Correlation studies between soil physical and physico-chemical characteristics and available soil nutrients of maize crop grown in Chittoor District of Andhra Pradesh

A survey was undertaken to study the correlation between soil physical and physico-chemical characteristics and available soil nutrients of maize crop grown in Chittoor district of Andhra Pradesh. In Alfisols, available N was positively and significantly correlated with silt content, bulk density and organic carbon while available S was positively and significantly correlated with pH and EC. In Inceptisols, available N was negatively and significantly correlated with sand content whereas positively and significantly correlated with silt and organic carbon content. Further, the available Mn was positively and significantly correlated with bulk density. In Vertisols, available N was positively and significantly correlated with sand and organic carbon. Available Ca and Mn were positively and significantly correlated with clay content and pH whereas negatively and significantly correlated with sand content and EC. Further, available S was positively and significantly correlated with EC.