Bahiagrass (Paspalum notatum) is a poacea resistant to trampling, water restriction and low soil fertility; however, it requires frequent cutting to eliminate the biomass excess it produces. To inhibit the growth of turfs and to avoid or delay cutting, growth regulators and herbicides have been tested. The goal of this work was to evaluate the potential of three herbicides as growth regulators on bahiagrass, and their influence on growth and chloroplast pigment content. The experimental design was in randomized blocks, […]

The objective of this work was to evaluate the tolerance of cowpea, BSR Aracê, to different herbicides applied in the post-emergence period, in the initial phase of plant growth. The experiment was conducted in a greenhouse, in a completely randomized design, with four replications. The treatments evaluated were: haloxyfop (60 g ha-1), lactofen (180 g ha-1), chlorimuron-ethyl (17,5 g ha-1), bentazon (576 g ha-1), bentazon + imazamox (600 + 28 g ha-1), imazethapyr (100 g ha-1), fomesafen (250 g ha-1), […]

Despite the extensive cultivated area in Brazil and the growing demand for information about weed control, few studies are found in literature reporting the efficacy and selectivity of herbicides for cowpea (Vigna unguiculata). View of this, this work was developed in order to evaluate the selectivity and efficacy of herbicides for cultivars of cowpea. The experiment was conducted in a randomized block design in factorial scheme 2 x 13, with two cowpea cultivars (BRS Xiquexique and BRS Guariba) and 13 […]

The chemical weed control is the most used in sugarcane culture, and studies covering the effects of these herbicides on the development of pre-sprouted seedlings of sugarcane. The objective of this work was to evaluate the effect of the herbicides ametryn, clomazone, hexazinone + diuron, metribuzin, sulfentrazone and tebuthiuron isolated and in association with saflufenacil in the initial growth of pre-sprouted seedlings of sugarcane varieties at different times of application. The experiment was conducted in a greenhouse in a completely […]

Maize with tolerance to the herbicide glyphosate (Roundup ReadyTM) (RR2TM maize) has been increasingly used, since it favors the use of this herbicide to control weeds. Thus the objective of this study was to evaluate the tolerance of the hybrid 2B810PW (RR2/LL), submitted to the application of isolated and associated of glyphosate, glufosinate and atrazine at post-emergency (V4). The assay was carried out in the field, in the harvest 2013/14, and the design adopted was a randomized block with four […]

The use of herbicides in pre-emergence of the soybean crop is a great tool for weed management. However, it is important to know the effects of herbicides in order to avoid a decrease in productivity. The objective of this study was to evaluate the sensitivity of three soybean cultivars submitted to pre-emergence application of diclosulam in clayey soils and average. The experiments were conducted in a greenhouse in randomized complete block design with four replications in a 6×2 factorial, where […]

Sugarcane has great economic importance in Brazil. In order to maintain its yield, several biotic and abiotic factors can have a positive or negative influence. Among them, it is possible to mention weeds, nematodes and the synergistic action among pesticides in order to control both. Thus, the present work had the objective to study the interaction between herbicides and nematicides used in sugarcane crop. The experimental design was completely randomized, in a 5 x 3 factor scheme, with four replications. […]

Soybean is the most important leguminous species worldwide and therefore investments in technologies are needed to increase productivity and reduce adverse factors to the crop. In Southern Brazil, there are often problems caused by lodging of plants from some soybean cultivars. This study aimed to evaluate the effects of application of Protoporfirinogênio Oxidase (PROTOX) inhibitors herbicides on development, yield and components and plant lodging on the cultivar CD 214 RR. The experiment was conducted under field, in randomized block design […]

Cassava has a long cycle and slow initial growth, which facilitates development of weeds that will compete with the culture. It was aimed to evaluate the tolerance of cassava cultivar Aciolina, the different herbicides in the early stages of crop development. The experiment was conducted in a greenhouse, in a completely randomized design with four replications. The evaluated treatments were: haloxyfop (60 g ha-1 a.i.), lactofen (180 g ha-1 a.i.), chorimuron-ethyl (17.5 g ha-1 a.i.), bentazon (576 g ha-1 a.i.), […]

Brazil is the world’s leading producer of passion fruit. However, for this crop, there are no records of herbicides for weed control. Thus, the aim of this study was to evaluate the effects of herbicide application after transplanting of yellow passion fruit seedlings during growth and phytotoxicity of the crop. Twenty-one herbicides with different mechanisms of action were tested by application at 35 days after transplanting (DAT). Phytotoxicity of the crop by the herbicides was evaluated at 63 DAT, and […]