Agronomy Facts For Competition By Rs Meena: Pdf 2021

High-Yield Agronomy Facts for Competitions

Step 4: Revision through Mnemonics

The PDF provides raw data. Your job is to create mnemonics.

• Example for crops & their CDC (Critical Deficit Days): "Wheat CRI, Maize Tassel, Rice Panicle" – memorize as "W-M-R: 1-2-3."

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

Step 3: Interlink with Mock Tests

After memorizing a section (e.g., Crop Ecology), take an MCQ test. Any fact you get wrong, go back to the PDF and highlight it in red. The 2021 edition is particularly useful because its facts align closely with question banks of that era. agronomy facts for competition by rs meena pdf 2021

🔰 Top Agronomy Facts for Competitive Exams (Based on Standard Syllabi)

6. Weed Science

Weed management is a high-scoring area in competitions. The facts are typically organized by weed type and herbicide chemistry. High-Yield Agronomy Facts for Competitions Step 4: Revision

• Definition: A plant growing where it is not wanted.
• Classification:
  • Narrow Leaf: Grasses (e.g., Cynodon dactylon - Doob grass) and Sedges (e.g., Cyperus rotundus - Motha).
  • Broad Leaf: Dicotyledonous weeds (e.g., Parthenium hysterophorus - Congress grass).
• Herbicides:
  • Pre-emergence: Applied before weed emergence (e.g., Atrazine, Butachlor).
  • Post-emergence: Applied after crop/weed emergence (e.g., 2,4-D, Isoproturon).
  • Selective: Kills specific weeds without harming the crop.
• Weed Control Methods: Preventive, Cultural, Mechanical, Chemical, and Biological (e.g., use of Zygogramma bicolorata for Parthenium).

1. Historical Milestones in Agronomy

A significant portion of the text is dedicated to the history of Indian agriculture, a common source of objective questions. Key facts typically highlighted include: Example for crops & their CDC (Critical Deficit

• First Agricultural Revolution: Neolithic Revolution (around 10,000 BC).
• Green Revolution in India: Initiated in 1966; synonymous with the introduction of High Yielding Varieties (HYVs).
• Father of Green Revolution in India: Dr. M.S. Swaminathan.
• Father of Green Revolution (World): Norman Borlaug.
• Father of Tillage: Jethro Tull.
• First Agricultural University: Govind Ballabh Pant University of Agriculture and Technology (Pantnagar), established in 1960.
• Indian Council of Agricultural Research (ICAR): Established in 1929; headquarters in New Delhi.

2. Tillage and Soil Management

The text categorizes tillage not just as a practice, but as a science of soil manipulation.

• Tillage Definition: The mechanical manipulation of soil to provide favorable conditions for crop growth.
• Types of Tillage:
  • Primary Tillage: Deep ploughing (e.g., Mould Board Plough).
  • Secondary Tillage: Shallow operations to break clods and prepare seedbeds (e.g., Harrowing, Cultivating).
• Zero Tillage: A method where the soil is left undisturbed; seeds are directly sown into the untilled soil. This is crucial for conservation agriculture.
• Pan Formation: Formation of a hard layer in the subsoil due to excessive tillage or heavy machinery; broken by subsoilers (Chiseling).