcm), of which water availability in the river systems is estimated at 1869 bcm, and out of which only 1122 bcm can be used. About 690 bcm is surface water and 432 bcm is ground water. As compared to the world’s average annual rainfall of 1100 mm, India receives 1170 mm, which is highly erratic and uncertain in both time and space. Thus, in India, very limited fresh water is available for use because of competitive and conflicting demand from the agriculture, industry, power, and domestic sectors, which is expected to increase from 10.7% in 1990 to 22.5% in 2025. While that of agriculture will decrease from 89.3% in 1990 to 77.6% in 2025. The projected requirement of water for use by the different sectors shows an increase in energy and industry as compared to the domestic and irrigation sectors by 2025, indicating a growing scarcity of water availability in the future.

Pineapple is a tropical plant with edible multiple fruit consisting of coalesced berries. It is named after pine cone due its resemblance with its structure. It is the most economically important plant in the family of Bromeliaceae. It is widely grown throughout the world for its dual-purpose use in the form of fresh fruit and many processed products. It is a tropical fruit having excellent taste, juiciness, aroma and flavour which is preferred by many people. It is also rich source of fibre, potassium and vitamin C, vitamin B1 and vitamin B6. One of the important constituents in the fruit is proteolytic enzyme bromelein which is known to have significant use in treating conditions like inflammation, sinusitis, arthritis and early recovery from surgery (Joy, 2010). Bromelein is a digestive enzyme also used as meat tenderizer. Pineapple is cultivated in an area of 106.22 thousand ha and total production is 1,527.93 thousand tons (APEDA). Major producing states of pineapple were West Bengal, Assam and Karnataka. Pineapple is highly perishable fruit which transpires heavily and lose moisture thus have high susceptibility to spoilage microorganism (Hossain and Bepary, 2015). There are often several difficulties in production of pineapple with its physiologically active state even after harvest and non climacteric nature. Even though production is more, there are enormous post harvest losses for the fruit. The overall losses being encountered constitute 32.12 percent (6.82% at farm level, 3.09% at wholesale market and transportation, 5.44 % at retail market level, 5.64% during storage, 4.31% in processing unit and 6.82% at consumer level respectively) as reported by Ningobam, (2019).

Horticultural sector, which is contributing significantly for food and nutrition security, employment opportunity and poverty alleviation, got a real boost only in the early 1990s which coincided with liberalization of Indian economy. National area and production of horticultural crops are showing increasing trend over the years and production of horticultural crops has outpaced the production of food grain since 2012-13(Press Information Bureau, Govt. of India, Ministry of Finance, 2016). According to Economic Survey 2015-16, the share of horticultural output in agriculture is more than 33% over last decade and the sector contributes 30.4% to GDP of Agricultural sector. Horticulture sector accounts for 37% of total export of agricultural commodities at present and the exports have recorded sustained rising trend (Jha et al., 2019). The export status of APEDA (Agricultural and Processed Food Products Export Development Authority) products in the recent years shows 28.18% growth in value of horticultural products over the previous year. The investment in horticultural sector with focused attention has resulted in spectacular change in the horticultural scenario and production and productivity of horticultural crops.

Pineapple (Ananas comosus) is an edible fruit bearing plant native to South America belonging to family Bromeliaceae. Pineapple is grown over an area of 1.06 million hectares with an annual production of 29.36 million metric tonnes (FAO, 2022). Pineapples are rich in vitamin C, minerals, fiber and low in calories. The enzyme bromelain present in pineapple is of considerable importance to the pharmaceutical and cosmetic industry (Varilla et al., 2021). The market for pineapples has been expanding significantly because of its appealing aroma compounds and nutritional benefits. The climate and distribution of rainfall in tropical and sub-tropical regions make these areas ideal for pineapple cultivation. Worldwide, Brazil is the leading producer of Pineapple followed by Philippines, Thailand, Costa Rica and India (FAO, 2022). In India the leading pineapple producing states are West Bengal, Northeastern region, Bihar, Kerala, Karnataka, Goa, and Maharashtra.This ‘Kew’ of Cayenne group and ‘Mauritius’ of the rough leaf Queen group are the two varieties dominating in India (Devi et al., 2013; Joy and Sindhu, 2012).

