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Ppt on Cultivation Practices And Varietal Selection Of Pomegranate In India

This presentation provides a comprehensive overview of the cultivation of pomegranate (Punica granatum), a subtropical fruit crop of significant economic importance. It covers key aspects such as botanical characteristics, agro-climatic requirements, propagation, orchard management, pest and disease control, and post-harvest handling. The content is structured to support academic understanding and practical application in horticultural production systems.

General Information

  • Order: Myrtales; Family: Punicaceae; Scientific name: Punica granatum L.
  • Chromosome number: 2n = 2x = 16, 18; Synonyms include Punica florida, P. grandiflora, P. nana, and P. spinosa.
  • Pomegranate is a subtropical, non-climacteric fruit with aril as the edible portion.
  • Fruit type: Balausta; exhibits low maintenance cost and is salt hardy.
  • Primarily grown for its nutritional and medicinal value.

Area and Distribution

  • Native to Iran (Persia), now widely cultivated in India and other countries.
  • India leads global pomegranate production, with Maharashtra accounting for ~73% of area.
  • Other Indian states: Gujarat, Rajasthan, Karnataka, Tamil Nadu, Andhra Pradesh, Uttar Pradesh, Punjab, Haryana.
  • Major export destinations: UAE, Netherlands, UK, Saudi Arabia, Russia, Bangladesh, Egypt, Nepal, Oman.

Industrial Uses

  • Consumed fresh or processed into juice, syrups, jelly, and wine.
  • Juice is rich in citric acid and sodium citrate; used in pharmaceutical and food industries.
  • Seed oil has industrial applications.
  • Medicinal uses include treatment for digestive disorders and as a dietary supplement.

Agro-Climatic Requirements

  • Thrives in semi-arid to subtropical climates; tolerates altitudes up to 1800 m.
  • Requires hot, dry summers and cool winters; frost tolerant during dormancy but injured below -11°C.
  • Prefers well-drained sandy loam to deep loamy or alluvial soils; salt tolerant.
  • Optimal temperature: up to 38°C; adequate irrigation is essential for fruit development.

Varieties Cultivated

  • Major Indian varieties: Alandi (Vadki), Dholka, Kandhari, Ganesh (GB I), Muskat, Nabha.
  • Other selections: G 137, P 23, P 26, Mridula, Aarakta, Jyoti, Ruby, IIHR Selection, Yercaud 1, Co 1.
  • Varieties differ in fruit size, rind color, aril color, seed hardness, and juice quality.

Notable Varieties: Characteristics

  • Ganesh: High-yielding, medium-sized fruit, pinkish flesh, soft seeds, agreeable taste.
  • Alandi: Medium fruit, blood red arils, sweet-acidic juice, hard seeds.
  • Dholka: Large fruit, greenish-white rind, sweet-acidic juice, soft seeds; prominent in Gujarat.
  • Kandhari: Large, deep red rind, dark red flesh, slightly acidic juice, hard seeds; grown in Himachal Pradesh.
  • Muskat: Small-medium fruit, thick rind, moderately sweet juice, rosy seeds.
  • Nabha: Medium tree, yellowish smooth skin, 65% juice, light pink arils, medium soft seeds.

Propagation

  • Vegetative propagation preferred to maintain varietal traits; cuttings are most common.
  • Best time for cuttings: December–January (dormant period).
  • Cuttings planted directly in nursery fields; rooting enhanced with 10,000 ppm IBA in lanolin.
  • Air-layering (gootee) is also practiced for propagation.

Planting Operations

  • Spacing: 5 x 5 m in square system; pit size: 60 x 60 x 60 cm.
  • Pits refilled with topsoil, 20–25 kg FYM/compost, and 1 kg single superphosphate (SSP).
  • Best planting time: January–mid-February (North India), monsoon season (South India).

Flowering and Fruiting

  • Commercial bearing starts 3–4 years after planting.
  • Multiple flowering seasons: 3 in Western India, 2 in Northern India.
  • Anthesis occurs between 8 AM and 4 PM, peaking at 2 PM; stigma receptive up to 5 days.
  • Fruit set rates: Dholka 63.8%, Bedana 63%.

Orchard Cultural Practices: Irrigation and Interculture

  • Regular irrigation essential from flowering to harvest; drought stress causes flower drop and fruit cracking.
  • Winter irrigation interval: 8–10 days; summer: 4–6 days.
  • Drip irrigation recommended for efficient water use.
  • Shallow inter-cultivation suppresses weeds and conserves soil moisture; mulching advised.

Orchard Cultural Practices: Manuring and Training

  • Apply FYM and fertilizers as per plant age; split doses recommended for nutrients.
  • Manure applied at monsoon onset; fertilizers in trenches around plants.
  • Immediate irrigation after manuring enhances nutrient uptake.
  • Training to multi-stem system from second year; regular pruning removes weak, dead, or diseased wood.
  • Apply Bordeaux paste to pruning cuts to prevent infection.

Crop Regulation and Pollination

  • Flowering regulated by bahar treatments: Mrig (June–July), Hasth (Sept–Oct), Ambe (Feb–Mar).
  • Fertilizer and irrigation schedules adjusted for desired bahar.
  • Pomegranate is both self- and cross-pollinated; hand pollination increases fruit set.

Harvesting and Post-Harvest Handling

  • Fruits mature in 5–7 months; harvest indicators: color change, softening, flattening of ridges, metallic sound when tapped.
  • Harvest with secateurs/clippers to avoid fruit damage.
  • Sort fruits by size, maturity, and blemishes; pack in cushioned crates or baskets.
  • Transport promptly to markets to maintain quality.

Physiological Disorders: Fruit Cracking

  • Caused by boron and calcium deficiencies, irregular irrigation, and environmental stress.
  • Cracked fruits are susceptible to insect and fungal attack, reducing marketability.
  • Mrig bahar crop is more prone to cracking.
  • Control: light irrigation, windbreaks, borax spray (0.1%), GA3 spray (250 ppm) in June.

Major Insect Pests

  • Pomegranate butterfly (Virachola isocrates): larvae bore into fruit, causing rot and drop.
  • Bark eating caterpillar (Indarbela quadrinotata): bores into trunk, causing webbing and stem death.
  • Sap-sucking insects: aphids, mealy bugs, thrips; cause stunted growth and sooty mold.

