Efficient water use is a recurring theme in modern agronomy.
Normal agricultural soils have a bulk density of 1.02 to 1.60
The book systematically covers the full spectrum of agronomy, aligning with major competitive exam syllabi. The 5th edition is particularly noted for its comprehensive updates.
Extends up to 50 km. It contains the ozonosphere, which absorbs harmful ultraviolet radiation. The temperature increases with altitude. Solar Radiation Constants
By SeasonKharif Crops: Sown in June-July (e.g., Rice, Maize, Bajra).Rabi Crops: Sown in October-November (e.g., Wheat, Mustard, Gram).Zaid Crops: Sown in March-June (e.g., Watermelon, Cucumber). agronomy facts for competition by rs meena pdf
: Sown in October–November (winter) and harvested in spring. Requires cold, dry conditions during growth (e.g., Wheat, Barley, Mustard, Gram).
Iron (Fe), Manganese (Mn), Zinc (Zn), Copper (Cu), Boron (B), Molybdenum (Mo), Chlorine (Cl), Nickel (Ni). Indicator Plants for Nutrient Deficiencies Nitrogen: Cauliflower, Maize. Phosphorus: Mustard. Potassium: Potato, Alfalfa. Iron: Sorghum, Sugarcane. Boron: Sunflower. Quick Fertilizer Calculations
Whether you are aiming for the ICAR JRF or the IBPS AFO mains, ensure this book is on your desk. Combine the facts from this book with conceptual understanding from standard texts, and you will be well on your way to cracking your dream exam.
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Measurement TermsConsumptive Use (CU): The total water used for transpiration and evaporation.Field Capacity: The amount of soil moisture held in the soil after excess water has drained away. Weed Science and Protection
Soil fertility management directly influences crop productivity. Mastery over essential nutrients, fertilizer calculations, and soil physical properties is mandatory for clearing agricultural entrance exams. Essential Plant Nutrients
Areas receiving less than 750 mm of annual rainfall. Crop failures are common due to prolonged dry spells.
Propounded by Arnon and Stout (1939) and refined by Arnon (1954). Classification: Extends up to 50 km
Weeds compete with crops for light, nutrients, water, and space, accounting for significant yield losses. Important Weed Facts
The critical stage for irrigation is the stage, which occurs 21 days after sowing (DAS). Semidwarf wheat varieties carry the Norin-10 dwarfing gene. Maize ( Zea mays ) :
The chemical inhibition of one plant by another due to the release of metabolic substances (allelochemicals). Example: Sorghum stubble inhibits subsequent wheat growth.