Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1052953
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dc.contributor.authorNASCENTE, A. S.pt_BR
dc.contributor.authorLANNA, A. C.pt_BR
dc.date.accessioned2016-09-16T11:11:11Zpt_BR
dc.date.available2016-09-16T11:11:11Zpt_BR
dc.date.created2016-09-16pt_BR
dc.date.issued2016pt_BR
dc.identifier.citationPesquisa Agropecuária Tropical, Goiânia, v. 46, n. 3, p. 284-291, jul./set. 2016.pt_BR
dc.identifier.issn1983-4063pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1052953pt_BR
dc.descriptionThe presence of cover crop straw and early application of total N at sowing may provide significant changes in the microbial population, reflecting on the N dynamics in the soil and in upland rice plants. This study aimed at determining the effect of the early application of nitrogen doses as mineral N and microbial biomass carbon in the soil, as well as in the activity of nitrate reductase, and grain yield of upland rice plants cultivated under notillage system (NTS). A randomized blocks design, in a split-plot scheme, with four replications, was used. The treatments consisted of N doses (0 kg ha-1, 40 kg ha-1, 80 kg ha-1 and 120 kg ha-1) and the presence or absence of U. brizantha cover straw. Maintaining the straw on the soil surface reduces the ammonium levels and increases the microbial biomass carbon content of the soil. The application of increasing doses of N in the soil provides increases in the levels of nitrate and ammonium in the soil up to 28 days after emergence. The activity of the nitrate reductase enzyme in the plants increases and the contents of ammonium and nitrate in the soil decrease with the crop development. The number of panicles and grain yield of upland rice increase with the increase of the nitrogen fertilization, but decrease in the presence of U. brizantha straw. Thus, it is recommend the use of early N fertilization in upland rice crop.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.titleStraw and early nitrogen fertilization affect soil properties and upland rice yield.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2016-09-28T11:11:11Zpt_BR
dc.subject.thesagroArrozpt_BR
dc.subject.thesagroOryza sativapt_BR
dc.subject.thesagroCerradopt_BR
dc.subject.thesagroAgricultura sustentávelpt_BR
dc.subject.thesagroSolopt_BR
dc.subject.thesagroFertilizante nitrogenadopt_BR
riaa.ainfo.id1052953pt_BR
riaa.ainfo.lastupdate2016-09-28pt_BR
dc.identifier.doihttp://dx.doi.org/10.1590/1983-40632016v4641386pt_BR
dc.contributor.institutionADRIANO STEPHAN NASCENTE, CNPAF; ANNA CRISTINA LANNA, CNPAF.pt_BR
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