Insect Pest Management

  • Remove and destroy infested fruits and plant parts regularly.
  • Neem-based sprays (NSKE 5%, neem oil 3%) deter oviposition; repeat applications as needed.
  • Bagging fruits post fruit set prevents pest entry.
  • Bark caterpillar: clean webs, insert petrol/kerosene-soaked cotton in holes, seal with mud; alternate sprays of Carbaryl, Quinalphos, or Methomyl as per recommendations.

Major Diseases and Management

  • Leaf spot and fruit spot (Xanthomonas punicae): water-soaked, dark spots on leaves and fruits; can cause defoliation and fruit cracking.
  • Fruit rot (Phomopsis sp.): affects flowers and young fruits, causing premature drop and spotting; prevalent in rainy season.
  • Cultural control: use disease-free seedlings, proper spacing, organic amendments, and recommended NPK.
  • Chemical control: spray Captan or Dithane M-45 (0.2%) for leaf spot; Dithane Z-78 (0.2%) for fruit rot at fortnightly intervals.
  • Remove and destroy infected plant parts to reduce inoculum.

Objective Questions

Q1. Which of the following is NOT a synonym for Punica granatum L.?
A. Punica florida Salisb.
B. Punica grandiflora hort. ex Steud.
C. Punica indica Roxb.
D. Punica nana L.
Answer: C

Q2. Which pomegranate variety is specifically noted for having soft seeds and being an important variety of Gujarat?
A. Alandi
B. Dholka
C. Kandhari
D. Muskat
Answer: B

Q3. The best time for making cuttings for vegetative propagation of pomegranate is:
A. March-April
B. June-July
C. December-January
D. September-October
Answer: C

Q4. Which of the following bahar treatments is associated with the highest susceptibility to fruit cracking in pomegranate?
A. Mrig bahar
B. Hasth bahar
C. Ambe bahar
D. None of the above
Answer: A

Q5. The recommended basal application per pit at planting for pomegranate includes:
A. 10-15 kg FYM + 2 kg SSP
B. 20-25 kg FYM/Compost + 1 kg SSP
C. 5 kg FYM + 0.5 kg SSP
D. 30 kg FYM + 3 kg SSP
Answer: B

Q6. Which of the following is a major symptom of pomegranate fruit borer (Virachola isocrates) infestation?
A. Yellowing of leaves
B. Offensive smell and excreta at entry holes
C. Wilting of branches
D. Leaf curling
Answer: B

Q7. Which chemical is recommended for improving rooting in pomegranate cuttings?
A. Indole-3-acetic acid (IAA)
B. Naphthalene acetic acid (NAA)
C. Butyric acid (10000 ppm in lanolin)
D. Gibberellic acid (GA3)
Answer: C

Q8. The main edible portion of the pomegranate fruit is:
A. Mesocarp
B. Endocarp
C. Aril
D. Seed coat
Answer: C

Q9. Which of the following is NOT a recommended control measure for bark eating caterpillar (Indarbela quadrinotata) in pomegranate?
A. Cleaning webs around affected portion
B. Inserting cotton swab soaked in petrol or kerosene into holes
C. Spraying neem oil (3%)
D. Sealing holes with mud
Answer: C

Q10. The pathogen responsible for leaf spot and fruit spot in pomegranate is:
A. Phomopsis sp.
B. Xanthomonas punicae
C. Alternaria alternata
D. Fusarium oxysporum
Answer: B

Ppt on Advances In Walnut Production Botany And Nutritional Value

This presentation provides a comprehensive overview of the advanced production technology of walnut (Juglans regia L.), emphasizing its botanical characteristics, ecological requirements, and commercial significance. Key aspects include origin and distribution, propagation methods, orchard management, varietal improvement, and plant protection strategies. The content integrates recent research and best practices to enhance productivity and sustainability in walnut cultivation.

Introduction & Importance

  • Walnut (Juglans regia L.) is a major temperate nut crop valued for its nutritional, economic, and ecological benefits.
  • Known as the ‘royal nut,’ it has historical significance in trade and mythology, with origins traced to Persia (Iran) and spread to Europe and beyond.
  • Walnut is a rich source of proteins, fats, minerals, and phytochemicals, notably omega-3 fatty acids, supporting brain health.
  • All parts of the walnut tree are utilized: nuts for food, oil for culinary and industrial uses, timber for furniture, and shells for abrasives and insecticide diluents.
  • Walnut cultivation contributes significantly to export earnings, especially in India, and is used for reclaiming degraded lands due to its robust root system.

Origin, Distribution & Systematics

  • Walnut’s center of origin is Southeast Europe and Western Asia, with fossil evidence suggesting ancient cultivation.
  • Major producers include China, Iran, USA, and Turkey; in India, Jammu & Kashmir leads production, followed by Himachal Pradesh and Uttarakhand.
  • The genus Juglans (family Juglandaceae) comprises about 21 species, divided into sections such as Rhysocaryon (black walnuts) and Juglans (J. regia).
  • Juglans regia is the primary commercial species, distinguished by hull dehiscence at maturity and high-quality nuts.
  • Other species like J. nigra (Eastern black walnut) and J. hindsii (Northern California black walnut) are important for rootstocks and timber.

Botanical Description

  • Walnut is a large, deciduous tree with aromatic, pinnately compound leaves and chambered pith in shoots.
  • Monoecious flowering habit: male (staminate) flowers in catkins on previous season’s growth; female (pistillate) flowers at shoot tips.
  • Fruit is a true nut (drupaceous nut), with an edible portion being the lobed cotyledons inside a hard shell and involucre (husk).
  • Exhibits allelopathic effects, suppressing weed growth beneath the canopy.
  • Growth follows a double sigmoid curve, with two rapid periods of fruit development interspersed by slower growth.

Ecological Requirements

  • Optimal altitude for commercial cultivation: 900–2500 m above sea level; superior nut quality at higher elevations but risk of frost above 2500 m.
  • Requires cool autumns for dormancy induction; tolerates -11°C in dormancy but is sensitive to late spring and early fall frosts.
  • Chilling requirement varies by cultivar (700–1500 hours below 7°C).
  • Prefers deep, well-drained, slightly acidic soils (pH 5.5–6.5) rich in organic matter; intolerant of waterlogging.
  • Annual rainfall or irrigation equivalent of 760–800 mm is necessary; shelter from strong winds is recommended.

