Pastures formed with Cynodonn lemfuensis Vanderyst are excellent alternatives for feeding livestock. The competition from weeds can cause damage to pasture, and Vernonia polyanthes and Desmodium incanum are among the main competing species. The objective of this study was to evaluate the efficacy of different herbicides to control Vernonia polyanthes and Desmodium incanum, applied in high and low spray mix volumes. The experiment was established in an area formed for over 10 years by African stargrass (Cynodonn lemfuensis). The experimental […]

The weed control through the application of long residual activity of herbicides is important strategy for the removal of these at different times of the year. The objective of this study was to evaluate the residual activity of herbicides applied pre-emergence of sugarcane on the morning glory of control in the dry season, and the selectivity of the herbicides sugarcane crop. The experiment was conducted in a randomized block design with four replications. The treatments were (g a.i. ha-1): hexazinone […]

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 […]

Nowadays it has become important to test new alternatives herbicide molecules, even if they are not registered for the control of weeds that infest wheat, to evaluate the phytotoxicity to culture and the ability to manage resistant weeds to the products used for this purpose. Thus, an experiment was conducted to evaluate the Phytotoxicity of clomazone associated or not to the dietholate safener applied on wheat. The experiment was conducted in a completely randomized design, arranged in a factorial scheme […]

The gene flux through pollen and glyphosate resistance genetic inheritance in sourgrass (Digitaria insularis) is important to understand this species spread, but it was not previously characterized. This information is essential for the understanding of herbicide resistance evolution rate in agriculture and the gene flux between resistant and susceptible biotypes in the field. Therefore, the objective of this research was to quantify resistance gene inheritance among glyphosate resistant and susceptible biotypes, through the determination of the level of susceptibility to […]

The aim of this study was to evaluate the residual effects regarding the maturing on morphoanatomic characteristics relating the sugarcane’s leaves. The experimental design was a randomized block in a split plot. The plots were constituted by the following varieties of sugarcane (SP80-3280 and SP80-1842) and the subplots of different maturings: Curavial 20 g bw ha-1 (sulfomethuron-methyl); Curavial 20g bw ha-1 + Roundup 0.15 L ha-1 (sulfomethuron-methyl + glyphosate); Ethrel 0.67 L ha-1 (etephon); Ethrel 0.67 L ha-1 + Roundup […]

Plant remediation has been reported as a promising technique for decontaminating soil herbicide residues. For hormonal herbicides there is difficulty in determining waste by bioassay technique due to the variation in growth in response presented by the indicator plant. The objective of this study was to evaluate the effect of doses of picloram through physiological characteristics of the bean in phytoremdiation soils with braquiaria. The experiment was arranged in greenhouse in the design of randomized blocks. Applied increasing doses of […]

The application of pesticides is affected by several factors. Among them, the time of application stands out, which can vary according to the target, the applied product and equipment used. This study aimed to evaluate hydraulic nozzles, adjuvant and fomesafen application time in controlling beggar’s tick. The treatments were arranged in a factorial 4x2x2, with the first factor consisting in four nozzles (API-11002; even (E) flat-fan, AD/D-11002; twin flat spray, AVI TWIN-11002; air induction (AI) twin flat spray-TQ, and APM-09502; […]

To ensure the maximum forestry productivity the adoption of efficient managements is essential. Weed control is very important, since presence of weeds can lead to competition for key factors to plant development. Weed interference can cause losses of up to 50 % in productivity and over 90 % of reduction in the profitability of forestry areas. Chemical control is widely used in weed management and about 30 % of the total costs of production and up to 50 % of […]

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), […]