An evaluation of vertical distribution of available potassium and sulphur by use of different extractants in soils of Dubahar block of Ballia district U.P., India

Abstract

An investigation was carried out for depth vise distribution of different forms of available potassium and sulphur in soils of Dubahar block of Ballia district was by collection of depth-wise soil samples from two different village’s viz. Nagava and Dubahar by use of standard method. Soil samples from both villages expess that soil pH ranges from 6.5-7.7, EC 1.001-1.004 dSm-1, organic carbon 0.03-0.40 % and by use of different extractants for available K and S viz. NH4OAc extractable – K 169.2 - 347.2 kg ha-1, 0.01 M CaCl2.2H2O extractable – K 78.2 -152.6 kg ha-1, EDTA extractable – K 66.8 -116.6 kg ha-1, water soluble – K 160.2 – 214.0 kg ha-1, HNO3 extractable – K 186.0 - 288.0 kg ha-1, Mehlich III extractable – K 65.2 -128.0 kg ha-1, and 1 M NaCl extractable – K 95.0 -160.0 kg ha-1, and amount of CaCl2 extractable –S was 5.0 – 6.3 mg kg-1, NaHCO3 extractable – S 4.8 – 5.2 mg kg-1, KCl extractable – S 4.0 - 5.2 mg kg-1, HCl extractable – S 2.3- 3.0 mg kg-1 , Morgan’s reagent extractable – S was 6.0- 6.8 mg kg-1 respectively