Millet is an annual hot season grass that has an upright and tall size, used as a food source in livestock and as a soil cover in the no-tillage system. As it is a culture of low economic value, information about it is rare. The objective of the work was to verify the selectivity of the herbicides atrazine and 2,4-D applied alone or in association at different times in the millet culture. The experiment was carried out in the field […]

The application of plant regulators reduces plant height without affecting the high quality of the treated area, without causing damage to the density of plants and without causing visible damage to the lawn. Thus, the objective was to evaluate the use of the herbicide fluazifop-p-butyl as a growth regulator for three species of grasses (bahia grass – Paspalum notatum; emerald – Zoysia japonica and blanket grass – Axonopus compressus) depending on the luminosity. The work was carried out in a […]

Corn is an important crop for agriculture, playing a fundamental role in animal and human feed and energy production. Therefore, the purpose of this study was evaluate the effectiveness, selectivity and effects on corn physiological and productive characteristics after herbicide application either isolated or in tank mix. The procedure adopted was randomized blocks design, with four replications each. The treatments, glyphosate, [atrazine + simazine], nicosulfuron, mesotrione, tembotrione, plus a weeded control were used alone or in a tank mixture. It […]

Recently, soybean cultivated area has risen in Brazil and so had total production. In the Rio Grande do Sul state (RS), soybean production is also increasing and its grown after beef production during the cold season, a production model that contributes to improve land usage during the twelve months of the year, increasing farmers’ income and, when well handled, it can also contribute to integrated weed management. Despite that, the presence of hard-to-control broadleaved weeds like Amaranthus hybridus in RS soybean fields […]

In part of the Midwest region of Brazil, cotton has been grown in second crop, sown after soybean harvest. In these areas, the occurrence of voluntary soybean plants has been common, interfering in the development of cotton crop. In this sense, the objective of this work was to evaluate the effectiveness of herbicides applied post-emergence in cotton for the control of voluntary soybeans containing different transgenics. Two experiments were carried out in a greenhouse, using a soybean cultivar with Liberty […]

Repetitive adoption of glyphosate and in high rates have selected resistant biotypes of weeds, as well as it has contributed to selecting glyphosate-tolerant species. The most common solution for that is the inclusion of alternative herbicides in the system of production, applied isolated or in the tank mixtures. Therefore, this work was developed with the objective of evaluating the efficacy and interaction of glyphosate-saflufenacil tank mixtures for controlling two weed species. Two independent experiments were developed, evaluating one monocotyledonous weed […]

Donkey-tailed grass is a poaceae, considered a recent weed in soybean crops and its increasing the infestation’s levels and the difficulty of control. Thus, this study aimed to evaluate the effectiveness of different doses of herbicides applied alone or mixed, to control dunk-grass at different stages of development. Three experiments were conducted, first one in greenhouse with new plants and two experiments in the field with clumps. The treatments were glyphosate; fluazifop; sethoxydim; fenoxaprop; clethodim; quizalofop; haloxyfop; pinoxaden, nicosulfuron; glufosinate […]