National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Soil properties are sensitive to changes in the soil environment as influenced by vegetation, climate and inputs and losses of biomass and nutrients. Thus, the cropping systems with different management practices are likely to influence soil properties. Grid based soil survey was conducted in Mudhol to compare the soil fertility status of three major cropping systems namely, sugarcane, groundnut-maize/onion and cereal-pulse systems. Surface composite soil samples representing 143 grids of 4.86 sq km each were analyzed for available major and secondary nutrients and the factors influencing their availability namely, pH, free CaCO3 and soil organic–C. Among nutrients, available-N, K and S varied significantly among three cropping systems while, available-P, Ca and Mg did not vary significantly. Variations in soil pH as influenced by free CaCO3 might have reduced phosphorus availability. The soil organic-C was found positively correlated with N-availability in soils. Higher amounts of nutrient (except K) in irrigated cropping systems especially, sugarcane system may be attributed to nutrient and water management practices and high biomass turnovers. Less utilization of soil-K may be the reason for higher K-availability in cereal-pulse cropping systems.
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