Soil-site suitability for the major crops of Mahanandi mandal in Kurnool District, Andhra Pradesh

摘要

Ten representative pedons were evaluated for their suitability to paddy, groundnut, redgram, sugarcane and sorghum crops in the soils of Mahanandi mandal in Kurnool district, Andhra Pradesh. The soil belongs to Inceptisols and Entisols. The soil-site suitability evaluation revealed that Pedon 1 was highly suitable (S1) for rice, moderately suitable (S2) for groundnut, sorghum, redgram and marginally suitable (S3) for sugarcane. Pedon 2 was highly suitable (S1) for rice and marginally suitable (S3) for crops like groundnut, sugarcane, sorghum and redgram. Pedon 3 was highly suitable (S1) for groundnut and moderately suitable (S2) for sugarcane, sorghum and redgram and marginally suitable (S3) for rice. Pedon 4 was highly suitable for rice, moderately (S2) suitable for groundnut and sugarcane and marginally (S3) suitable for sorghum and redgram. Pedons 6, 9 and 10 were highly suitable (S1) for growing rice, groundnut, sorghum and redgram and marginally suitable (S3) for sugarcane. Pedons 5 and 7 were highly suitable (S1) for growing rice and moderately suitable (S2) for groundnut, sugarcane, sorghum and redgram. Pedon 8 is highly suitable (S1) for growing rice, sorghum and redgram and marginally suitable (S3) for growing groundnut. The soil- suitability classes for major crops can be improved if the corrective limitations (soil fertility characteristics) are altered through soil amelioration measures.