TY - GEN AU - REDDY, S R TI - PRINCIPLES OF AGRONOMY U1 - 630 RED/PR CY - LUDHIANA, KALYANI KW - AGROMETEOROLOGY KW - CROPPING SYSTEMS KW - MINERAL NUTRITION KW - SOIL KW - SUSTAINABLE AGRICULTURE KW - TILLAGE KW - WATER CONSERVATION KW - WEED MANAGEMENT ER -