Effect of long term fertilization on phosphorous fractions under finger millet-maize cropping sequence.

摘要

A long term field experiment on different doses of graded fertilizers with and without FYM under finger millet-maize cropping sequence is in progress at the Tamil Nadu Agricultural University, Coimbatore, since 1972. The effect of continuous fertilization on soil inorganic Phosphorus (P) fractions was studied after 36 years of cropping cycle on a sandy clay loam soil. Long-term application of 150% NPK increased the soil inorganic P fractions followed by 100% NPK+FYM. But the availability of P is higher in the plots receiving 100% NPK+FYM. The integrated nutrient management significantly increased the availability of the nutrients.