Soil Chemistry of Erravagu Sub-basin of Guntur District, Andhra Pradesh

Abstract

To identify the fertility status of soil in Erravagu sub-basin, soil samples were collected particularly in Reddigudem and Nekarikallu villages of Guntur District, Andhra Pradesh.About thirty four soil samples were collected covering the entire study area laterally (15 cm to 30 cm (depth)) and vertically (0-120 cm (depth)). The study area consists of both red and black soils which are moderate to strong alkaline in nature and non-saline. On the soil complex the dominant cation is calcium. The physical properties were normal as the Bulk Density was normal. The Water Holding Capacity of the soils is high. The overall fertility status of the soils was low, medium and high in nitrogen, phosphorus and potassium respectively. As the soils were calcareous and strongly alkaline, there is need for application of any acid forming amendment(S containing amendments) and organic materials to alleviate the nutrient deficiency and improve productivity.