Abstract: Background: Benghal dayflower is a weed widely distributed in Brazil, known for its tolerance to glyphosate, requiring the use of alternative herbicides and more complex control strategies. Objective: Evaluate different auxinic herbicides in combination with glyphosate for the control of Benghal dayflower and assess the efficacy of glufosinate alone or in combination with PPO inhibitors in sequential applications. Methods: Two experiments were conducted in Ponta Grossa (PR-Brazil), using a randomized block design. The first experiment evaluated different auxinic herbicides […]

Biotech soybeans called Roundup Ready (RR) are tolerant to the lethal effects of glyphosate herbicides, so traditional desiccation options are not sufficient to manage these plants. The objective of this study was to evaluate the efficacy of herbicide interaction in the control of RR soybean plants and the selectivity in the maize crop. The experiment was conducted in a completely randomized design, in a greenhouse with soybean (RR) and corn plants. The treatments consisted of the combination of the herbicides […]

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 […]

Ryegrass is an important weed in maize crops and winter cereals. The emergence of glyphosate-resistant biotypes, the main herbicide used in the Brazilian agricultural system, and the ability of natural reseeding, have raised the need to seek alternatives to minimize seed bank replenishment of this species. The objective of this study was to evaluate the effect of herbicide application at different growth stages of glyphosate-sensitive ryegrass plants on the viability of seeds from these plants. To this end, ryegrass plants […]