Commercial Varieties

  • Major Indian varieties: CITH Walnut-1 to 10, Hamdan, Sulaiman, and selections like Govind and Roopa; international cultivars include Chandler, Hartley, Franquette, and Serr.
  • Varietal traits include nut size, shell thickness, kernel color, yield, and bearing habit (terminal vs. lateral).
  • Lateral bearing trait is associated with early and higher yields; CITH-W-121 is a notable Indian accession with this trait.
  • Interspecific hybrids (e.g., Paradox: J. hindsii × J. regia) are used as rootstocks for disease resistance and adaptability.
  • Selection of varieties with desirable traits (precocity, nut quality, disease resistance) is crucial for productivity improvement.

Propagation

  • Walnut is propagated by seeds (for rootstocks) and vegetative methods (grafting, budding) for true-to-type plants.
  • Common rootstocks: J. regia (Asia), J. hindsii, J. nigra, and Paradox hybrid (USA); choice depends on soil and disease resistance.
  • Vegetative propagation methods include cleft grafting, patch budding, and epicotyl grafting; success rates are improved under controlled humidity and temperature.
  • Recent advances: Epicotyl grafting with dwarf rootstocks and sawdust covering yields high success; omega and V-grafting methods enhance callusing and survival.
  • Micropropagation and hot water callusing techniques are being explored for mass propagation.

Planting & Layout

  • Recommended planting systems: square or quincunx, with pollinizer varieties every 8th row perpendicular to wind direction.
  • Spacing varies by rootstock: 12×12 m (seedlings), 10×10 m (J. regia grafted), 8×8 m (J. nigra grafted).
  • Pits are prepared based on soil type and filled with a mixture of farmyard manure and topsoil.
  • High-density planting (closer spacing) increases early yield and net returns, though dwarfing rootstocks are not yet widely used.
  • Planting is done in late dormant or early spring, followed by immediate irrigation.

Tree Architecture & Pruning

  • Walnut trees are trained to a modified central leader system with 5–6 main laterals.
  • Pruning is conducted in early spring to avoid excessive bleeding; selective thinning prevents overcrowding.
  • Bearing habit (terminal vs. lateral) influences tree structure and productivity; lateral bearing is linked to higher yields and precocity.
  • Cluster bearing genotypes (e.g., SN-1) have been identified, offering potential for increased productivity.
  • Peaches are sometimes interplanted for the first 10–15 years to utilize space and resources efficiently.

Flowering Physiology

  • Walnut is monoecious and dichogamous, with male and female flowers maturing at different times to promote cross-pollination.
  • Flowering period varies by cultivar and location; peak in mid-April to early May in northern India.
  • Pollen viability is low and stigma receptivity is brief, necessitating overlapping bloom periods or mixed cultivar planting for effective pollination.
  • Application of gibberellic acid (GA₃) can alter flowering patterns and increase flower numbers, especially in larger trees.
  • Pollen can be collected and stored at sub-zero temperatures to extend viability for artificial pollination.

Orchard Cultural Practices

  • Fertilizer application is based on tree age and leaf nutrient analysis; split applications of nitrogen are recommended for optimal uptake.
  • Intercropping with legumes and low-growing vegetables is feasible during the early years of orchard establishment.
  • Irrigation is essential during dry periods and critical growth stages, but overwatering should be avoided to prevent root diseases.
  • Weed control is achieved using herbicides like simazine and diuron, along with mulching to conserve moisture and suppress weeds.
  • Mulching is particularly important for young trees and after fertilizer application in mature orchards.

Harvesting & Handling of Fruit

  • Harvest when 80% of hulls have split and packing tissue turns brown (PTB stage); delay reduces nut quality and increases disease risk.
  • Harvesting involves manual collection or branch shaking, with multiple pickings over several weeks.
  • Post-harvest handling includes cleaning, washing, and drying nuts to 8% moisture to prevent mold and rancidity.
  • Grading is based on nut size and color; lighter kernels fetch higher market prices.
  • Proper storage at low temperature and humidity extends shelf life and maintains quality.

Walnut Plant Protection

  • Major diseases: walnut anthracnose (Gnomonia leptostyla), walnut blight (Xanthomonas campestris pv. juglandis), black line disease (cherry leaf roll virus), foot and root rot, and powdery mildew.
  • Integrated management includes sanitation, resistant varieties/rootstocks, chemical sprays (e.g., Bordeaux mixture, copper, carbendazim), and proper drainage.
  • Key insect pests: walnut leaf gall mite (Aceria arinoea), walnut aphid (Chromaphis juglandicola), codling moth (Cydia pomonella), walnut weevil (Alicides porrectirostis), and husk fly (Rhagoletis completa).
  • Pest control strategies involve timely insecticide applications, pheromone traps, and destruction of infested fruits.
  • Reducing tree size through grafted trees, dwarfing rootstocks, and pruning facilitates pest management and harvesting.

Future Thrusts

  • Challenges include low productivity due to poor planting material, pollination issues, low tree density, long juvenile period, and susceptibility to pests and diseases.
  • Breeding and selection for lateral bearing, short stature, early bearing, improved nut quality, and disease resistance are priorities.
  • Adoption of advanced propagation techniques and high-density planting can enhance orchard profitability.
  • Integrated pest and disease management, along with climate-resilient practices, are essential for sustainable walnut production.
  • Continued research and extension support are needed to address emerging challenges and promote best practices among growers.

Objective Questions

Q1. Which walnut species is most commonly used as a rootstock in Asia due to its compatibility and resistance to crown rot disease?
A. Juglans regia
B. Juglans hindsii
C. Juglans nigra
D. Juglans microcarpa
Answer: A

Q2. Which method of walnut grafting resulted in the highest callused grafts and graft-take percentages according to Majd et al. (2018)?
A. Tongue grafting
B. Omega grafting
C. Saddle grafting
D. V grafting
Answer: B

Q3. What is the chromosome number of Juglans regia?
A. 2n = 28
B. 2n = 32
C. 2n = 24
D. 2n = 36
Answer: B

Q4. Which state in India contributes more than 85% of the total walnut production in the country?
A. Himachal Pradesh
B. Uttarakhand
C. Jammu & Kashmir
D. Arunachal Pradesh
Answer: C

Q5. Which walnut rootstock is most tolerant to salts in soil or irrigation and resistant to oak root fungus in California?
A. Juglans regia
B. Juglans nigra
C. Juglans hindsii
D. Juglans microcarpa
Answer: C