Botanically, Pineapple is a herbaceous perennial having short stem and tough waxy leaves. It produces a fleshy, edible, yellow fleshed which is a fusion of 100-200 berry like fruitlets. Most of the members of Bromeliaceae family are epiphytes i.e. grown on rocks and living trees though pineapples grow on the soil bearing sensitive adventitious root that cannot regenerate once damage and intolerant to poor soil aeration. The cultivated varieties of pineapple can be categorized into three groups namely, Cayenne, Queen, and Spanish. The Spanish and Cayenne groups can be cultivated for dual purposes viz. fresh fruit and canning. However, the Queen group are only cultivated for fresh fruit markets due to the presence of deep eyes making it unsuitable for canning (Devi et al., 2013).

Pineapple is an important tropical fruit crop of India introduced by Portuguese from Southern Brazil early in the 16th century. It is a versatile fruit acting as a rich source of nutrients in many favourite recipes. In addition, it is an excellent source of vitamins, minerals, and antioxidants,highlighting its role as anti-inflammatory, digestion, and immunity support.It resembles epiphytes where roots are sensitive to poor soil aeration (Joy and Sindhu, 2012). In the present day, the demand for pineapple is increasing gradually in different parts of the country. However, insect-pests infestation turns out to be one of the major impediments in its quantum of production.

Pineapple is infested by several insect pests like mealy bug, scale insect, thrips, fruit borer, white grubs, bud moths, midges, fruit flies, termites etc. during its entire crop duration. However, Mealy bugs appeared as the key pest of pineapple while otherslike scale insects, thrips and fruit borer could cause economic damage to the crop only under favourable environment. Therefore, emphasis must be given for development of suitableecofriendly management techniques by proper prophylactic (cultural, mechanical, biological etc.) and protective measures to reduce the insect-pest population below the economic damage through proper monitoring and regular survey of the crop field.Thus, this chapter emphasizes on the important insect-pests infesting Pineapple along with their appropriate management options.

Pineapple i.e. Ananas comosus (L.) Mer. belongs to the Bromeliaceae family, which has around 46 genera and 1700 species, mainly cultivated in the tropical and sub- tropical regions. It is ranked third in production of tropical fruit after banana and citrus. The pineapple market has been growing extensively due to the attractive aroma compounds and nutritional values as well as huge demand and competitive retail prices (Ali et al., 2020). But, several sanitary problems have been reported in pineapple and they are considered as the main constraints for low yield of that crop in several producing areas. Significant yield losses have been caused by infestation of different pests like mealy bug, fruit borer, mites, scale insects, as well as with different nematode species (Pires de Matos, 2017). The crop lifecycle phases, soil, climatic variables and crop management practices influence the pest infestation intensity. In order to prevent severe crop losses, an integrated approach comprising prophylactic, biological, cultural, mechanical and need-based chemical steps is most appropriate for controlling pineapple pests and maintaining their population below the threshold level. This chapter deals with globally important pests of pineapple with their nature of damages and effective control measures in depth.

Pineapple, are well adapted crops for the farmers towards water economy due to its morphological, anatomical, and physiological characteristics. However, the plant contains rosette leaf structure can able to channels the light rainfalls and dew through stem and finally into the soil. It also have the ability to absorb water and nutrients through their waxy leaves and aerial roots and can capable to store water in specialized aquiferous leaf tissue; multicellular trichomes that cover the leaves and protect the plant from excessive transpiration by reflecting radiation; a thick cuticle covering the leaf epidermis that restricts water loss by evaporation, location of the stomata in furrows at the lower leaf surface where they also are covered by trichomes, limiting evapotranspiration; and its nocturnal carbon dioxide fixation via the crassulacean acid metabolism (CAM) carbon assimilation pathway, which results in stomatal opening primarily at night when evaporative demand is lowest (Reinhardt et al., 2018). The most common propagating material of pineapple is suckers or slips. Suckers are used to arise from the underground parts of the plant are used for propagation. Slips arise from the fruiting stem and the crown region on top of the fruit.

