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VOL. 8, ISSUE 4 (2026)
Studies on soil nutrient constraints in groundnut growing soils of Kudligi Taluk, Vijayanagara district of Karnataka
Authors
Sandeep H, Manjunatha Bhanuvally, Ravi S, Shreenivas B V, Sunitha N H
Abstract
Soil nutrient availability is an important
factor influencing groundnut productivity, particularly in rainfed production
systems. The present investigation assessed the soil nutrient status of
groundnut-growing soils in Kudligi taluk of Vijayanagara district of Karnataka.
Sixty surface soil samples (0-30 cm) were collected from eight selected
villages: Kanahosahalli, Poojarahalli, Badaladaku, Shivapura, Gudekote,
Chikkajogihalli, Appenahalli and Moraba. Soil samples were analysed for pH,
electrical conductivity (EC), organic carbon, available nitrogen, phosphorus
and potassium and DTPA-extractable iron, manganese, copper and zinc. Soil pH
ranged from 6.43 to 8.68, while EC ranged from 0.05 to 0.86 dS m⁻¹, indicating
that the soils were non-saline. Organic carbon ranged from 0.12 to 0.98 per
cent, with a reported mean of 0.51 per cent. Available nitrogen, phosphorus
(P₂O₅) and potassium (K₂O) ranged from 100.26 to 390.51, 15.65 to 35.97 and
127.65 to 385.26 kg ha⁻¹, respectively. Among the micronutrients, DTPA-extractable
Fe, Mn, Cu and Zn ranged from 7.31 to 34.48, 2.10 to 23.80, 1.02 to 2.76 and
0.01 to 1.27 mg kg⁻¹, respectively. The very low zinc value at Chikkajogihalli
indicated a potential micronutrient constraint, while low organic carbon and
nitrogen were important concerns in parts of the study area. The findings
highlight the need for soil-test-based nutrient management, organic matter
improvement and zinc application where deficiency is confirmed.
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Pages:228-232
How to cite this article:
Sandeep H, Manjunatha Bhanuvally, Ravi S, Shreenivas B V, Sunitha N H "Studies on soil nutrient constraints in groundnut growing soils of Kudligi Taluk, Vijayanagara district of Karnataka". International Journal of Ecology and Environmental Sciences, Vol 8, Issue 4, 2026, Pages 228-232
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