Q6. Which of the following is a classical example of delayed incompatibility in walnut, caused by a virus and characterized by a dark line between stock and scion?
A. Walnut blight
B. Black line formation
C. Foot and root rot
D. Powdery mildew
Answer: B

Q7. In walnut, which type of dichogamy is exhibited by the English walnut (Juglans regia)?
A. Protogyny only
B. Both protogyny and protoandry
C. Protoandry only
D. None of the above
Answer: C

Q8. According to the research by Chand et al. (2018), which accession was identified as the first indigenous Indian walnut with lateral bearing trait?
A. CITH Walnut-1
B. CITH-W-121 (IC-0622836)
C. Sulaiman
D. Hamdan
Answer: B

Q9. For maximum propagation efficiency in walnut epicotyl grafting, which combination is recommended based on Raufi et al. (2017)?
A. Standard rootstock + perlite cover
B. Dwarf rootstock + sawdust cover
C. Standard rootstock + coco-peat cover
D. Dwarf rootstock + polyethylene cover
Answer: B

Q10. Which disease of walnut is caused by Xanthomonas campestris pv. juglandis and is best controlled by spraying metallic copper?
A. Walnut anthracnose
B. Walnut blight
C. Powdery mildew
D. Foot and root rot
Answer: B

Ppt on Soil Climate And Nutrient Management In Sapota Cultivation

Sapota (Manilkara achras), commonly known as sapodilla or chiku, is a tropical fruit crop of the family Sapotaceae. It is valued for its nutritional and economic significance, thriving in diverse agro-climatic conditions and marginal lands. Effective management of soil, climate, nutrients, and water, along with addressing specific problems, is essential for optimizing sapota cultivation and yield.
Introduction and Importance
  • Sapota (Manilkara achras) is a tropical fruit introduced from Central America, widely cultivated in India.
  • Commonly known as sapodilla or chiku, it belongs to the family Sapotaceae.
  • Fruits are recommended for patients with tuberculosis and children with primary complex due to their nutritional value.
  • Offers high economic returns, even under marginal land and low-input conditions.
Climate and Soil Requirements
  • Grows well from sea level up to 1200 m altitude, preferring warm, moist climates.
  • Optimal temperature range: 11°C to 34°C; annual rainfall: 1250–2500 mm.
  • Best suited to coastal climates but adaptable to both dry and humid regions.
  • Prefers deep, well-drained, porous soils such as alluvium, sandy loams, red laterites, and medium black soils.
  • Tolerates moderate soil and irrigation water salinity.
Propagation and Planting
  • Propagation is mainly through grafting onto Manilkara hexandra (Pala) rootstock.
  • Planting season: June to December; recommended spacing: 8 x 8 m (standard), 8 x 4 m (high density).
  • Pits of 1 m³ are prepared and filled with topsoil, 10 kg FYM, 1 kg neem cake, and 100 g lindane (1.3%).
  • Grafts are planted with the graft union at least 15 cm above ground and staked for support.
Nutrient and Water Management
  • Immediate and regular irrigation is crucial after planting; water copiously post-planting, then every 10 days until establishment.
  • Annual application of FYM and NPK fertilizers, increasing with tree age; mature trees (6th year onwards) require 50 kg FYM, 1 kg N, 1 kg P, and 1.5 kg K per tree.
  • Fertilizers should be applied in September–October, 45 cm from the trunk, and incorporated into the soil up to the leaf drip line.
Aftercare and Intercropping
  • Regular removal of rootstock sprouts, water shoots, criss-cross, and lower branches is essential for healthy growth.
  • Legumes and short-duration vegetable crops can be intercropped during the pre-bearing stage to improve soil fertility and income.
Plant Protection and Disease Management
  • Leaf webber: Controlled by spraying phosalone at 2 ml/liter.
  • Hairy caterpillars: Managed with endosulfan at 2 ml/liter (note: endosulfan use is restricted in many countries; safer alternatives are recommended).
  • Budworm: Controlled by phosalone spray at 2 ml/liter.
  • Sooty mould: Treated by spraying a 5% solution of boiled maida or starch (1 kg in 20 liters water).
Harvesting, Ripening, and Yield
  • Fruits are ready for harvest when dull brown and the skin beneath is lighter in color; mature fruits lose brown scaly material and have reduced latex.
  • Harvesting is done by hand picking; main seasons are February–June and September–October.
  • Ripening is accelerated by placing fruits in airtight chambers with 5000 ppm Ethrel and 10 g NaOH pellets.
  • Yield starts from the third year, reaching 20–25 t/ha/year in mature orchards.

Objective Questions

Q1. What is the ideal annual rainfall range for optimal sapota cultivation?
A. 500-1000 mm
B. 1250-2500 mm
C. 3000-4000 mm
D. 100-500 mm
Answer: B

Q2. Which rootstock is commonly used for grafting sapota plants?
A. Manilkhara zapota
B. Manilkhara hexandra
C. Achras sapota
D. Pouteria campechiana
Answer: B

Q3. What is the recommended spacing for high density planting of sapota?
A. 10 x 10 m
B. 6 x 6 m
C. 8 x 4 m
D. 12 x 12 m
Answer: C

Q4. Which of the following soils is NOT considered ideal for sapota cultivation?
A. Deep alluvium
B. Sandy loam
C. Red laterite
D. Heavy clay with hard pan
Answer: D

Q5. At what minimum height above ground should the graft joint be positioned when planting sapota?
A. 5 cm
B. 10 cm
C. 15 cm
D. 25 cm
Answer: C

Q6. Which chemical is recommended for spraying against sapota leaf webber?
A. Endosulfan
B. Phosalone
C. Lindane
D. Ethrel
Answer: B

Q7. What is the total amount of FYM (Farm Yard Manure) recommended per tree for a 6-year-old sapota?
A. 10 kg
B. 20 kg
C. 30 kg
D. 50 kg
Answer: D

Q8. Which intercrops are suitable during the pre-bearing stage of sapota?
A. Cereals and oilseeds
B. Legumes and short duration vegetables
C. Tubers and spices
D. Plantation crops
Answer: B

Q9. What is the recommended method for ripening harvested sapota fruits?
A. Exposing to sunlight
B. Dipping in ethylene solution
C. Keeping in airtight chamber with 5000 ppm Ethrel + 10 g NaOH pellets
D. Spraying with gibberellic acid
Answer: C

