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Tillage, irrigation levels and rice straw mulches effects on wheat productivity, soil aggregates and soil organic carbon dynamics after rice in sandy loam soils of subtropical climatic conditions

Creator: Naresh, R.K.
Creator: Gupta, R.K.
Creator: Jat, M.L.
Creator: Singh, S.P.
Creator: Ashish Dwivedi
Creator: Dhaliwal, S.S.
Creator: Kumar, V.
Creator: Kumar, L.
Creator: Singh, O.
Creator: Singh, V.
Creator: Kumar, A.
Creator: Rathore, R.S.
Year: 2016
URI: https://hdl.handle.net/10883/21477
Language: English
Publisher: JPAM
Copyright: CIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact CIMMYT-Knowledge-Center@cgiar.org indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose.
Type: Article
Place of Publication: India
Pages: 1987-2002
Issue: 3
Volume: 10
Keywords: Water Stable Aggregates
Publisher URI: https://microbiologyjournal.org/tillage-irrigation-levels-and-rice-straw-mulches-effects-on-wheat-productivity-soil-aggregates-and-soil-organic-carbon-dynamics-after-rice-in-sandy-loam-soils-of-subtropical-climatic-conditions/
Description: Soil organic carbon is considered to be of central importance in maintaining soil quality. We assessed the adoption of different combinations of tillage, crop residue and irrigation on soil organic carbon (SOC) dynamics in different sized soil aggregates and also on crop yield after 4 years in wheat monoculture field plot experiment in a sandy loam soil under subtropical climatic conditions. Results showed that tillage crop residue and irrigation significantly increased water stable aggregates and had profound effects in increasing the mean weight diameter as well as the formation of macro-aggregates, which were the highest in both surface (14.5 &12.5%) and subsurface (13.4 & 12.1%) soil layers under FIRB and ZT with application rice straw and I5 treatments after 3 years. Hence, better aggregation was found with FIRB with 6t rice straw + I5 where macro-aggregates were greater than 30% of total soil mass. The same treatment also enhanced the labile C and N fractions such as water soluble C, particulate and light fraction organic matter from 7.1 mg·kg-1 conventional tillage to 17.6 mg·kg-1 in surface layer and from 6.5 to 16.3 mg·kg-1 in subsurface layer after 3 years leading to the 42% and 39% higher water soluble C stocks over CT in 0-15 cm soil layers, respectively. The changes in water soluble C stocks after 4 years were 45% and 40%. WUE increased as mulching increased for the I2, I3, and I4 treatments, but not for the I5 treatment. We conclude that variants of conservation tillage increase SOC stock in the sandy loam soils of subtropical climatic conditions of western U. P., India and are therefore more sustainable practices than those currently being used.
Agrovoc: CONSERVATION TILLAGE
Agrovoc: RICE STRAW
Agrovoc: SOIL STRUCTURAL UNITS
Agrovoc: SOIL ORGANIC CARBON
Agrovoc: WATER USE
ISSN: 0973-7510
Journal: Journal of Pure and Applied Microbiology


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  • Sustainable Intensification
    Sustainable intensification agriculture including topics on cropping systems, agronomy, soil, mechanization, precision agriculture, etc.

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