Course Content
Unit 1 –
Agriculture significantly contributes to the national economy. Key principles of crop production focus on efficient soil, water, and nutrient management. The cultivation practices of rice, wheat, chickpea, pigeon-pea, sugarcane, groundnut, tomato, and mango are vital. Understanding major Indian soils, the role of NPK, and identifying their deficiency symptoms are essential for crop health. Fundamental biological concepts like cell structure, mitosis, meiosis, Mendelian genetics, photosynthesis, respiration, and transpiration are crucial for crop science. Biomolecules such as carbohydrates, proteins, nucleic acids, enzymes, and vitamins play significant roles in plant metabolism. Effective management of major pests and diseases in rice, wheat, cotton, chickpea, and sugarcane is critical. Rural development programmes and the organizational setup for agricultural research, education, and extension support agricultural growth. Basic statistical tools, including measures of central tendency, dispersion, regression, correlation, probability, and sampling, aid in agricultural data analysis.
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Unit 2
The theory of consumer behavior explains decision-making based on preferences and budget constraints. The theory of demand focuses on the relationship between price and quantity demanded, while elasticity of demand measures demand responsiveness to price changes. Indifference curve analysis shows combinations of goods yielding equal satisfaction, and the theory of the firm examines profit-maximizing production decisions. Cost curves represent production costs, and the theory of supply explores the relationship between price and quantity supplied. Price determination arises from supply and demand interactions, and market classification includes types like perfect competition and monopoly. Macroeconomics studies the economy as a whole, while money and banking analyze monetary systems and financial institutions. National income measures a country's total economic output, and agricultural marketing includes the role, practice, and institutions involved in distribution, along with crop insurance, credit, and cooperatives. Capital formation, agrarian reforms, globalization, and WTO impact Indian agriculture by influencing credit access, investments, and global trade policies.
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Unit 3
Farm management involves principles of farm planning, budgeting, and understanding farming systems. Agricultural production economics focuses on factor-product relationships, marginal costs, and revenues. Agricultural finance includes time value of money, credit classifications, and repayment plans. Credit analysis incorporates the 4R’s, 5C’s, and 7P’s, with a history of agricultural financing in India, led by commercial banks and regional rural banks. Higher financing agencies like RBI, NABARD, and World Bank play key roles in credit access, capital formation, and agrarian reforms in India.
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Unit 4
Extension education focuses on the principles, scope, and importance of agricultural extension programs. It includes planning, evaluation, and models of organizing extension services, with a historical development in the USA, Japan, and India. Rural development addresses key issues and programs from pre-independence to present times. It involves understanding rural sociology, social change, and leadership, while promoting educational psychology and personality development in agricultural extension. The Indian rural system emphasizes community values, structure, and adult education.
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Unit 5
Communication involves principles, concepts, processes, elements, and barriers in teaching methods, with various communication methods and media, including AV aids. Media mix and campaigns, along with cyber extension tools like internet, cybercafés, Kisan Call Centers, and teleconferencing, play a key role. Agriculture journalism focuses on the diffusion and adoption of innovations through adopter categories. Capacity building of extension personnel and farmers is essential, with training for farmers, women, and rural youth. Effective communication and extension methods are crucial for agricultural development.
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Topic Wise Multiple-Choice Questions (MCQs)
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Practice Set for JRF
JRF Social Science (ICAR) Indian Council of Agricultural Research

Wheat

Cultivation of Wheat (Triticum aestivum)

  • Botanical Name: Triticum aestivum
  • Family: Graminae / Poaceae
  • Chromosome Number: 2n = 42
  • Origin: Southwest Asia (Turkey)
  • Inflorescence: Ear or spike
  • Seed: Caryopsis
  • Test Weight: 40 grams (Phalaris minor test weight: 2 grams)
  • Fruit Type: Caryopsis
  • Photosynthetic Pathway: C3
  • Day Length Requirement: Long-day plant
  • Protein Content: 8-11%
  • Shelling Percentage: 60%

 

General Information
  • Wheat is the king of cereals, ranking first in both area and production worldwide.
  • It contains gluten, a spongy protein essential for baking.
  • The Perling Index in wheat determines the grain’s hardness.
  • Clonal roots develop at the crown root initiation (CRI) stage, below the soil surface after the first leaves appear.
  • Wheat is commonly intercropped with mustard.
  • The gene responsible for dwarfness in wheat, Norin-10, was discovered by Dr. Borlaug in 1960 in Mexico and was instrumental in the Green Revolution in India.
  • The flowering portion of wheat is called the spike or ear.
  • Non-traditional areas for wheat cultivation in India include West Bengal (Northeast India).

