COMPOSTING - A METHOD TO INCREASE THE AVAILABILITY OF PHOSPHORUS OF LOCAL ROCK PHOSPHATE
The results of fractional analysis of local rock phosphate showed that in the natural state, fractions greater than 1 and 10 mm predominate. The Arrenius method proved to be more effective in determining the available phosphorus in the rock phosphate in Tajikistan. Composting of rock phosphate with manure is the most effective way to increase the availability of phosphorus to crops. Local rock phosphate is more suitable for saline soils with sulphate type of salinity compare with chloride and chloride-sulfate type of soil salinity.