Available nutrient status in rice growing soils of various Mandals in Krishna District

Abstract

A study was conducted to assess the fertility status of rice growing soils in various mandals of Krishna District in Andhra Pradesh during 2017-18. A total number of 105 soil samples (0-25 cm) were collected and were analysed for different chemical properties. Majority of the soils are sandy clay loam in texture and with neutral to slightly alkaline reaction and non saline in nature. Soils were low to medium in organic carbon and deficient with respect to available Nitrogen. High in available P and medium to high in available K and sufficient in available sulphur and DTPA extractable micronutrients like iron, manganese, zinc and copper. Simple correlation studies revealed that N, P, K and S were positively and significantly correlated with organic carbon. There was a negative correlation between pH and available P& Zn and highly significant negative correlation was also observed between pH and micro nutrient like Fe and Mn. Negative correlation was also observed between available P and Zn.