In this context, it is important to know the nutritional aspects of pineapples which are as attractive as their unique anatomy. “Pineapples contain high amounts of vitamin C and manganese,” said San Diego-based nutritionist Laura Flores. These tropical fruits are also important for the dietary fiber and bromelain (an enzyme). “As well as having high amounts of manganese, which is important for antioxidant defenses, pineapples also contain high amounts of thiamin, A, B vitamin that is involved in energy production,” Flores said. Pineapples are fat-free, cholesterol-free and low in sodium (Arpaia et al., 2004; De Costa, 2010). Side by side they contain sugars of about 14 grams per cup (www.livescience.com, 2019). In continuation with this, the chapter was focused on physiological disorder of pineapple caused by various reasons.

Basically, non-pathological conditions are the reasons of physiological disorders of any kind of crop plants; it includes poor light, adverse weather, water-logging, phytotoxic compounds or a lack of nutrients, which affects the normal functioning of the plant system. Sometimes physiological disorders may be initiated before harvest, continue their development after harvest, or appear after harvest. In was observed several times that physiological disorders are causative agent for the deterioration of horticultural commodities which leads to economic losses. An important commercialized fruit i.e., pineapple is also facing the same problem of different kind of physiological disorders; it includes multiple crowns, fruit and crown fasciation, collar of slips, dry fruit and bottle neck, sun-scald/ sunburn, blackheart etc.

Post-Harvest Losses

A post-harvest loss is defined as the measurable qualitative and quantitative food (including fruits and vegetables) loss along the supply chain, starting at the time of harvest till its consumption or other end uses (Hodges et al., 2011). Pineapple fruits are highly perishable in nature and continuously respired even after harvesting which limited its shelf-life leading to the storage problems (Hossain and Bepary, 2015) and decline in production due to post-harvest losses (Babalola et al., 2008). During the storage for distant marketing, pineapple fruits easily losses its moisture content through transpiration and become more susceptibility to microbial spoilage (Hossain and Bepary, 2015). In India the top five leading pineapple producing states are West Bengal, Assam, Karnataka, Meghalaya and Manipur (Anonymous, 2018). The measurable qualitative and quantitative losses of pineapple at post-harvest level are from the various stages of handling from the farm level up to the consumers (Table 1 and 2).

The history of plant growth regulation was knownfor many years before the time of Christ, when it was common practice in the Middle East to place a drop of olive oil on figs to promote development. The use of plant growth regulators (PGRs) to modify growth and flowering of pineapple began in 1930s. In eighteenth century when a carpenter was working in a greenhouse in the Azores Islandaccidently set fire to a pile of shavings. To the surprise of the grower who had thought his plants were ruined, they burst into flower instead of being damaged (Collins, 1960). In Hawaii, Rodriguez (1932) noticed in the pineapple fields that smoke from brush fires adjacent to the field caused premature flowering. The ingredients of smoke were subsequently found to be ethylene and acetylene, the unsaturated hydrocarbons. During the 1940’s, auxins were also shown to produce this effect,α-Naphthalene acetic acid (NAA), β-Naphthalene acetic acid (BNA), Fruitone and naphthaleneacetamide were the next forcing agent to become commercially used in pineapple. Since that time many works have been carried out with improving results like natural and synthetic compounds that alter function, shape and size of crop plants have been discovered. Today, specific PGRs are used to modify crop growth rate and growth pattern during the various stages of development from germination through harvest and post-harvest preservation. The use of regulating chemicals has become an important component of agro-technical procedures for most of the cultivated plants and especially for fruit plants.

Pineapple is one of the most economically important fruits in tropical and subtropical regions and gaining popularity to the consumers all over the world. The pineapple plant has many specific morphological, anatomical and physiological characteristics that determine crucial aspects of pineapple crop management, such as water use efficiency, nutrient management, weed management, flower induction etc.

