Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/953592
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dc.contributor.authorNASCENTE, A. S.pt_BR
dc.contributor.authorCRUSCIOL, C. A. C.pt_BR
dc.contributor.authorCOBUCCI, T.pt_BR
dc.date.accessioned2013-03-20T11:11:11Zpt_BR
dc.date.available2013-03-20T11:11:11Zpt_BR
dc.date.created2013-03-20pt_BR
dc.date.issued2012pt_BR
dc.identifier.citationPesquisa Agropecuária Brasileira, v. 47, n. 12, p. 1699-1706, dez. 2012.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/953592pt_BR
dc.descriptionThe objective of this work was to evaluate the effect of cover crops and their desiccation times on upland rice yield and on the levels of nitrate and ammonium in a no.tillage soil. The experiment was carried out in a randomized blocks, with split plots and three replicates. Cover crops (plots) were sowed in the off season (March 2009). In November 2009, at 30, 20, 10 and 0 days before rice sowing (split plots), herbicide was applied on the cover crops (fallow, Panicum maximum, Urochloa ruziziensis, U. brizantha and millet). Straw and soil were sampled (0.10 cm) at the sowing day, and after 7, 14, 21, 28 and 35 days. Straws from millet and fallow were degraded more rapidly and provided the lowest level of nitrate in the soil. Urochloa ruziziensis, U. brizantha and P. maximum produced higher amounts of dry matter, and provided the highest levels of nitrate in the soil. Millet provides the lowest nitrate/ammonium ratio and the highest upland rice yield. Desiccations carried out at 30 and 20 days before sowing had the largest levels of nitrate in the soil at the sowing date. Nitrogen content and forms in the soil are affected by cover crops and their desiccation times.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.titleAmmonium and nitrate in soil and upland rice yield as affected by cover crops and their desiccation time.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2013-03-20T11:11:11Zpt_BR
dc.subject.thesagroArrozpt_BR
dc.subject.thesagroOryza sativapt_BR
dc.subject.thesagroPanicum maximumpt_BR
dc.subject.thesagroMilhetopt_BR
dc.subject.thesagroPlanta de coberturapt_BR
dc.subject.thesagroDesidrataçãopt_BR
dc.subject.thesagroNitratopt_BR
dc.subject.thesagroAmôniapt_BR
dc.subject.nalthesaurusUrochloa ruziziensispt_BR
dc.subject.nalthesaurusUrochloa brizanthapt_BR
riaa.ainfo.id953592pt_BR
riaa.ainfo.lastupdate2013-03-20pt_BR
dc.contributor.institutionADRIANO STEPHAN NASCENTE, CNPAF; CARLOS ALEXANDRE COSTA CRUSCIOL., UNESP, Botucatu-SP; TARCISIO COBUCCI, CNPAF.pt_BR
Aparece nas coleções:Artigo em periódico indexado (CNPAF)

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