Q10. Which of the following is a clear sign of sapota fruit maturity?
A. Fruit turns bright green
B. Brown scaly materials disappear from the surface
C. Milky latex content increases
D. Stigma becomes sticky
Answer: B

Ppt on Tomato: Origin, Nutritional Value, Uses And Production Technology

Tomato (Solanum lycopersicum) is a globally important vegetable crop in the Solanaceae family, valued for its nutritional content and diverse uses. This topic covers the origin, botanical characteristics, varieties, cultivation practices, and disease and pest management essential for high-yield and quality tomato production. Understanding these aspects is crucial for students and professionals in horticulture and competitive agricultural exams.
Introduction and Origin
  • Tomato is a widely grown vegetable crop worldwide.
  • Botanical name: Solanum lycopersicum; Family: Solanaceae; Chromosome number: 2n=24.
  • Originated in the Andean region (Peru, Ecuador, Bolivia); domesticated in Mexico.
  • Introduced to India by the British in 1828.
Botanical Description
  • Annual herb with a tap root system (up to 50 cm deep).
  • Stem: Erect, solid, hairy, glandular; height 2–4 m.
  • Leaves: Compound, pinnatifid, irregularly toothed margins.
  • Flowers: Small, yellow, borne in racemes; perfect and hypogynous.
  • Fruit: Fleshy berry, globular to oblate, 2–15 cm diameter; color varies from green to red/yellow/orange.
  • Seeds: Numerous, kidney-shaped, hairy, light brown.
Growth Habit and Classification
Growth Habit:

  • Determinate: Bushy, self-topping, early maturity, staking not required.
  • Indeterminate: Erect, continuous growth, late maturity, staking required.

Botanical Classification (Bailey, 1949):

  • L. esculentum var. commune – Common round fruited
  • L. esculentum var. grandifolium – Potato-leaved
  • L. esculentum var. cerasiformae – Cherry tomato
  • L. esculentum var. validum – Upright tomato
  • L. esculentum var. pyriformae – Pear-shaped tomato
Nutritional Value and Uses
  • Rich in vitamins (A, B, C), minerals (iron, phosphorus, calcium), amino acids, sugars, and dietary fiber.
  • Ascorbic acid: 16–65 mg/100g; total sugars: ~2.5% in ripe fruit.
  • Used fresh, in salads, pickles, preserves, and processed products (puree, paste, ketchup, sauce, juice).
  • Contains lycopene (red pigment), carotenoids (yellow), and tomatine (alkaloid).
Area, Production, and Export
  • India: ~8.8 lakh ha, 182 lakh tonnes, productivity ~20.7 t/ha.
  • Leading states: Andhra Pradesh, Karnataka, Madhya Pradesh, Odisha, Gujarat.
  • Major export areas: Pune, Bangalore, Nasik, Amaravati.
  • Main importers: Pakistan, UAE, Bangladesh, Nepal, Oman.
Varieties and Hybrids
Selection Criteria:

  • High yield, disease resistance, fruit quality, shelf life, and TSS.

Popular Varieties:

  • Pusa Ruby, Arka Vikas, Arka Meghali, Arka Saurabh, Arka Abha, Pusa Early Dwarf, PKM-1, Hisar Anmol, Pant Bahar.

Hybrids:

  • Arka Rakshak, Arka Samrat, Arka Shreshta, Pusa Divya, Rashmi, Rupali, IAHS-88.2.

Special Traits:

  • Resistant to ToLCV: Nandi, Sankranti, Vaibhav, Arka Rakshak.
  • Resistant to bacterial wilt: Arka Alok, Arka Abha, Arka Shreshta.
Climate and Soil Requirements
  • Warm season crop; optimum temperature: 20–24°C.
  • Fruit set best at 15–20°C; lycopene synthesis optimal at 21–24°C.
  • Grows in all soils; sandy loam preferred for early crop, heavy soils for high yield.
  • Soil pH: 6.0–7.0; moderately tolerant to acidic soils (pH 5.5).
Sowing, Nursery, and Transplanting
  • Seed rate: OPV 300–400 g/ha; Hybrids 125–175 g/ha.
  • Seed treatment: Captan/Thiram @ 2 g/kg seed.
  • Nursery: Raised beds, protected with shade net, use sterilized cocopeat in protrays.
  • Seedlings ready in 25–30 days; hardened before transplanting.
  • Transplanting at 4–5 weeks; spacing: 60 × 45 cm.
Land Preparation and Mulching
  • Apply FYM @ 25 t/ha and neem cake @ 100 kg/ha before last ploughing.
  • Raised beds (120 cm width) for better drainage.
  • Mulching (plastic or organic) conserves moisture, controls weeds, and regulates soil temperature.
  • Plastic mulch (25 micron) can increase yield by 45–50%.
Irrigation and Fertilization
  • Total water requirement: 600–700 mm/ha.
  • Drip irrigation is efficient, saves water (up to 42%), and increases yield (up to 60%).
  • Frequent irrigation essential, especially during flowering and fruiting.
  • Balanced fertilization with NPK and micronutrients is crucial.
Cultural Practices
  • Weeding: Two hand hoeings and earthing up recommended.
  • Pre-emergence herbicides: Metribuzin (0.35 kg/ha), Pendimethalin (1.0 kg/ha).
  • Staking and training improve fruit quality and reduce disease incidence (especially for indeterminate types).
  • Pruning and desuckering maintain balance between vegetative growth and fruiting.
Growth Regulators
  • Ethephon (200–500 mg/L): Flower induction, rooting.
  • 2,4-D (2–5 mg/L): Increases fruit set, induces parthenocarpy.
  • GA3 (50–100 mg/L): Promotes shoot elongation and yield.
  • PCPA (50 mg/L): Enhances fruit set under adverse conditions.
Harvesting and Post-Harvest Management
  • First harvest: 60–85 days after transplanting, depending on variety.
  • Harvest stages: Immature green, mature green, breaker, pink, hard ripe, overripe.
  • Grading based on color, size, and maturity; BIS grades: Super A, Super, Fancy, Commercial.
  • Storage: 12–15°C, 85–90% RH; mature green fruits can be stored up to 30 days.
Yield
  • Open field: 50 t/ha; Greenhouse: up to 150 t/ha (Singh et al., 2013).
  • Yield depends on variety, management, and environmental conditions.
Physiological Disorders
Blossom End Rot

  • Brown, sunken lesions at blossom end; due to calcium deficiency and irregular watering.

