Spatial Distribution and Mapping of Available Micro Nutrient Status in Relation to Soil Properties of Tomato Grown Soils of Chikkaballapura District, Karnataka

Abstract

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.

Quantifying and Mapping of Major, Secondary and Micronutrient Status of Tomato Growing Soils in Kolar District, Karnataka Using GIS and GPS Approach

“…For macronutrients these results are in conformity with the findings of Verma et al [29] for soils of Punjab. For micronutrients the results are in conformity with the findings of Kumar et al [30] and Prasad et al [17] at Jhabua district of Madhya Pradesh and Chikkaballapura district of Karnataka. Verma et al [29] reported that there is low nutrient index for N and Zn, high nutrient index for P, Cu, Fe and Mn and medium availability for K in major sugar cane growing soils of Punjab.…”

“…The results are in conformity with the finding of Shukla [23] in soils of Pamgarh block in Janjgir-Champa district (C.G.). Similar findings were also reported by Prasad et al [17] in tomato growing soils of Chikkaballapura district of Karnataka.…”

“…The high temperature prevailing in the area was responsible for the rapid burning of organic matter, thus resulting in medium organic carbon content of these soils. These results are in confirmatory with results reported by Sathish et al[16] and Prasad et al[17].…”

“…Available Fe content in soils of Kolar might be due to its topography and amount of iron required by crops is being released by iron bearing minerals. Similar trend of Fe was reported by Prasad et al[17] in soils of Chikkaballapura district of Karnataka.The Mn status of district ranged from 0.66 to 21.72 mg kg -1…”

Impact of Zinc Fertilization on Tomato (Solanumlycopersicum L.) Yield, Zinc use Efficiency, Growth and Quality Parameters in Eastern Dry Zone(EDZ) Soils of Karnataka, India

“…To overcome these problems foliar spray and soil application are being recommended but it is not a crop specific or soil specific recommendation. The tomato -growing soils in Karnataka are very much deficient in zinc [2,3]. Keeping the above facts in view the present study was under taken.…”