Cover crops as affecting soil chemical and physical properties and development of upland rice and soybean cultivated in rotation.

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dc.contributorADRIANO STEPHAN NASCENTE, CNPAF; LUIS FERNANDO STONE, CNPAF.
dc.creatorNASCENTE, A. S.
dc.creatorSTONE, L. F.
dc.date2018-11-30T23:34:22Z
dc.date2018-11-30T23:34:22Z
dc.date2018-11-30
dc.date2018
dc.date2019-07-01T11:11:11Z
dc.date.accessioned2026-07-01T00:04:14Z
dc.descriptionCover crops can provide changes in soil chemical and physical properties, which could allow a sustainable development of soybean and upland rice rotation in Brazilian Cerrado. The objective of this study was to determine the effects of cover crops (cultivated in the offseason) in the soybean-upland rice rotation (cultivated in the summer season) on the soil chemical and physical properties, yield components and grain yield of the cash crops. The experimental design was a randomized block design in factorial scheme 4 × 2 with six replications. Treatments were composed by four cover crops: fallow, millet (Pennisetum glaucum) + Crotalaria ochroleuca, millet + pigeon pea (Cajanus cajans), and millet + pigeon pea + Urochola ruziziensis in the offseason with one or two cycles of cover crops, with rice (Oryza sativa) or soybean (Glycine max) in the summer season. Cover crops alone provided no changes in soil chemical properties. However, the rotation cover crops / cash crops / cover crops / cash crops reduced pH, Al and H + Al and increased Ca, Mg, K and Fe contents in the soil. The cover crops millet + pigeon pea and millet + pigeon pea + U. ruziziensis improved soil physical properties in relation to fallow, especially in the 0?0.10 m soil layer. In spite of the improvement of the soil physical properties after two years of rotation with cover crops and cash crops, the soil physical quality was still below the recommended level, showing values of macroporosity, S index and soil aeration capacity lower than 0.10 m3/m3, 0.035 and 0.34, respectively. Upland rice production was higher under mixtures of cover crops than under fallow, mainly because of soil physical changes done by these mixtures of cover crops. Soybean grain yield was similar under all cover crops tested, but was higher after the rotation cover crops / upland rice / cover crops than after only one cycle of cover crops.
dc.identifierRice Science, v. 25, n. 6, p. 340-349, 2018.
dc.identifier1672-6308
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1100437
dc.identifier.urihttp://hdl.handle.net/123456789/396715
dc.languageeng
dc.rightsopenAccess
dc.subjectArroz
dc.subjectOryza Sativa
dc.subjectGlycine Max
dc.subjectSolo
dc.subjectPlanta de Cobertura
dc.subjectRotação de Cultura
dc.subjectPropriedade Físico-Química
dc.subjectPlantio Direto
dc.subjectRice
dc.subjectSoybeans
dc.subjectCover crops
dc.subjectCrop rotation
dc.subjectNo-tillage
dc.subjectSustainable agriculture
dc.subjectTropical agriculture
dc.titleCover crops as affecting soil chemical and physical properties and development of upland rice and soybean cultivated in rotation.
dc.typeArtigo de periódico

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