Fruit Cracking

  • Radial/concentric cracks; caused by irregular irrigation, boron deficiency, genetic factors.

Sun Scald

  • Blistered, water-soaked areas on exposed fruits; aggravated by defoliation and pruning.

Puffiness

  • Partially filled, light fruits; due to poor fertilization, high temperature, or moisture.

Cat Face

  • Distorted blossom end with ridges and furrows; linked to low temperature during flowering.
Management of Physiological Disorders
  • Regular irrigation and balanced fertilization (especially calcium and boron).
  • Avoid excessive pruning and staking during hot periods.
  • Grow resistant/tolerant varieties for specific disorders.
  • Apply foliar sprays: CaCl2 (0.5%), borax (0.3–0.4%) as needed.
Major Pests of Tomato
Aphids, Thrips, Whitefly, Leaf Miner, Pinworm, Fruit Borer

  • Use yellow sticky traps, pheromone traps, and biological control (Chrysoperla, Trichogramma).
  • Spray recommended insecticides (e.g., dimethoate, malathion, neem formulations) as per guidelines.
  • Practice crop rotation and destruction of infested plant parts.
Major Diseases of Tomato
Damping Off (Pythium spp.)

  • Use raised beds, seed treatment with Trichoderma/Thiram, drench with copper oxychloride.

Early Blight (Alternaria solani)

  • Remove debris, crop rotation, spray Mancozeb 0.2%.

Late Blight (Phytophthora infestans)

  • Remove affected plants, crop rotation, drench with copper oxychloride/Bordeaux mixture.

Fusarium Wilt (Fusarium oxysporum f.sp. lycopersici)

  • Remove affected plants, spot drench with carbendazim, rotate with non-host crops.

Bacterial Wilt (Ralstonia solanacearum)

  • Use resistant varieties, crop rotation with non-hosts.

Mosaic (TMV), Leaf Curl (ToLCV)

  • Use disease-free seed, vector control (imidacloprid, dimethoate), crop rotation.
Integrated Pest and Disease Management (IPDM)
  • Use resistant varieties and healthy seedlings.
  • Practice crop rotation and field sanitation.
  • Monitor pests/diseases regularly; use traps and biocontrol agents.
  • Apply chemicals judiciously, following recommended doses and intervals.
Summary
  • Tomato is a high-value crop with diverse uses and nutritional benefits.
  • Proper variety selection, climate, soil, and cultural practices are key for high yield.
  • Integrated management of pests, diseases, and physiological disorders ensures quality production.
  • Knowledge of post-harvest handling and storage extends shelf life and marketability.

Objective Questions

Q1. Which scientist is known as the "Father of Tomato"?
A. Dr. C. M. Rick
B. Jenkins
C. Linnaeus
D. Bailey
Answer: A

Q2. The red color in tomato fruits is primarily due to which pigment?
A. Carotenoid
B. Lycopene
C. Pro-lycopene
D. Chlorophyll
Answer: B

Q3. Which variety of tomato is resistant to bacterial wilt?
A. Arka Meghali
B. Arka Abha
C. Pusa Ruby
D. Nandi
Answer: B

Q4. What is the optimum temperature range for lycopene synthesis in tomato?
A. 10-15°C
B. 21-24°C
C. 27-30°C
D. 30-35°C
Answer: B

Q5. Which growth regulator is used to increase fruit set, earliness, and parthenocarpy in tomato?
A. IBA
B. 2,4-D
C. NAA
D. GA
Answer: B

Q6. Which physiological disorder in tomato is controlled by foliar spray of 0.5% calcium chloride?
A. Fruit cracking
B. Sun scald
C. Blossom end rot
D. Puffiness
Answer: C

Q7. Which of the following is a determinate tomato variety?
A. Pusa Divya
B. Arka Abha
C. NDT-1
D. Pusa Ruby
Answer: B

Q8. Which pest is managed by releasing Trichogramma @ 1 lakh/ha in tomato?
A. Whitefly
B. Fruit borer
C. Thrips
D. Pinworm
Answer: B

Q9. For protected cultivation, which type of tomato varieties are most suitable?
A. Determinate
B. Semi-determinate
C. Indeterminate
D. Dwarf
Answer: C

Q10. Which disease is controlled by drenching with Copper oxychloride 0.2% or Bordeaux mixture 1%?
A. Fusarium wilt
B. Early blight
C. Damping off
D. Mosaic
Answer: C

