Effect of long term application of inorganic and organic fertilizers on soil micronutrient status

Soil micronutrients were studied on Inceptisol with an 16-years old experiment at Regional Agricultural Research Station, Professor Jayashankar Telangana State Agricultural University, Jagtial in rice – rice cropping system. The present study was undertaken during kharif, 2016 and results indicated that continuous application of chemical fertilizers and manures increased the micronutrient availability in soil. Application of 100% NPK + Zn over a period of 16 years significantly increased the Zn content in soil by 37.8% as against 100% NPK treatment. Continuous application of FYM (100% FYM) recorded highest Mn content of 7.75 mg kg-1in soil.