000			01327nam a2200157Ia 4500
008			220216s9999 xx 000 0 und d
100			_aKaleeswari R K
245		0	_aAssessment of sulphur and micronutrients status in soils of Northern Villupuram district, Tamil Nadu using GIS technique
260			_bAgropedology _c2012
300			_a96-102
520			_aSurface soil samples (0-0.14m) were collected from 1791 locations in northern Villupuram district, Tamil Nadu using GPS. The soil samples were analysed for available sulpher and micronutrients. Available sulphur content varied from 1.25 to 198.75 mg kg-1 with the mean value of 48.64 mg kg-1. The DTPA extractable micronutrients (Fe, Zn, Mn, Cu and hot water soluble boron) content varied from 0.22 to 39.40 mgkg-1, 0.19 to 4.94 mgkg-1, 0.10 to 9.38 mgkg-1, 0.10 to 4.48 mgkg-12 and 0.30 to 4.50 mg kg-1, respectively. Available sulphur was found to be deficient in 1.17 per cent, DTPA-Zn in 84 per cent, DTPA-Cu in 39.8 per cent, DTPA-Mn in 50.1 per cent and DTPA-Fe in 53.4 per cent surface samples, respectively. The highest available sulphur (66.97 mg kg-1) was recorded in the Melmalayanur block. The available boron was high in 87.2 per cent of the soil samples.
650			_aDTPA extractable micronutrients
650			_aGIS
650			_aGPS
942			_cJS
999			_c54552 _d54552