Pharmacognosy

Journal of Pharmacognosy and Phytochemistry

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Journal of Pharmacognosy and Phytochemistry

Vol. 7, Issue 1 (2018)

Long term effects of tillage and residue management on soil aggregation, soil carbon sequestration and energy relations under rice–wheat cropping system in Typic Ustochrept soil of Uttar Pradesh

Author(s): RK Naresh, SP Singh, RK Gupta, Arvind Kumar, Ashok Kumar, RS Rathore, SS Dhaliwal, Vivak Kumar, Vivek, PK Singh, SP Singh, Nihal Chandra Mahajan and Yogesh Kumar
Abstract: A field experiment was conducted to investigate the influence of different combinations of tillage and residue management on carbon sequestration in different sized soil aggregates and also on crop yield after 4 years of continuous rice–wheat cropping system on Typic Ustochrept soil of Uttar Pradesh. Compared to conventional tillage, macro-aggregates in conservation tillage in wheat coupled with unpuddled transplanted rice (RT-TPR) was increased by 50.13% and micro-aggregates of the later decreased by 10.1% in surface soil.50% surface residue retention caused a significant increment of 15.65% in total aggregates in surface soil (0–5cm) and 7.53% in sub-surface soil (5–10 cm). In surface soil, the maximum (19.2%) and minimum (8.9%) proportion of total aggregated carbon was retained with >2mm and 0.1–0.05mm size fractions, respectively. WBed-TPR combined with zero tillage on permanent wide raised beds in wheat (with residue) (T9) had the highest capability to hold the organic carbon in surface (11.57g kg-1soil aggregates).From the study, it has been proved that higher SOC content of 8.14 g kg-1 of soil was found in reduced tilled residue retained plots followed by 10.34 g kg-1 in permanently wide raised bed with residue retained plots. Whereas, the lowest level of SOC content of 5.49 g kg-1 of soil were found in puddled transplanted rice followed by wheat planted under conventionally tilled plots. Conservation agriculture practices secure good soil health by improving soil aggregation (53.8%) and increased energy output with respect to the conventional tillage puddle transplanted rice (T10) after four years of continuous rice–wheat cropping system in a Typic Ustochreptsoil of Uttar Pradesh.
Pages: 237-247  |  683 Views  30 Downloads
How to cite this article:
RK Naresh, SP Singh, RK Gupta, Arvind Kumar, Ashok Kumar, RS Rathore, SS Dhaliwal, Vivak Kumar, Vivek, PK Singh, SP Singh, Nihal Chandra Mahajan and Yogesh Kumar. Long term effects of tillage and residue management on soil aggregation, soil carbon sequestration and energy relations under rice–wheat cropping system in Typic Ustochrept soil of Uttar Pradesh. Journal of Pharmacognosy and Phytochemistry. 2018; 7(1): 237-247.
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