Journal of FARM SCIENCES, Vol 25, No 3 (2012)

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Mapping of nutrients status by geographic information system (GIS) in Mantagani village under northern transition zone of Karnataka

H.B.P. Pulakeshi, P.L. Patil, G.S. Dasog, B.M. Radder, B.I. Bidari, C.P. Mansur

Abstract


A study was conducted to assess available nutrient status of soils of Mantagani village in north Karnataka by GIS technique. One hundred fifteen samples (0-30 cm) drawn from the farmers’ fields were analysed for their fertility status and mapped by geographic information system (GIS) technique. The pH of soil samples was slightly acidic to alkaline. Soil organic matter content was low. Available nitrogen (low; 93% area), phosphorus (low; 24% area, Medium; 76% area) was generally low to medium and available potassium and sulphur were low to high. Regarding available micronutrients, zinc and iron were deficient (88% and 72 % area, respectively) where as, copper and manganese were deficient 54% and 51% area, respectively) to sufficient in these soils.

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