Ppt on Cultivation Practices And Management Of Apple Orchards

This presentation covers the cultivation practices of apple (Malus domestica), a major temperate fruit crop. It details origin, economic importance, botany, varieties, climate and soil requirements, propagation, orchard management, plant protection, and post-harvest handling. Key concepts include varieties, propagation, orchard management, disease management, and post-harvest practices.
Introduction to Apple Cultivation
  • Apple (Malus domestica) belongs to family Rosaceae.
  • Known as the “king of temperate fruits.”
  • Major table fruit globally; widely consumed fresh and processed.
  • Originated in Central Asia; cultivated for over 4000 years.
Origin and Distribution
  • Origin: Central Asia (Kazakhstan region).
  • China is the largest producer globally.
  • In India, major states: Jammu & Kashmir, Himachal Pradesh, Uttarakhand, Arunachal Pradesh, Nagaland.
  • Apple is the main horticultural crop in Himachal Pradesh.
Area, Production, and Productivity (India, 2001-02)
State Area (‘000 ha) Production (‘000 MT) Productivity (MT/ha)
Jammu & Kashmir 90.1 909.6 10.1
Himachal Pradesh 92.8 180.6 1.9
Uttarakhand 51.8 59.3 1.1
Arunachal Pradesh 6.7 8.5 1.3
Nagaland 0.1 0.3 3.3
All India 241.6 1158.3 4.8
Economic Importance and Nutritional Value
  • Consumed fresh; also processed into juice, jelly, cider, wine.
  • Rich in dietary fiber, vitamins (A, B1, B2, C), and minerals (P, Ca, Fe).
  • One medium apple: ~95 kcal, 0.47g protein, 4.4g fiber.
  • “An apple a day keeps the doctor away.”
Botanical Description
  • Deciduous tree, 1.8–4.6 m tall in cultivation.
  • Leaves: alternate, simple, serrated margins, downy underside.
  • Flowers: white with pink tinge, 5-petaled, borne in cymes.
  • Fruit: pome type, red/yellow skin, pale flesh.
Varieties and Hybrids
  • Two types: Diploids (self-fruitful) and Triploids (require pollinizers).
  • Common diploids: Red Delicious, Golden Delicious, Jonathan.
  • Triploids: Baldwin, Northern Spy.
  • Indigenous: Ambri (Kashmir).
  • Important hybrids: Lal Ambri, Sunehri, Ambstarking, Ambroyal, Ambrich, Chaubattia Princess, Ambredred.
Climate Requirements
  • Requires 1000–1500 chilling hours below 7°C for dormancy break.
  • Optimal elevation: 1500–2700 m above MSL.
  • Ideal temperature: 21–24°C during growth.
  • Needs frost-free spring, adequate sunshine, 100–125 cm well-distributed rainfall.
Soil Requirements and Propagation
  • Prefers loamy, well-drained soils, pH 5.5–6.5, rich in organic matter.
  • Gentle to moderate slope; avoid waterlogging and hardpan.
  • Propagation: vegetative (budding/grafting) on crab apple or Malling rootstocks.
  • Malling IX controls vigor; Malus baccata common rootstock in India.
Planting Practices
  • Planting season: January–February.
  • Spacing varies: low (<250/ha), moderate (250–500/ha), high (500–1250/ha), ultra-high (>1250/ha).
  • Systems: square/hexagonal (valleys), contour (slopes).
  • Pits: 1m × 1m × 1m, filled with FYM, SSP, Malathion dust.
  • Irrigate immediately after planting.
Nutrient Management
  • FYM: 10 kg/tree/year; increase with age.
  • N:P:K ratio: 70:35:70 g/year/tree (increase with age).
  • After 10 years: 700:350:700 g NPK/tree/year.
  • Correct micronutrient deficiencies (Zn, B, Mn, Ca) via foliar sprays.
Irrigation and Training/Pruning
  • Annual water requirement: ~114 cm; 15–20 irrigations/year.
  • Critical period: April–August (fruit set to development).
  • Training: modified central leader system for standard trees.
  • Spindle bush system for high-density orchards.
  • Pruning maintains balance between growth and fruiting.
Intercultural Operations and Growth Regulators
  • Weed control: glyphosate, paraquat, mulching (hay, black alkathene).
  • Intercropping: green manure crops (sunflower, beans) in early years.
  • Growth regulators: carbaryl, NAA for fruit thinning and quality improvement.
Harvesting and Yield
  • Harvest at physiological maturity; apples are climacteric fruits.
  • Maturity indices: TSS, color change, seed color, fruit firmness.
  • Yield: 40–100 kg/tree at full bearing (after 5 years).
  • Productive lifespan: up to 50 years; alternate bearing common in some varieties.
Major Pests and Management
  • Woolly aphid: use resistant rootstocks (M778, MM104, MM110, etc.).
  • Biological control: Aphelinus mali, coccinellid predators.
  • Chemical control: carbofuran, chlorpyrifos, malathion, oxydemeton-methyl, quinalphos.
Major Diseases and Management
  • Apple scab: spray schedule with mancozeb, captafol, carbendazim.
  • Use stickers (Triton/Teepol) for better spray adherence.
  • Lichens: control with quick lime spray after pruning.
Post-Harvest Management
  • Pre-cooling: remove field heat before grading and packing.
  • Grading: by size, color, quality (AAA, AA, A, etc.).
  • Storage: 4–8 months at -1.1°C to 0°C, 85–90% RH.
  • Packing: wooden boxes or corrugated fiberboard cartons (10–20 kg capacity).
Summary of Apple Cultivation Practices
  • Selection of suitable varieties and rootstocks is crucial.
  • Proper site, soil, and climate are essential for high yield and quality.
  • Integrated orchard management ensures productivity and sustainability.
  • Timely pest, disease, and post-harvest management maximize returns.

Ppt on Apple Production Technology: Botany, Varieties, Climate, And Cultivation Practices

