Spatial Distribution and Mapping of Available Micro Nutrient Status in Relation to Soil Properties of Tomato Grown Soils of Chikkaballapura District, Karnataka
P. N. Siva Prasad, C. T. Subbarayappa, A. Sathish
International Journal of Plant & Soil Science · pp. 1–10 · Published 8 Aug 2020
10.9734/ijpss/2020/v32i1030331Abstract
GPS based soil survey was conducted in the tomato growing areas of Chikkaballapura district, Karnataka to map the soil fertility status by using Arc GIS 10.4 software. Seventy five surface soil samples were taken from the tomato growing areas of the district and analysed for texture, pH, EC, OC and micronutrients (Zn, CU, Fe, Mn, B) and zinc content in plant samples. The results revealed that the soils under investigation were acidic to alkaline in reaction, non saline, medium to high in organic matter content. All the studied soils were sandy loam to sandy clay loam in texture. DTPA extractable Zn, Cu, Fe, Mn and HWS-B varied from 0.07 - 6.87, 0.41-4.59, 2.08-28.92, 1.37-27.08 and 0.24-2.13 mg kg-1 respectively. Plant zinc ranges from 14 - 98 mg kg-1 inferring low to high in zinc concentration. The nutrient index was calculated for all the micronutrients and it is found to be medium. Among the micronutrients 48, 21.33 and 30.67 per cent samples were categorized as low, medium and high in available zinc status. These results indicated that Zn is likely to constraint tomato crop production in Chikkaballapura.
Cited by 3
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