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- Title
GIS-Based Assessment and Thematic Mapping of Micro-Nutrient (DTPA-Extractable, Fe, Zn, Cu and Mn) status in Honnavalli Micro - Watershed of Hassan District of Karnataka.
- Authors
BIRADAR, BASAVARAJ; JAYADEVA, H. M.; SHIVARAJ, S.; GEETHA, K. N.
- Abstract
The study was undertaken at Honnavalli micro-watershed of Hassan district during 2018-19 in order to assess the soil fertility status and to prepare the soil fertility and fertilizer recommendation mapping for sustainable production of major crops viz., paddy, maize, ragi and chilli cultivated in the study area. The 105 grid soil samples were drawn over an area of 420 ha of the study area and analysed for DTPA- extractable micronutrients (Fe, Zn, Cu and Mn). The results revealed that overall, in Honnvavalli micro-watershed, micronutrients, Cu and Mn were foundin sufficient range. The 80 per cent of area (336 ha) found Fe in sufficient rangeand remaining 20 per cent (84 ha) was deficient. The 33 per cent of area (140 ha) found Zn in sufficient range while, remaining 67 per cent (280 ha) was deficient. The surface soil fertility maps of DTPA-extractable micronutrients (Fe, Zn, Cu and Mn) were prepared on the basis of soil fertility ratings through ArcGIS.
- Subjects
SOIL fertility; MICRONUTRIENTS; GEOGRAPHIC information systems; THEMATIC maps; AGRICULTURAL productivity
- Publication
Mysore Journal of Agricultural Sciences, 2020, Vol 54, Issue 4, p45
- ISSN
0047-8539
- Publication type
Article