TY - GEN AU - Singh; S.S. TI - Principles and practices of agronomy SN - 8176638587 U1 - 630.1 PY - 1988/// CY - New Delhi PB - Kalyani KW - AGRONOMY KW - SeedAssessment of soil fertilityCrop planning and budgetingWater management of cropsWeeds and their controlCrop identification and judgingTillageSoil conservationAcronyms ER -