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KHALID AHMADY*, K.V. NAGA MADHURI, P.V.R.M. REDDY AND S. HEMALATA
Department of Soil Science and Agricultural Chemistry, S.V. Agricultural College, ANGRAU, Tirupati, India – 517 502
An experiment on long -term application of fertilizers and manure was initiated in the year 1981 during kharif season at Regional Agricultural Research Station, Tirupati, Andhra Pradesh, India in rainfed groundnut monocropping system. The same experiment was used for the present investigation during kharif, 2018 season, to study the influence of long-term application of fertilizers and manure on soil physico-chemical properties. The experiment has eleven treatments each replicated four times in a randomized block design. The results revealed that the significant decrease in soil pH in all the treatments over initial soil pH. However, the decline was the highest in only N applied treatment and the lowest in FYM and control. The application of fertilizers and manure for 38 years increased the organic carbon content in all the treatments when compared with initial and highest content was with FYM application. Significant changes were not recorded with respect to EC and free lime content. However, ill effects were not find with respect to soil physic-chemical properties with the application of fertilizers and manure for 38 years.
KEYWORDS:
Long-term fertilizers application, Soil pH, EC, organic carbon, Lime content