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Soil and water conservation measures improve soil carbon sequestration and soil quality under cashews

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dc.contributor.authorMahajan, Gopal Ramdas
dc.contributor.authorDas, Bappa
dc.contributor.authorManivannan, Sandrasekaran
dc.contributor.authorManjunath, Begur Lakshminarasimha
dc.contributor.authorVerma, Ram Ratan
dc.contributor.authorDesai, Sujeet
dc.contributor.authorKulkarni, Rahul Mukund
dc.contributor.authorLatare, Ashish Marotrao
dc.contributor.authorSale, Reshma
dc.contributor.authorMurgaonkar, Dayesh
dc.contributor.authorPatel, Kiran Puna
dc.contributor.authorMorajkar, Shaiesh
dc.contributor.authorDesai, Ashwini
dc.contributor.authorBarnes, Natasha
dc.contributor.authorMulla, Heena
dc.date.accessioned2025-01-30T06:05:54Z
dc.date.available2025-01-30T06:05:54Z
dc.date.issued2021
dc.description.abstractLand degradation is becoming a serious problem in the west coast region of India where one of the world's eight biodiversity hotspots, the �Western Ghats�, is present. Poor land management practices and high rainfall have led to increasing problems associated with land degradation. A long-term (13-year) experiment was done to evaluate the impact of soil and water conservation measures on soil carbon sequestration and soil quality at three different depths under cashew nut cultivation on a 19% slope. Five soil and water conservation measures - continuous contour trenches, staggered contour trenches, half-moon terraces, semi-elliptical trenches, and graded trenches all with vegetative barriers of Stylosanthes scabra and Vetiveria zizanoides and control were evaluated for their influence on soil properties, carbon sequestration, and soil quality under cashews. The soil and water conservation measures improved significantly the soil organic carbon, soil organic carbon stock, carbon sequestration rate and microbial activity compared to the control condition (without any measures). Among the measures tested, continuous contour trenches with vegetative barriers outperformed the others with respect to soil organic carbon stock, sequestration rate, and microbial activity. The lower metabolic quotient with the measures compared to the control indicated alleviation of environmental stress on microbes. Using principal component analysis and a correlation matrix, a minimum dataset was identified as the soil available nitrogen, bulk density, basal soil respiration, soil pH, acid phosphatase activity, and soil available boron and these were the most important soil properties controlling the soil quality. Four soil quality indices using two summation methods (additive and weighted) and two scoring methods (linear and non-linear) were developed using the minimum dataset. A linear weighted soil quality index was able to statistically differentiate the effect of soil and water conservation measures from that of the control. The highest value of the soil quality index of 0.98 was achieved with continuous contour trenches with a vegetative barrier. The results of the study indicate that soil and water conservation measures for cashews are a potential strategy to improve the soil carbon sequestration and soil quality along with improving crop productivity and reducing the erosion losses. � 2020 International Research and Training Centre on Erosion and Sedimentation / the World Association for Sedimentation and Erosion Research
dc.identifier.doihttps://doi.org/10.1016/j.ijsrc.2020.07.009
dc.identifier.issn10016279
dc.identifier.urihttps://dl.bhu.ac.in/ir/handle/123456789/25272
dc.publisherElsevier B.V.
dc.subjectLand degradation
dc.subjectMicrobial activity
dc.subjectMicrobial biomass carbon
dc.subjectMinimum dataset
dc.subjectSoil erosion
dc.subjectWestern Ghats
dc.titleSoil and water conservation measures improve soil carbon sequestration and soil quality under cashews
dc.typeArticle
dspace.entity.typePublication
journal.titleInternational Journal of Sediment Research
journalvolume.identifier.volume36

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2021