Apple (Malus domestica) is a major temperate fruit crop known for its high nutritional value and economic importance. This presentation covers the botany, climate requirements, varieties, propagation, orchard management, pest and disease control, and post-harvest practices of apple cultivation. Key academic concepts include rootstocks, chilling requirement, self-incompatibility, high-density planting, and integrated pest management.
Introduction to Apple Cultivation
  • Apple is called the ‘King of Temperate Fruits’ and is a symbol of health.
  • Deciduous fruit tree, widely grown in temperate regions worldwide.
  • India’s main apple-producing states: Himachal Pradesh, Jammu & Kashmir, Uttarakhand.
  • Apples have a long storage life and high economic value.
Nutritional Value of Apple
  • Rich in carbohydrates, dietary fiber, vitamins (A, C), and minerals (K, Ca).
  • Contains antioxidants and phytochemicals beneficial for health.
  • Low in fat and cholesterol.
Taxonomy and Botanical Features
  • Botanical name: Malus domestica; Family: Rosaceae; Subfamily: Maloideae.
  • Chromosome number: 2n=34 (x=17).
  • Origin: Southwestern Asia.
  • Fruit type: Pome; Edible part: fleshy thalamus (mesocarp).
  • Major sugar: Sorbitol; Flower color: white to pink.
Area and Production
  • China is the largest apple producer globally.
  • In India, apples account for 55% area and 75% production among temperate fruits.
  • Major Indian states: Himachal Pradesh (83% area), Jammu & Kashmir (45%), Uttarakhand (30%).
  • Also grown in NE states and Nilgiri hills (Tamil Nadu).
Climate and Soil Requirements
  • Altitude: 1500–2700 m above mean sea level.
  • Temperature: 21–24°C (fruit set: 21.1–26.7°C).
  • Chilling requirement: 1000–1500 hours below 7°C in winter.
  • Rainfall: 100–125 cm annually.
  • Soil: Loamy, rich in organic matter, pH 5.5–6.5.
Apple Varieties and Their Features
  • Early: Tydeman’s Early, Benoni, Early Shanburry.
  • Mid-season: Starking Delicious, Red Delicious, McIntosh.
  • Late: Golden Delicious, Yellow Newton, Granny Smith.
  • Spur types: Red Spur, Starkrimson, Oregon Spur.
  • Scab-resistant: Co-Op-12, Florina, Firdous.
  • Low-chilling: Michal, Schlomit.
  • Triploid: Baldwin, Mutsu, Bramley’s Seedling.
Rootstocks in Apple Cultivation
  • Seedling rootstocks: Raised from Malus baccata or commercial cultivars.
  • Clonal rootstocks: Propagated by mound/stool layering.
  • Dwarfing: M9 (high-density planting, weak anchorage).
  • Semi-dwarf: M4, M7, MM106 (aphid-resistant, collar rot susceptible).
  • Semi-vigorous: MM111, MM104 (drought-tolerant, aphid-resistant).
  • Vigorous: Merton 793 (aphid and collar rot resistant).
Spacing and Planting Density
  • Depends on scion-rootstock combination and tree vigor.
  • Standard: 6×6 m (278 trees/ha); Semi-dwarf: 4.5×4.5 m (494 trees/ha).
  • Dwarf: 1.5×1.5 m (4444 trees/ha) for high-density planting.
  • Ultra-high density: >1250 trees/ha.
Propagation Methods
  • Whip and tongue grafting is commonly used.
  • Rootstocks: Malus sylvestris, M. prunifolia, M. sikkimensis, or hybrids.
  • Grafting/budding performed on one-year-old rootstock seedlings.
Planting Practices
  • Pit size: 1m x 1m x 1m; Planting systems: square or hexagonal.
  • Best planting time: January–February.
  • Apply 30–40 kg FYM, 500 g single super phosphate, 50 g Malathion dust per pit.
Pollination and Pollinizers
  • Apple is self-incompatible; cross-pollination is essential.
  • Pollinizer plants should comprise 11–30% of orchard trees.
  • Recommended pollinizers: Royal Delicious, Red Delicious, Golden Delicious.
Fertilizer and Nutrient Management
  • FYM: 10 kg/year age of tree.
  • N:P:K: 70:35:70 g/year age (up to 10th year).
  • Micronutrient sprays: Urea (5%), CaCl2 (0.5%), ZnSO4 (0.5%), MnSO4 (0.4%), H3BO3 (0.1%).
  • Adjust fertilizer in ‘off’ years (lower crop load).
Irrigation and Water Management
  • Critical stage: fruit set (April–August).
  • Annual water requirement: ~114 cm (15–20 irrigations/year).
  • Summer: irrigate every 7–10 days; Winter: every 3–4 weeks.
Weed Management and Mulching
  • Herbicides: Glyphosate (800 ml/ha), Paraquat (0.5%) for post-emergence control.
  • Mulching with hay, black alkathene, dry grass, or oak leaves conserves moisture and suppresses weeds.
Intercropping and Green Manuring
  • Green manure crops (sunflower, bean) improve soil texture and fertility in young orchards.
  • Intercropping is recommended during early years of plantation.
Fruit Drop in Apple
  • Three types: early drop (poor pollination), June drop (moisture stress), pre-harvest drop (economic loss).
  • Pre-harvest drop controlled by NAA spray (10 ppm) one week before expected drop.
Use of Plant Growth Regulators
  • Carbaryl (750–1000 ppm) or NAA (10–20 ppm) at petal fall improves fruit set and color.
  • Growth regulators enhance flowering and fruit quality.
Training and Pruning Systems
  • Modified central leader system for standard trees ensures good light penetration.
  • Spindle bush system for high-density planting in mid hills.
  • Pruning maintains balance between vegetative growth and fruiting spurs.
  • Remove weak/undesirable branches after six years.
Harvesting and Yield
  • Economic bearing starts from 8th year; productive life up to 30–40 years.
  • Harvest before full ripeness; maturity index: color change, starch index 1–2.
  • Average yield: 11–13 t/ha (Himachal Pradesh, J&K); 5–6 t/ha (Uttarakhand).
Harvesting Methods
  • Hand harvesting, ladder harvesting, and mechanical harvesting are used.
  • Handle fruits carefully to avoid bruising and post-harvest losses.
Major Insect Pests and Management
  • Woolly aphid (Eriosoma lanigerum): Sucks sap, weakens trees.
  • Control: Resistant rootstocks (M778, MM14), dimethoate 0.06%, methyl demeton 0.025%, natural predator Aphytis mali.
  • San Jose scale (Quadraspidiotus perniciosus): Causes bark discoloration, fruit damage.
  • Control: Phosalone 0.05%, fenitrothion 0.05%, winter diesel oil emulsion spray.
Major Diseases and Management
  • Apple scab (Venturia inaequalis): Olive to black velvety spots on leaves/fruits.
  • Control: Clean cultivation, Tridemorph 0.1%, Mancozeb 0.25%.
  • Fire blight (Erwinia amylovora): Water-soaked, shriveled, blackened leaves.
  • Control: Remove affected parts, spray Streptomycin 500 ppm.
Physiological Disorders and Correction
  • Water core: Boron deficiency; correct with borax application.
  • Bitter pit: Calcium deficiency; correct with CaCO3 application.
  • Rosette leaf: Zinc deficiency; correct with ZnSO4 application.
Post-Harvest Technology
  • Steps: Harvesting, precooling, grading, storage, packing, transportation, marketing.
  • Storage: 4–8 months at 0–1.1°C, 85–90% RH.
  • Packing: Wooden boxes or corrugated fiberboard cartons (10–20 kg).
Constraints in Apple Cultivation
  • Old orchards with declining productivity.
  • Inadequate pollinizers and outdated varieties.
  • Poor adoption of clonal rootstocks, pruning, and micronutrient management.
  • Low water/fertilizer use efficiency; weather risks (frost, hail).
  • Major disease: Apple scab; post-harvest losses due to poor handling.
Future Thrust and Recommendations
  • Expand cultivar base and adopt low-chilling, disease-resistant varieties.
  • Promote high-density planting, scientific water management, and renewal pruning.
  • Improve post-harvest infrastructure and processing capacity.
  • Encourage tissue culture for rapid multiplication of quality planting material.
Conclusion
  • Apple is vital for India’s horticultural economy, especially in hill regions.
  • Systematic cultivation, improved varieties, and modern management can boost productivity and income.
  • Focus on high-density planting, integrated nutrient and pest management, and post-harvest practices is essential.
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