Some soil parameters of shrimp culture ponds of Karapa, Kogodu and Atchutapuratrayam villages of East Godavari district, Andhra Pradesh

Abstract

The soil composition and other sediment characteristics like pH, organic carbon, phosphates and nitrogen were estimated in the shrimp culture ponds of Karapa, Kogodu and Atchutapuratrayam villages of East Godavari district of Andhra Pradesh were studied. The soil pH ranged from 6 to 7 at Atchutapuratrayam ponds and 6.5 to 7.5 at those of Karapa and Kogodu villages. The percentage of sand, silt and clay varied from 24 to 31%; 28 to 40% and clay 30 to 50% respectively. The percentage of organic carbon was low (0.5-1.0%) at Kogodu and Atchutapuratrayam ponds and high (1.5-2.0%) in ponds of Karapa. Phosphates ranged from 1 mg/l (Atchutapuratrayam village) to 4 mg/l (Karapa village and Kogodu village). Nitrogen levels varied from 37.0 mg/l (Atchutapuratrayam village) to 113.8mg/l (Karapa village).