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Please use this identifier to cite or link to this item:
http://krishi.icar.gov.in/jspui/handle/123456789/32443
Full metadata record
DC Field | Value | Language |
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dc.contributor.author | ICAR_CRIDA | en_US |
dc.date.accessioned | 2020-02-25T05:26:04Z | - |
dc.date.available | 2020-02-25T05:26:04Z | - |
dc.date.issued | 2004 | - |
dc.identifier.citation | Not Available | en_US |
dc.identifier.issn | Not Available | - |
dc.identifier.uri | http://krishi.icar.gov.in/jspui/handle/123456789/32443 | - |
dc.description | Not Available | en_US |
dc.description.abstract | Along-termexperimentwasconductedwiththeobjectiveofselectingtheappropriatelandmanagementtreatmentsandtoidentify the key indicators of soil quality for dryland semi-arid tropical Alfisols. The experiment was conducted using a strip split–split plot design on an Alfisol (Typic Haplustalf) in southern India under sorghum (Sorghum vulgare (L))-castor (Ricinus communis(L)) bean rotation. The strip constituted two tillage treatments: conventional tillage (CT) and minimum tillage (MT); main plots were three residuestreatments:sorghumstover(SS),gliricidialoppings(GL),‘no’residue(NR)andsubplotswerefournitrogenlevels:0(N0),30 (N30), 60 (N60), and 90 kg ha 1 (N90). Soil samples were collected after the sixth and seventh year of experimentation and were analyzed for physical, chemical and biological parameters. Sustainable yield index (SYI) based on long-term yield data and soil quality index (SQI) using principal component analysis (PCA) andlinear scoring functions werecalculated. Applicationofgliricidia loppings proved superior to sorghum stover and no residue treatments in maintaining higher SQI values. Further, increasing N levels also helped in maintaining higher SQI. Among the 24 treatments, the SQI ranged from 0.90 to 1.27. The highest SQI was obtained in CTGLN90 (1.27) followed by CTGLN60 (1.19) and MTSSN90 (1.18), while the lowest was under MTNRN30 (0.90) followed by MTNRN0 (0.94), indicatingrelatively less aggradative effects. Theapplicationof90 kg N ha 1 under minimumtillage evenwithout applying any residue (MTNRN90) proved quite effective in maintaining soil quality index as high as 1.10. The key indicators, which contributedconsiderablytowardsSQI,wereavailableN,K,S,microbialbiomasscarbon(MBC)andhydraulicconductivity(HC).On average,theorderofrelativecontributionoftheseindicatorstowardsSQIwas:availableN(32%),MBC(31%),availableK(17%),HC (16%), and S (4%). Among the various treatments, CTGLN90 not only had the highest SQI, but also the most promising from the viewpoint of sustainability, maintaining higher average yield levels under sorghum–castor rotation. From the view point of SYI, CT approach remained superior to MT. To maintain the yield as well as soil quality in Alfisols, primary tillage along with organic residue and nitrogen application are needed | en_US |
dc.description.sponsorship | Not Available | en_US |
dc.language.iso | English | en_US |
dc.publisher | Srinivas, K. | en_US |
dc.relation.ispartofseries | Not Available; | - |
dc.subject | Soil quality assessment; Soil quality indicators; Alfisol; Tillage; Crop residue; India | en_US |
dc.title | Long-term soil management effects on crop yields and soil quality in a dryland Alfisol. | en_US |
dc.title.alternative | Long-term soil management effects on crop yields and soil quality in a dryland Alfisol. | en_US |
dc.type | Technical Report | en_US |
dc.publication.projectcode | Not Available | en_US |
dc.publication.journalname | Soil and Tillage Research | en_US |
dc.publication.volumeno | 83:. | en_US |
dc.publication.pagenumber | 246-259 | en_US |
dc.publication.divisionUnit | Not Available | en_US |
dc.publication.sourceUrl | Not Available | en_US |
dc.publication.authorAffiliation | ICAR_CRIDA | en_US |
dc.ICARdataUseLicence | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf | en_US |
dc.publication.naasrating | 10.6 | en_US |
Appears in Collections: | NRM-CRIDA-Publication |
Files in This Item:
File | Description | Size | Format | |
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25Long-term soil management effects on crop yields and soil quality in a dryland Alfisol..pdf | 233.81 kB | Adobe PDF | View/Open |
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