Vol. 13, Issue 2 (2024)

Author(s):
Anusha KN, Shankar Meti, Manjunath Rathod, Muttavva Awaradi and Yadava Radhika

Abstract:
Slag based gypsum (SBG) is a synthetic gypsum which is alkaline in nature, its high calcium and magnesium content serve as soil conditioner by improving the soil physical and chemical properties particularly in deep black and alkaline soil. In this study, we evaluated the effect of SBG on soil chemical properties and macro nutrients over gypsum. Field experiments were conducted by taking French bean (phaseolus vulgaris L.) as test crop and experiment contains 10 treatments which include four levels of SBG and natural gypsum (150, 300, 450 and 600 kg ha^-1) applied as basal. Application of SBG @ 600 kg ha^-1 recorded significantly decreased (7.56 and 8.02 respectively) soil pH and exchangeable sodium percentage and significantly higher electrical conductivity (0.49 dS/m) resulting in improving soil chemical property compared to control and RDF alone. Availability of macronutrients increased with the increasing rate of SBG and gypsum application except nitrogen and phosphorous.