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http://krishi.icar.gov.in/jspui/handle/123456789/36029
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DC Field | Value | Language |
---|---|---|
dc.contributor.author | Not Available | en_US |
dc.date.accessioned | 2020-05-21T09:43:28Z | - |
dc.date.available | 2020-05-21T09:43:28Z | - |
dc.date.issued | 2017-03-01 | - |
dc.identifier.citation | Not Available | en_US |
dc.identifier.issn | Not Available | - |
dc.identifier.uri | http://krishi.icar.gov.in/jspui/handle/123456789/36029 | - |
dc.description | Not Available | en_US |
dc.description.abstract | Residue retention and reduced tillage are both conservation agricultural practices that may enhance soil organic carbon (SOC) stabilization in soil. We evaluated the long-term effects of no-till (NT) and stover retention from maize on SOC dynamics in a Rayne silt loam Typic Hapludults in Ohio. The six treatments consisted of retaining 0, 25, 50, 75, 100 and 200% of maize residues on each 3 9 3 m plot from the crop of previous year. Soil samples were obtained after 9 yrs of establishing the experiment. The whole soil (0–10 and 10–20 cm of soil depths) samples under different treatments were analysed for total C, total N, recalcitrant C (NaOCl treated sample) and 13C isotopic abundance (0–10 cm soil depth). Complete removal of stover for a period of 9 yrs significantly (P < 0.01) decreased soil C content (15.5 g/kg), whereas 200% of stover retention had the maximum soil C concentration (23.1 g/kg). Relative distribution of C for all the treatments in different fractions comprised of 55–58% as labile and 42–45% as recalcitrant. Retention of residue did not significantly affect total C and N concentration in 10–20 cm depth. 13C isotopic signature data indicated that C4-C (maize-derived C) was the dominant fraction of C in the top 0–10 cm of soil layer under NT with maize-derived C accounting for as high as 80% of the total SOC concentration. Contribution of C4-C or maize-derived C was 71–84% in recalcitrant fraction in different residue retained plots. Residue management is imperative to increase SOC concentrations and long-term agro-ecosystem necessitates residue retention for stabilizing C in light-textured soils. | en_US |
dc.description.sponsorship | Not Available | en_US |
dc.language.iso | English | en_US |
dc.publisher | Not Available | en_US |
dc.relation.ispartofseries | Not Available; | - |
dc.subject | No-till, maize, soil organic carbon, nitrogen, carbon stabilization, 13C isotopic abundance | en_US |
dc.title | Natural 13C abundance and soil carbon dynamics under long-term residue retention in a no-till maize system | en_US |
dc.title.alternative | Not Available | en_US |
dc.type | Book | en_US |
dc.publication.projectcode | Not Available | en_US |
dc.publication.journalname | Not Available | en_US |
dc.publication.volumeno | Not Available | en_US |
dc.publication.pagenumber | Not Available | en_US |
dc.publication.divisionUnit | Not Available | en_US |
dc.publication.sourceUrl | Not Available | en_US |
dc.publication.authorAffiliation | ICAR::Indian Institute of Soil Science | en_US |
dc.ICARdataUseLicence | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf | en_US |
Appears in Collections: | NRM-IISS-Publication |
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