INFLUENCE OF ROCK PHOSPHATES WITH AND WITHOUT VEGETABLE COMPOST ON THE YIELD, PHOSPHORUS AND CADMIUM CONTENTS OF RICE (ORYZA-SATIVA L) GROWN ON AN ULTISOL

Greenhouse pot culture experiments conducted to evaluate the yield, P and Cd contents of rice (Oryza sativa L.) grown as a second crop on an Ultisol repeatedly fertilized with three Indian rock phosphates with and without addition of vegetable compost indicated that Mussoorie roc k phosphate was significantly superior to other two rock phosphates in enhancing the dry matter yields of rice crop. Vegetable compost addit ion significantly enhanced the yields and P concentration of rice plan t tissue. Cadmium contents of rice grain was more than that of rice sh oots. In general, incorporation of vegetable compost effectively reduc ed the Cd contents of both shoots and grain of rice crop.