Agronomy is often defined as the art and science of crop production and soil management. It focuses on optimizing the use of resources to achieve sustainable yields.
Weeds compete with crops for light, nutrients, and space. R.S. Meena’s guides provide detailed classifications of herbicides. agronomy facts for competition by rs meena pdf
Classification of WeedsNoxious weeds: Hard to control and highly invasive (e.g., Parthenium).Objectionable weeds: Weeds whose seeds are difficult to separate from crop seeds (e.g., Argemone mexicana in Mustard). Agronomy is often defined as the art and
By Economic UseCereals: Rich in carbohydrates (Rice, Wheat).Pulses: The main source of protein for vegetarians (Chickpea, Pigeon pea).Oilseeds: Grown for fatty acids (Groundnut, Soybean, Mustard).Cash Crops: Grown for profit rather than subsistence (Sugarcane, Tobacco, Cotton). Water Management and Irrigation By Economic UseCereals: Rich in carbohydrates (Rice, Wheat)
Irrigation SchedulingThe Critical Stage approach is vital. For wheat, the Crown Root Initiation (CRI) stage (21 days after sowing) is the most critical time for irrigation.Drip irrigation offers the highest water use efficiency (up to 90%).