Vol. 6, Issue 4 (2018)
Evaluation of critical limits of potassium in soil for upland paddy grown on shrink-swell soils
Author(s): SR Shinde, DS Patil and GD Sakore
Abstract: The critical limits of potassium in soil for upland paddy was determined through a pot culture experiment with shrink-swell soils. The samples of eighteen different locations were collected having low (<125 kg K2O ha-1), medium (125-250 kg K2O ha-1) and high (>250 kg K2O ha-1) potassium status. The present investigation was carried out in Factorial Completely Randomized Design with two treatments (viz. 0 and 50 kg K2O ha-1) and two replications. The paddy crop was harvested at 100 per cent flowering. The critical limits of potassium in soil were worked out according to method of Cate and Nelson (1965 and 1971). The critical limit of potassium in soil for paddy plant was found 264.22 kg K ha-1 by graphical method of (Cate and Nelson, 1965) and 268.80 kg K ha-1 by statistical method of (Cate and Nelson, 1971), respectively. The results indicated that, soil containing less than 268.80 kg K ha-1 potassium at 100 per cent flowering, respond to application of potash fertilizers.
Pages: 1314-1317 | 695 Views 315 Downloads
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How to cite this article:
SR Shinde, DS Patil, GD Sakore. Evaluation of critical limits of potassium in soil for upland paddy grown on shrink-swell soils. Int J Chem Stud 2018;6(4):1314-1317.
