Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/910734
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dc.contributor.authorFAGERIA, N. K.pt_BR
dc.contributor.authorMOREIRA, A.pt_BR
dc.contributor.authorCOELHO, A. M.pt_BR
dc.date.accessioned2011-12-22T11:11:11Zpt_BR
dc.date.available2011-12-22T11:11:11Zpt_BR
dc.date.created2011-12-22pt_BR
dc.date.issued2011pt_BR
dc.identifier.citationJournal of Plant Nutrition, London, v. 34, n. 3, p. 361-370, 2011.pt_BR
dc.identifier.issn0190-4167pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/910734pt_BR
dc.descriptionAmmonium sulfate and urea are main sources of nitrogen (N) for annual crop production in developing countries. Two greenhouse experiments were conducted using ammonium sulfate and urea as N sources for upland rice grown on a Brazilian Oxisol. The N rates used were 0, 50, 100, 150, 3000, and 400 kg N kg?1 of soil. Yield and yield components were significantly increased in a quadratic fashion with increasing N rate. Ammonium sulfate X urea interaction was significant for grain yield, shoot dry matter yield, panicle number, plant height and root dry weight, indicating a different response magnitude of these plant parameters to two sources of N. Based on regression equation, maximum grain yield was achieved with the application of 380 mg N kg?1 by ammonium sulfate and 271 mg N kg?1 by urea. Grain yield and yield components were reduced at higher rates of urea (>300 mg kg N) but these plant parameters? responses to ammonium sulfate at higher rates was constant. In the intermediate N rate range (125 to 275 mg kg?1), urea was slightly better compared to ammonium sulfate for grain yield. Grain yield was significantly related with plant height, shoot dry weight, panicle number, grain harvest index and root dry weight. Hence, improving these plant characteristics by using appropriate soil and plant management practices can improve upland rice yield.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.titleYield and yield components of upland rice as influenced by nitrogen sources.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2014-01-13T11:11:11Zpt_BR
dc.subject.thesagroArrozpt_BR
riaa.ainfo.id910734pt_BR
riaa.ainfo.lastupdate2014-01-13pt_BR
dc.identifier.doi10.1080/01904167.2011.536878pt_BR
dc.contributor.institutionNAND KUMAR FAGERIA, CNPAF; ADONIS MOREIRA, CNPSO; ANTÔNIO MARCOS COELHO, CNPMS.pt_BR
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