Evaluation of suitable extractant of boron in soil of Manipur

Abstract

A pot experiment was conducted during 2018-2019 with thirty number of soil samples having different soil characteristics for evaluating the suitability of extractants in soils of Bishnupur distric taking cauliflower as a test crop. Five different extractants such as hot 0.01 calcium chloride, hot water, Mehlich-3, 0.1M salicylic acid and 1.0M of ammonium acetate were used for extracting the soil boron. In terms of efficiency of boron extraction, the extractants followed the order in decreasing trend as Mehlich-3 (M3) Eƒ hot 0.01M Calcium Chloride (HCC) Eƒ hot water (HW) Eƒ0.1M salicylic acid (SA) Eƒ 1.0M ammonium acetate (AA). Among the extractants, hot 0.01M Calcium Chloride recorded the highest correlation with Bray’s percent yield, dry matter yield, B concentration at control and B uptake at control.