The objective of this work was to evaluate herbicides efficacy and selectivity applied in post-emergence for controlling weeds in two corn cultivars. The experiment was conducted between December/2007 and April/2008, at FEP – UNESP, Selviria County/MS. The experiment was conducted in conventional tillage, by using seven treatments and four replications, in split plot scheme for cultivar factor: Pioneer 30 S31 and Dow Agroscience 2B710. Applications were effected in crops and weeds post-emergence, 7 and 14 days after crop emergence, by […]

Portulaca oleracea is found intervening in several crops mainly vegetables, besides crops like sugar cane and cotton. The study was developed with the objective of improving the recommendation of herbicides alternatives in pre emergency used on cotton crop, for controlling P. oleracea. The work was conducted in two stages in greenhouse conditions: the first to establishing, through dose-response curve, herbicides rates able to promote efficient control of P. oleracea; the second one, to verify the period of residual activity provided by […]

On wheat crop there is scarce scientific evidence regarding the use of herbicides, limiting the information about their effects. In this context, the objective of this work was to evaluate some yield components and seed quality of wheat crop under the effect of increasing doses application of metsulfuron- methyl in two stages of development, from the premise that the use of high doses in combination with developmental stage may affect the plant. With this purpose an experiment was conducted in […]

Aiming to evaluate the yield and productivity of soybean crop in response to burndown time and herbicide application in post-emergence in conventional and transgenic genotypes, the area of Technological Center COMIGO, was used to conduct this study. The experimental design was a randomized complete block in factorial arrangement 2 x 7, adopting eight repetitions. The first factor corresponded to burndown times before seeding, performed 15 and 1 day before sowing (DBS). The second factor was constituted by seven managements postemergent, described […]