Agronomy Facts For Competition By Rs Meena Pdf 2021 |link| -

Agronomy Facts For Competition By Rs Meena Pdf 2021 |link| -

"Agronomy Facts for Competitions" by R.S. Meena is a comprehensive 2021 resource tailored for agricultural exams like ICAR JRF and NET, providing essential data across agronomy branches. The guide covers key areas including soil health, crop management, and historical agricultural milestones, along with solved practice papers. Purchase options and further details can be found on Amazon India

3. Weed Science Basics

  • Critical period of weed competition (most crops): 15–45 DAS
  • Weed control efficiency (%) = [(WDC – WDT) / WDC] × 100
    (WDC = weed dry weight in control, WDT = weed dry weight in treatment)
  • Herbicide selectivity based on:
    • Physical (placement, time)
    • Biochemical (metabolism in crop vs. weed)

7. Growth & Development Terms

  • Phyllochron – Interval between appearance of successive leaves (e.g., wheat: 75–100 °Cd)
  • Heat units (GDD) = [(Tmax + Tmin)/2] – Tbase
  • Vernalization – Cold requirement for flowering (wheat, rabi cereals)
  • Photoperiodism:
    • SDP (short day): Rice, soybean, tobacco
    • LDP (long day): Wheat, spinach, radish

Why “Agronomy Facts for Competition” is a Game-Changer

Agronomy, the backbone of agriculture, is the science of crop production and soil management. It is also the highest-scoring section in most agricultural competitive exams. However, the syllabus is vast—covering everything from cropping patterns and irrigation management to weed control and sustainable farming. agronomy facts for competition by rs meena pdf 2021

Dr. R.S. Meena’s Agronomy Facts for Competition (2021 edition) distills this vastness into a high-yield, point-wise format. Here’s why aspirants chase this specific PDF: "Agronomy Facts for Competitions" by R

  1. Exam-Oriented Condensation: The book avoids lengthy theory. Instead, it presents information as "facts" – quick, memorizable statements, tables, and comparative analyses that directly appear in multiple-choice questions (MCQs).
  2. Latest Data (as of 2021): The 2021 edition includes updates on government schemes, new crop varieties (HYVs), recommended doses of fertilizers (RDF), and the latest statistics on land use and production, which are crucial for exams held in subsequent years.
  3. Competition-Specific Layout: It categorizes facts under traditional agronomy, cropping systems, irrigated and dryland agriculture, and problem soils, mirroring the question pattern of exams like FCI, NABARD, and State PSCs.

2. Soil & Water Management

  • Field Capacity (FC) – Water held against gravity (0.33 bar / -33 kPa)
  • Permanent Wilting Point (PWP) – Water unavailable to plants (15 bar / -1500 kPa)
  • Available Water Capacity (AWC) = FC – PWP
  • Water Use Efficiency (WUE) = Yield (kg/ha) / Water used (mm or m³)
  • Critical stages for irrigation:
    • Rice: Panicle initiation, flowering
    • Wheat: CRI (21–30 DAS), flowering
    • Maize: Tasseling, silking
    • Groundnut: Flowering, peg penetration