Книга: P. Ravikumar,K.L. Prakash and R.K. Somashekar «Appraisal of Nutrient Index to assess Soil fertility of farming lands»

Appraisal of Nutrient Index to assess Soil fertility of farming lands

Производитель: "LAP Lambert Academic Publishing"

Soil samples collected from four river basins in Karnataka were characterized for different physical and chemical parameters namely pH, EC, Organic carbon, Exchangeable cations (Ca2+, Mg2+, Na+, K+), Available nutrients (N,P,K), Cation exchange capacity, percent base saturation, SAR&ESP. Soil fertility evaluated by calculating Nutrient Index using OC and Available NPK values indicated that the soils of SLIS, SRLIS, Bellary nala and Varahi river basins respectively fall under high-low-low-low (HLLL), medium-low-low-medium (MLLM), high-medium-high-medium (HMHM)&low-low-low-low (LLLL) class. Applying organic wastes as a source of nutrient to the agricultural lands having low to medium %OC and Available nitrogen is required. Soils with low to medium phosphorus could be supplemented by applying phosphorous rich fertilizers as required by a specific crop. Soil samples with deficient and doubtful supply of potassium can be enriched with garden compost holding 0. 48% K2O or vermicompost... ISBN:9783659487767

Издательство: "LAP Lambert Academic Publishing" (2013)

ISBN: 9783659487767

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