Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/68755
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dc.contributor.authorSILVA, P. S. L. ept_BR
dc.contributor.authorSILVA, K. M. B. ept_BR
dc.contributor.authorFREIRE FILHO, F. R.pt_BR
dc.date.accessioned2012-07-07T01:00:55Z-
dc.date.available2012-07-07T01:00:55Z-
dc.date.created2007-07-06pt_BR
dc.date.issued2006pt_BR
dc.identifier.citationIn: CONGRESSO NACIONAL DE FEIJÃO-CAUPI, 1.; REUNIÃO NACIONAL DE FEIJÃO-CAUPI, 6., 2006, Teresina. Tecnologias para o agronegócio: anais. Teresina: Embrapa Meio-Norte, 2006.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/68755pt_BR
dc.descriptionWeeds interfere with nutrient absorption by crops. Therefore, there has been interest in knowing the effects of weeds on soil chemical characteristics, aiming at better fertilization management in order to save fertilizers and reduce pollution problems. The objective of this work was to evaluate the effects of weed control on soil pH and soil Ca, Mg, K, Na, P, and SB contents (sum of bases), when the soil is cultivated with corn. The experiment was conducted as random blocks with 5 replicates and split-plots. Four cultivars (BA 8512, BA 9012, EX 4001 and EX 6004) were grown with weed control (two hoeing operations, or intercropped with cowpea, Vigna unguiculata (L.) Walp.) or without weed control. The weed control measures were assigned to subplots, while cultivars were assigned to plots. Ten weed species predominated in the experiment. The weeding operations increased P content, but reduced S content, while the lack of weed control increased pH (in water). These effects were independent from the cultivars evaluated, which were not different with regard to their effects on soil characteristics.pt_BR
dc.format1 CD-ROM.pt_BR
dc.language.isoengeng
dc.relation.ispartofseries(Embrapa Meio-Norte. Documentos, 121).pt_BR
dc.rightsopenAccesseng
dc.titleEffect of weed control in corn with cowpea intercropping on soil chemical characteristics.pt_BR
dc.typeArtigo em anais e proceedingspt_BR
dc.date.updated2012-07-07T01:00:55Zpt_BR
dc.subject.thesagroCapinapt_BR
dc.subject.thesagroNutrientept_BR
dc.subject.thesagroVariedadept_BR
dc.subject.thesagroZea Mayspt_BR
dc.subject.thesagroVigna Unguiculatapt_BR
riaa.ainfo.id68755pt_BR
riaa.ainfo.lastupdate2012-07-06pt_BR
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