Influence of tillage practices and phosphorous management on productivity of soybean (Glycine max) and soil properties in soybeanwheat cropping sequence under conservation agriculture

SOMANATH NAYAK; U.K. BEHERA; S.L. MEENA; Y.S. SHIVAY

doi:10.59797/ija.v64i3.5296

Authors

SOMANATH NAYAK
U.K. BEHERA
S.L. MEENA
Y.S. SHIVAY

DOI:

https://doi.org/10.59797/ija.v64i3.5296

Keywords:

Conservation agriculture, Phosphorous management, Soil properties, Soybean, Tillage

Abstract

The field experiment was conducted at ICAR-Indian Agricultural Research Institute, New Delhi during rainy (kharif) season of 2017 to study the influence of different tillage practices and phosphorous management on pro- ductivity of soybean and soil properties in soybeanwheat rotation under conservation agriculture. The experiment was laid out in split plot design with three replications. Tillage and residues treatments were assigned in main plots which consisted of conventional tillage without residue (CTR), zero tillage without residue (ZTR), zero till- age with wheat residues @ 3 t/ha (ZT + R) and zero tillage-bed planting with wheat residues @ 3 t/ha (ZTB + R) and phosphorus levels were assigned in sub-plots as basal application of 0, 40, 80, 120 kg P O /ha. The study re- 2 5 vealed that higher seed yield was recorded in ZTB + R (2.28 t/ha) and yield improvement with ZTB + R was 16.2%, 11.0% and 5.3% compared to CTR, ZTR and ZT + R, respectively. ZTB + R recorded the highest soil aggregate stabilty, soil organic carbon, microbial biomass carbon and dehydrogenase activity and it was statisti- cally at par with ZT + R. Among the phosphorous management practices, basal application of 80 kg P O /ha, be- 2 5 ing at par with 120 kg P O /ha recorded significantly higher seed yield. Phosphorous management practices did 2 5 not influence significantly the soil properties, however application of 80 kg P O /ha enhanced the biological activi- 2 5 ties of soil, viz. microbial biomass carbon (MBC) and dehydrogenase activity (DHA). Therefore, it was concluded that ZTB + R and basal application 80 kg P O /ha is effective for improving soybean productivity and soil quality 2 5 indicators in soybeanwheat cropping sequence under conservation agriculture.

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