 

Classification of Wheat

Common Bread Wheat (Triticum aestivum):

  • Hexaploid (2n = 42), the most widely grown type, accounting for 87% of wheat area in India.
  • Good for chapati and bakery products.
  • Introduced to India by Dr. Borlaug as Mexican dwarf wheat, leading to the Green Revolution.

 

Durum/Macaroni Wheat (Triticum durum):

  • Tetraploid (2n = 28), used for suji and semya.
  • Occupies 12% of India’s wheat area, mainly in Central and Southern India under rainfed conditions.
  • Notable varieties: Jairaj, Malavika.

 

Emmer Wheat (Triticum diccocum):

  • Tetraploid (2n = 28), occupies 1% of wheat area, primarily in Gujarat, Maharashtra, Andhra Pradesh, Karnataka, and Tamil Nadu.
  • Used for Uppumav (South Indian dish).

 

Diploid Species:

  • Triticum monococcum (2n = 14)
  • Triticum aegiloploid (2n = 14)

 

Area and Production (India)
  • Area: Uttar Pradesh > Madhya Pradesh > Punjab
  • Production: Uttar Pradesh > Punjab > Haryana
  • Productivity: Highest in Punjab (45 q/ha), mainly due to irrigation and higher fertilizer application.

 

Critical Stages for Irrigation
  1. Crown Root Initiation (CRI): Occurs 21 days after sowing, the most critical stage for irrigation.
  2. Tillering Stage: Up to 40-45 days after sowing.
  3. Jointing Stage: Up to 60-65 days after sowing.
  4. Flowering (Booting) Stage: Up to 80-85 days after sowing.
  5. Milking Stage: Up to 100-105 days after sowing.
  6. Dough Stage: Up to 115-120 days after sowing.

If only one irrigation is available, apply it at CRI stage. For two irrigations, apply them at CRI and flowering stages.

 

Climate Requirement
  • Germination Temperature: 20-25°C
  • Vegetative Growth: Cool and moist weather.
  • Grain Formation: Warm and dry weather.

 

Varieties of Wheat
  • Dwarf Varieties:
    • Single Gene Dwarf: Lerma Rojo 64-A, Sujata, Girija, Sonalika (developed from HD 1553 and RR 21).
    • Double Gene Dwarf: Kalyan Sona, Sonaro-64, Chhoti Lerma, HD-2009 (Arjun), HD-2329, Janak.
    • Triple Gene Dwarf: Heera, Moti, Lal Badshah (developed in 1970).
    • Mutant Varieties: Sharbati Sonora (from Sonoro 64), Pusa Lerma (from Lerma Rojo 64-A).
    • Other popular varieties: Sujata, Shailaja, Malavia-12, PBW-502.

 

Seed Rate
  • Normal Sowing: 100 kg/ha
  • Late or Broadcasting: 125 kg/ha
  • Dibbling: 25-30 kg/ha

 

Spacing
  • Irrigated Wheat: 22.5 x 10 cm spacing
  • Sowing Time: Best time for sowing is the 1st fortnight of November, while rainfed wheat is sown in the 2nd fortnight of October.

 

Fertilizer Requirement
  • Nitrogen: 120 kg/ha
  • Phosphorus: 60 kg/ha
  • Potash: 40 kg/ha

Under rainfed conditions, a thiourea spray (0.5%) can enhance yield by 10-15%.

 

Weed Management
  • Monocot Weeds:
    • Phalaris minor (mimicry weed): Control with Isoproturon (0.75 kg/ha) at 30-35 days after sowing.
    • Avena fatua (wild oat): Control with Tribunil (banned in India) or Sulfosulfuron (20 g/ha) or Metasulphuron (4 g/ha).

 

  • Dicot Weeds:
    • Chenopodium album, Anagallis arvensis, Melilotus spp.
    • Control with 2,4-D Eater Salt (500 ml/ha) as a post-emergence herbicide at 30-35 DAS.
    • Objectionable Weed: Convolvulus arvensis.
  • Rice in wheat: Example of a relative weed.

 

Storage
  • Safe Moisture Content: 10-12%
  • Harvesting Moisture Content: 20-30%

 

Intercropping
  • Wheat + Mustard Intercropping: Recommended ratio 9:1.
  • Biofertilizer: Azotobacter is used for wheat

 

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