Sourgrass (Digitaria insularis) infestation is one of the great responsible for soybean(Glycine max) yield losses. However, a few studies are demonstrating its interference insoybean seed production fields. The aim of this study was to evaluate the sourgrassinterference on soybean seed quality. An experiment was conducted to analyze fivesourgrass density (0, 2, 4, 6 and 8 plants m-2) in two commercial soybean cultivars (GarraIPRO® and ST797 IPRO®). The damage in the highest sourgrass density (8 plants m-2)resulted in losses of 16% […]

Brazil is one of the few countries where it is possible to produce more than one crop in the same agricultural year, and the soybean-corn succession is practiced by most of the producers. This cultural system provided the selection of weeds resistant to herbicides, mainly by the use of herbicides with the same mechanism of action in successive crops. In this scenario, new management strategies should be adopted, such as herbicide applications in corn pre-sowing. The objective of this search […]

Weeds that are not well managed can cause losses of more than 90% in the final production of the crops, and for cowpea there is a certain difficulty to control them, since there are no herbicides registered for the crop. The objective of this study was to evaluate the initial tolerance of cowpea to herbicide application in pre-emergence of the crop. The experiment was conducted in a greenhouse, in a completely randomized design, with three replications. The treatments evaluated were […]

Among the practices that aim to confer sustainability of the agricultural soil, the use of green manure and/or cover crops such as crotalaria are advocated. The management of weeds is one of the practices for the success of crotalaria. However, the information about the selectivity of herbicide are scarce and these are of paramount importance. The objective of this study was to evaluate the selectivity of different herbicides applied in post-emergence of showy crotalaria (Crotalaria spectabilis). Two experiments were conducted […]

Chemical weed control in sorghum crop is limited by the low quantity of herbicides registered for the crop. Studies on the effects and effectiveness of herbicides in sorghum crop are essential to increase alternatives for the control of weeds. In this context, the present study was to evaluate the effect of intoxication caused by herbicides in sorghum, as well as the effectiveness of these for weed control. The experiment was conducted the field in a randomized block design, evaluating eight […]

In herbicides spraying, used as ripeners, should be considered the presence of crops growing in adjacent areas, due to the risk of drift of these products. In this context, assuming the sensitivity of corn to this ripener, the aim of this research was to evaluate the effect of glyphosate sublethal rates in corn when applied to V4 and V8 stages of development. The experiment was conducted in Jataí, GO, consisted of 10 treatments established in randomized blocks design where the […]

Editors of the Revista Brasileira de Herbicidas acknowledge the important contribution of the reviewers during the year 2015.

The knowledge of differential tolerance of pearl millet to different herbicides is critical to the success of chemical weed management in culture. The objective of this study was to evaluate the selectivity of different herbicides applied post-emergence on growing pearl millet. Two experiments were conducted in a greenhouse in a randomized complete block design with four replications. The first experiment involved the following herbicides (g. i.a.ha-1): atrazine (500 and 1000), bentazon (720), carfentrazone-ethyl (3.75), clomazone (400), diclosulam (20), diuron (800), […]

The production of mauve (Urena lobata) and jute (Corchorus capsularis) fiber is demanded by the industry as a raw material in the production of canvas, ropes, book covers and other applications. The production cycle of this fiber is a sustainable activity because it uses renewable resources of the floodplains of the Solimões River in the Amazonas state. The crop management combined with weed control are conditions for the species to express the maximum productive potential. The use of selective herbicides […]

The objective of this study was to evaluate the effectiveness of the glyphosate + quizalofop-p-tefuril in tank mixture with multifunctional adjuvants or oils for the control of RR® corn. The experiment was conducted over greenhouse conditions. The treatments were arranged in a factorial design 11 x 2, with six replications. The treatments consisted of factor A, applying glyphosate + quizalofop-p-tefuril (1080 g a.e. + 36 g a.i. ha-1 – T1) and associations of this with adjuvants, at doses of: 150 […]