Vol. 11, Issue 2 (2022)

Author(s):
Suraj Mali and Sanjay Tiwari

Abstract:
Sodic soils have immense productivity potential, if managed through proper technology interventions. Bio-compost is prepared by composting pressmud (a sugar industry byproduct) received from cane juice filtration and spent wash received from distilleries through microbial aerobic decomposition and gypsum received from waste material of mining can be used to reclaim sodic soils and increase nitrogen availability in soils. A field experiments were carried out during Kharif seasons 2018 & 2019 at ICAR - Indian Agricultural Research Institute, Sub Regional Station, Pusa (Samastipur), Bihar. Our objective was to study the increase availability of nitrogen & uptake by genotypes under sodic soils. The results obtained from the present investigation revealed that the mean of soil reaction (pH) of all genotypes ranged from 9.10 to 9.23 during 2018 and 9.01 to 9.11 during 2019. Available nitrogen of all the genotypes ranged between 161.62 to 172.67 kg ha^-1 in the first year while in the second year it ranged between 163.89 to 174.16 kg ha^-1. The mean nitrogen uptake in grain of the genotypes varied between 28.69 kg ha^-1 to 44.09 kg ha^-1 during 2018 and 30.85 kg ha^-1 to 44.43 kg ha^-1 during 2019. The nitrogen uptake in straw of the genotypes varied between 11.49 kg ha^-1 to 18.07 kg ha^-1 in the first year while in the second year it varied between 11.76 kg ha^-1 to 17.99 kg ha^-1.