Indian Grassland and Fodder Research Institute, Jhansi, Uttar Pradesh
Visakapatnam, Udaipur, Mussoorie and Laccadive phosphates when mixed with Amjore pyrite in the ratios of 1:0.16, 1:0.2, 1:0.25, 1:0.33, 1:0.5 and 1:1 and applied to a soil of pH 7.8, with the narrowing of the rock phosphate: pyrite mixture ratios, the amount of available soil phosphorus increased. Amongst different indigenous rockphosphates, Laccadive phosphate earth was superior to others.
Rockphosphate, pyrite
