The use of plant regulators and foliar fertilizers in crops has increased due to the benefits provided in plant nutrition and in tolerance to environmental stresses. The objective of this research was to evaluate the effects of plant regulator and foliar fertilizer in reducing injuries caused by the herbicide 2,4-D in two soybean varieties (M7110 IPRO and M7739 IPRO). Four experiments were conducted in randomized block design with four replications. In each experiment, ten treatments were used: single application of […]

The objective of this work was to evaluate the effect of biochar on the sensitivity of presprouted seedlings (MPB) of sugarcane to the clomazone, imazapic and indaziflam appliedin pre-planting alone or in combination. Two varieties of sugarcane (RB 975952 and RB985476) were evaluated. The experimental design was completely randomized with 4replications, using a 9 x 2 factorial scheme, with nine treatments (imazapic 52.5 and 200 gia ha-1, clomazone 1000 g ia ha-1, indaziflam 100 g i.a. ha-1, associations of imazapic […]

Nitrogen is the most extracted nutrient in carrot fields. However, high N doses can favor thegrowth of aerial part in relation to the root of the plant. The application of metribuzin canalter the biomass partition in favor of the roots. Thus, the objective of this research was toevaluate the effect of post-emergence metribuzin application and its interaction withnitrogen on the axial and radial growth and yield of carrot roots. Three field experimentswere carried out in different growing sites. Experimental design […]

O Brasil é o terceiro maior produtor de frutas do mundo, sendo que as plantas daninhasconstituem um dos principais problemas para a exploração da capacidade de produção defrutíferas tropicais. Ainda há muitas lacunas no conhecimento do manejo adequado deplantas das plantas daninhas em cultivos de frutíferas. O objetivo desta revisão foi sumarizardados sobre a interferência, métodos de controle e manejo de plantas daninhas nas culturasdo abacaxizeiro, bananeira, coqueiro, mamoeiro e maracujazeiro. Métodos mecânicosassociados à aplicação de herbicidas nas entrelinhas de […]

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 […]

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% […]

he sowing of beans after soybean harvest can be a problem since the voluntary plants ofthe crop emerge after harvesting and compete with beans. The herbicide ethoxysulfuron hasbeen used for the management of different species of weeds, among them the voluntaryweed soybean in the cultivation of beans. Therefore, this study was developed with theobjective of evaluating the selectivity and effectiveness of different doses of ethoxysulfuronapplied to common bean for the control of voluntary soybeans. The experiment wasinstalled in a randomized […]