Water Requirements and Irrigation

Determination of water requirements and plant moisture status: Pineapple plant responds well to as much as 5 cm of water per month from rain or irrigation though it is a xerophyte type and is capable of good production under relatively meager water supply. Maintenance of available soil moisture in the root zone areas requires less water for pineapple than for other crops due to lower transpiration rates. Plants achieve this type of adaptability through a process called assuberization, where suberin act as a physical barrier, preventing water loss from the tissues it surrounds.Stomata remains closed as an effect of drought during the entire day. But, whenever the plants are grown with sufficient moisture in well-aerated soils produced well-distributed roots with numerous white root tips. It helps the water use efficiency and carbon f ixation that pineapple shows to drip irrigation. The pineapple leaf is a major water storage organ for the pineapple plant (Malézieux et al., 1993). When the leaves are full of water the cells present in upper mesophyll layer can occupy almost half of its volume. Invery little water-supply, the water in the mesophyll layer is absorbed by the plant. Generally, representative ‘D’-leaves are taken in a group of six to ten leaves and the total thickness is measured and compared with the thickness of fully turgid leaves.

Organic products are grown under a system of agriculture without the use of chemical fertilizers and pesticides with an environmentally and socially responsible approach. This is a method of farming that works at grass root level preserving the reproductive and regenerative capacity of the soil, good plant nutrition, and sound soil management, produces nutritious food rich in vitality which has resistance to diseases. India is bestowed with lot of potential to produce all varieties of organic products due to its various agro climatic conditions. In several parts of the country, the inherited tradition of organic farming is an added advantage. This holds promise for the organic producers to tap the market which is growing steadily in the domestic and export sector.

As per the available statistics, India’s rank 8th in terms of World’s Organic Agricultural land and 1st in terms of total number of producers as per 2020 data (Source: FIBL & IFOAM Year Book, 2020). The APEDA, Ministry of Commerce & Industries, Government of India is implementing the National Programme for Organic Production (NPOP). The programme involves the accreditation of Certification Bodies, standards for organic production, promotion of organic farming and marketing etc. The NPOP standards for production and accreditation system have been recognized by European Commission and Switzerland for unprocessed plant products as equivalent to their country standards. Similarly, USDA has recognized NPOP conformity assessment procedures of accreditation as equivalent to that of NOP of US. With these recognitions, Indian organic products duly certified by the accredited certification bodies of India are accepted by the importing countries. APEDA is also in the process of bilateral equivalence with South Korea, Taiwan, Canada, Japan etc.

Pineapple is considered as one of the important tropical fruits which are extremely demanded in the international market. This is due to its various quality characteristics like sweeter taste, blemish-free flesh, a cylinder shape with golden yellow pulp, a very pleasant aroma when ripe, low acidity, and a longer shelf life compared to other varieties (Banful et al., 2011; Malezieux et al., 2003). Pineapple can grow well in low as well as high fertile soil but the best production is obtained with high fertile soils. Souza et al. (2007) found that a fruit’s weight is directly correlated with the plant vigour at the time of f loral differentiation with a minimum D-leaf length. Therefore, it is proved by Souza et al. (2007) that nutrients play animportant role in pineapple cultivation to increase the growth and yield of the crop. It is also noted that the pineapple plants have a large nutrient uptake demand, especially for potassium, followed by nitrogen, calcium, magnesium, sulphur, and phosphorus.

The focus on pineapple production should not only aim for stable volumes but also sustainable growth while maintaining quality standards amidst a growing population. The ‘Green Revolution’ with high inputs has plateaued, emphasizing the need for a natural balance to sustain life and property. Effective plant nutrient management is crucial for environmental, economic, and social reasons. Pineapple’s nutrient requirements, high in nitrogen (N), potassium (K), and iron (Fe), with lower needs for phosphorus (P) and calcium (Ca), make soil organic matter desirable. Repeated cultivation exhausts soil nutrient reserves, leading to decreased yields. Heavy synthetic fertilizer use may cause soil impaction and acidification. Combining organic manure with chemical fertilizers is recommended for profitable and sustainable crop production while preserving soil fertility. However, excessive nitrogen application poses health risks. As farmers transition to organic farming, the negative impact of inorganic fertilizers on pineapple size, yield, and quality is evident.