Abstract: Background: Corn (Zea mays L.) cultivation plays a fundamental role in the various production chains within agribusiness. Among the factors that significantly interfere with corn cultivation, weeds deserve to be highlighted, as they can cause a reduction of up to 80% in grain yield. It is essential to find post-emergence control alternatives in corn crops, especially with the increase in weeds resistant to glyphosate. Thus, the herbicide glufosinate-ammonium can be an alternative for control weeds in post-emergence in corn. […]

Abstract Background In the largest areas and greater technification of the sweet potato production system, weeds are controlled with herbicides. However, there are only two herbicides registered for the crop in Brazil. Objective The aim of this study was to evaluate the selectivity of different herbicides for the sweet potatoes crop, depending on the genotype and dosage of each product. Methods Two experiments were carried out under field conditions, with the Canadense and Brazlândia Roxa cultivars, one for each cultivar. […]

The use of pre-emergent herbicides offers a promising alternative for proper management of difficult-to-control weed species in soybeans, such as white-eye (Richardia brasiliensis Gomes), a glyphosate-tolerant species, and weeds in the Amaranthus genus (commonly referred to as pigweeds). Here, we aimed at determining whether weed control efficacy and crop selectivity are altered when pre-emergent herbicide applications take place either prior to, or right after crop sowing. To this end, field trials were conducted employing 10 preemergent herbicide treatments (plus an […]

The use of herbicides must be made in a rational way, giving priority to reduce possible adverse effects on subsequent crops. The objective was to evaluate the residual effect of pre-emergent herbicides on growth and initial development as well as the biochemical composition of snap bean seedlings. The experimental design used was the completely randomized, with four replications in factorial scheme 3×4, three snap bean cultivars (Macarrão Favorito, Macarrão Preferido e Macarrão Trepador) and three pre-emergent herbicides, plus a control […]

Crambe is a dedicated oilseed crop suitable for production of industrial feedstocks. Due to the lack of information of post-emergent herbicides, the aim of this study was to evaluate the selectivity of post-emergence herbicides to crambe. The experiment was conducted in Maracaju, MS, Brazil, in 2013. Clethodim (120 g ha-1 a.i.), haloxyfop-p-methyl (63.35 g ha-1 a.i.), fomesafen + fluazifop-p-butil (125 + 125 g ha-1 a.i.), fomesafen + fluazifop-p-butil (187.5 + 187.5 g ha-1 a.i.), nicosulfuron (45 g ha-1 a.i.) herbicides […]