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dc.contributor.authorSILVEIRA, P. M. dapt_BR
dc.contributor.authorGONZAGA, A. C. de O.pt_BR
dc.date.accessioned2017-02-22T11:11:11Zpt_BR
dc.date.available2017-02-22T11:11:11Zpt_BR
dc.date.created2017-02-22pt_BR
dc.date.issued2017pt_BR
dc.identifier.citationPesquisa Agropecuária Tropical, Goiânia, v. 47, n. 1, p. 1-6, jan./mar. 2017.pt_BR
dc.identifier.issn1983-4063pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1065238pt_BR
dc.descriptionThe nitrogen sufficiency index (NSI) obtained by using a portable chlorophyll meter is a practical alternative to evaluate the N levels in plants. This study aimed at determining the appropriate NSI value for leaves of common bean plants, in order to define the need and amount of N to be applied as topdressing, using the Minolta SPAD-502 portable chlorophyll meter. Three field experiments were conducted using a randomized blocks design, with four replications. Nitrogen doses were applied as topdressing and compared with a treatment in which a high dose of N was used as a reference to calculate the NSI, whose value was 95 %. According to the results observed using the chlorophyll meter and the NSI, for each 0.1 percentage point increase in the NSI to reach the adequate level (95 %), it is necessary to apply 1.1-1.5 kg ha-1 of topdressing N.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectAdubação nitrogenadapt_BR
dc.subjectSAPD-502pt_BR
dc.titlePortable chlorophyll meter can estimate the nitrogen sufficiency index and levels of topdressing nitrogen in common bean.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2017-12-04T11:11:11Zpt_BR
dc.subject.thesagroFeijãopt_BR
dc.subject.thesagroPhaseolus vulgarispt_BR
dc.subject.thesagroFertilizante nitrogenadopt_BR
dc.subject.nalthesaurusBeanspt_BR
dc.subject.nalthesaurusNitrogen fertilizerspt_BR
riaa.ainfo.id1065238pt_BR
riaa.ainfo.lastupdate2017-12-04 -02:00:00pt_BR
dc.identifier.doi10.1590/1983-40632016v4742128pt_BR
dc.contributor.institutionPEDRO MARQUES DA SILVEIRA, CNPAF; AUGUSTO CESAR DE OLIVEIRA GONZAGA, CNPAF.pt_BR
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