Preservation of Organic Matter as Affected by Various Clay Contents in an Acid Soil:Beneficial Impact on Groundnut Yield

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dc.contributoren-US
dc.creatorANDA, MARKUS
dc.creatorSURYANI, ERNA
dc.creatorKURNIA, UNDANG
dc.date2012-12-18
dc.date.accessioned2018-06-04T06:35:14Z
dc.date.available2018-06-04T06:35:14Z
dc.date.issued2012-12-18
dc.descriptionSystematic study on the effect of various clay contents on organic C dynamic and groundnut yield (Arachis hypogea) in upland acid soils has not received any attention. The objectives of the study were: (i) to assess the capability of various soil clay contents to preserve organic C, (ii) and to relate the effects of soil clay fraction and organic C on groundnut yield of an acid soil (Ultisol). The soil clay content was artificially adjusted to 15, 30, 45, 60 and 75%. Each soil clay percentage was thoroughly mixed with finely ground rice straw at the rate equals to 0.5, 1, 2, 3, 4, and 5% of organic C. The soil was then transferred into a pot and planted with corn (Zea mays)for the first 6 months and followed by groundnut for further 6 months. The experiment was arranged in a split plot design with three replications under glasshouse conditions. Results for the first 6 months have been published elsewhere. Hence, results for the last 6 months were presented here. Soil clay was the major factor responsible for the preservation of organic C as indicated by (i) the increased soil organic C with increasing clay fraction, and (ii) the low mineralization rate as shown by CO2-C: total C ratio from low to high 75<60<45<30<15% soil clay. It is observed that every 15% clay increment could preserve another 0.3% organic C for the period of 12 months. The increased soil organic C could linearly increase groundnut yield for 15 and 30% clay and quadratic yield for 45 and 60% clay. The maximum grain yield was 25.7-27.6 g pot-1 (equals to 2.9-3.1 t ha-1), which was obtained at 30-45 % clay containing 1.8-1.9% soil organic C.en-US
dc.formatapplication/pdf
dc.identifierhttp://ejurnal.litbang.pertanian.go.id/index.php/jti/article/view/261
dc.identifier10.2017/jti.v0i27.261
dc.identifier.urihttps://repository.pertanian.go.id/handle/123456789/2434
dc.languageeng
dc.publisherBalai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanianen-US
dc.relationhttp://ejurnal.litbang.pertanian.go.id/index.php/jti/article/view/261/152
dc.source1410-7244
dc.sourceJurnal Tanah dan Iklim; No 27 (2008): Juli 2008en-US
dc.sourceJurnal Tanah dan Iklim (Indonesian Soil and Climate Journal); No 27 (2008): Juli 2008id-ID
dc.titlePreservation of Organic Matter as Affected by Various Clay Contents in an Acid Soil:Beneficial Impact on Groundnut Yielden-US
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
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