Dhinu Yadav*, Leela Wati1, Dharam Bir Yadav2 and Ashok Kumar3
Department of Microbiology, CCS Haryana Agricultural University, Hisar
1Department of Microbiology, CCS Haryana Agricultural University, Hisar
2Department of Agronomy, CCS Haryana Agricultural University, Hisar
3Department of Agronomy, CCS Haryana Agricultural University, Hisar
Email: dhinuyadav737@gmail.com
Received-20.01.2020, Revised-17.02.2020
Abstract: Conservation agriculture based tillage practices mainly zero-tillage (ZT) considered as major component of sustainable agriculture that involves reducing the tillage operations retaining at coast 30% of plant parts/crop-residues at the soil surface and including crop-rotation in the existing cropping system. More research is needed for better understanding of tillage effects on soil physico-chemical and microbiological properties. Thus, the impact of two tillage systems: no-tillage (NT) and conventional tillage (CT) with different crop-rotations i.e. Conventional Tillage Wheat-Conventional Tillage Pearlmillet (CTW-CTPM), Conventional Tillage Wheat-Zero Tillage Pearlmillet (CTW-ZTPM), Zero Tillage Wheat-Conventional Tillage Pearlmillet (ZTW-CTPM) and Zero Tillage Wheat-Zero Tillage Pearlmillet (ZTW-ZTPM) on physico-chemical and functional diversity of soil was evaluated in the present investigation at CCSHAU, Regional Research Station (RRS) at Bawal during 2014 year. After harvesting of wheat in 2017, triplicate soil samples from undisturbed and disturbed soil were obtained from two different depths (0-15 cm and 15-30 cm), for determination of CaCO3, Total N, P and K content and Functional diversity of microbes. Physico-chemical properties and functional diversity were recorded relatively higher under ZTW-ZTPM system at surface (0-15 cm) layer. SOC was recorded higher at surface layer under ZTW-ZTPM (0.29 %) as compared to CTW-CTPM (0.26 %) and the respective values at subsurface layer were 0.25 and 0.23%. In nutshell, NT treatments promoted better physico-chemical and functional diversity of the soil relative to the CT treatment.
Keywords: Functional diversity, Nutrient release pattern, Tillage systems
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