TY - BOOK AU - D.K. Prabhuraj AU - M.K. Badiger Department of Soil Science and Agricultural Chemis TI - Effect of phosphorus, sulphur and zinc on yield and composition of sunflower (Helianthus annuus L.) U1 - 630 PY - 1988/// CY - Bangalore PB - University of Agricultural Sciences, Bangalore ER -