Vol. 5, Issue 6 (2017)
Soil available nutrients status and their indexing in cotton growing areas of South Gujarat
Author(s): SM Bambhaneeya, Amaresh Das, VJ Zinzala and Sonal Tripathi
Abstract:
Available soil nutrients status (N, P2O5, K2O, S and Zn) of irrigated and rainfed cotton growing surface soils (0-22.5 cm) from 11 talukas of South Gujarat comprising Bharuch, Surat and Narmada districts. Total 110 nos. samples were subjected to determination above nutrients with a view to better future management of these soils in achieving higher cotton yield. The results revealed available N, P2O5, K2O, S and Zn ranged from 171.2 to 386.0 kg ha-1, 12.4 to 53.4 kg ha-1, 282 to 1180 kg ha-1, 4.9 to 26.9 ppm and 0.25 to 0.91 mg kg-1, respectively in irrigated soils with mean values of 241.3 kg ha-1, 31.1 kg ha-1, 637 kg ha-1, 14.8 ppm and 0.51 mg kg-1, respectively. However, for rainfed soils, the corresponding values were 127.9 to 298.8 kg ha-1, 7.4 to 42.2 kg ha-1, 281 to 812 kg ha-1, 5.4 to 15.8 ppm and 0.20 to 0.59 mg kg-1, respectively, with mean values of 216.5 kg ha-1, 25.0 kg ha-1, 497 kg ha-1, 9.9 ppm and 0.39 mg kg-1, respectively. With respect to available N, 85.5 and 14.5 per cent soils were ‘low’ and ‘medium’, respectively while, the corresponding values for rainfed soils were 98.2 and 1.8 per cent, respectively. In case of available P2O5 in irrigated areas, 60 and 22 per cent soils exhibited ‘low’ and ‘medium’ status, respectively and in rainfed soils values were 72.7 and 27.3 per cent, respectively. Available K2O status in respective of irrigated and rainfed situations was ‘high’. 20, 72.7 and 7.3 per cent irrigated soils were rated under ‘low’, ‘medium’ and ‘high’ status, respectively in respect to available S and the corresponding data for rainfed soils were 63.6, 36.4 and 0.0 per cent soils respectively. DTPA-Zn in irrigated areas showed 52.7 and 47.3 per cent soils under ‘low’ and ‘medium’ status and in rainfed soils 96.4 per cent under ‘low’ Zn status. Nutrients index for all the nutrients followed the same trends of ‘low’, ‘medium’ and ‘high’ as those of available nutrients status.
Pages: 1717-1724 | 908 Views 146 Downloads
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How to cite this article:
SM Bambhaneeya, Amaresh Das, VJ Zinzala, Sonal Tripathi. Soil available nutrients status and their indexing in cotton growing areas of South Gujarat. Int J Chem Stud 2017;5(6):1717-1724.
