UNIT -7 Plant ideotypes, crop rotation and its principles, adaptation and distribution of crops, crop management technologies in problematic areas.
UNIT-5 Weeds – importance, classification, crop weed competition, concepts of weed management principles and methods
UNIT- 4 Irrigation, Irrigation scheduling criteria and methods, quality of irrigation water, water logging
UNIT-3 Water resources,Role of Water in Plants, soil plant water relationship, crop water requirement, water use efficiency
UNIT -2 Crop nutrition, manures and fertilizers, nutrient use efficiency, Classification of crops, Agroclimatic zones