The maintenance of the productivity of commercial crops is dependent on the use of phytosanitary products, but information about the interaction between them when used in mixture is restricted. The objective was to evaluate the physical properties, droplet spectrum and the physicochemical compatibility of mixtures with different doses and mixtures of herbicides. The treatments consisted of combining a formulation of the herbicide glyphosate with two commercial products formulated with the herbicide atrazine. The syrups were evaluated by the static method […]

In recent years, a new form of weed control has emerged, contact control. The aim of this study was to compare different modes of application and doses of the herbicide glyphosate in soy. The experiment was carried out in a commercial soybean area in Sinop MT. The experimental design was a randomized block, with five replications and eight treatments. The 8 treatments were: Physical control, manual weeding with a hoe; Application with costal sprayer in doses of 0.7 and 1.4 […]

The objective of this research was to evaluate the injury to the development and yield of early cycle flooded rice cultivar (IRGA 430), caused by simulated glyphosate drift. The experiment was carried out in the field at the Experimental Station of the Rice – IRGA, in the 2016/17 season, and treatments were arranged in factorial scheme 3×2+1 whose factor A consisted of the glyphosate drift simulation with rates of 135; 270 and 540g ha-1 a.e.; the factor B of two […]

The objective, of this work, was evaluated the effect of carrier volume and use of activator adjuvant on the weed control and deposition of herbicide treatment with ioxynil + clethodim in onion plants. The experiment consisted by six treatments and five replications, organized in factorial scheme 2 x 3, that is a combination of two levels of adjuvant (with an without) with three application rates (100, 150 e 200 L ha-1). The treatments were applicate in post-emergence, after the onion […]

The herbicide sulfentrazone, used in sugarcane cultivation, is recommended for the control of eudicots and monocotyledons in pre-emergence and is also indicated for the control of Panicum maximum and Ipomea hederifolia. The research was carried out with the objective of verify the influence of the sulfrentazone herbicide with and without adjuvant on soil without straw cover under different periods without rainfall, associated to different application volumes, for the control of P. maximum and I. Hederifolia. The experimental design was a […]

Herbicides applications are usually held with specific environmental conditions that may influence the efficacy of these products. This research was conducted to evaluate the influence of application times of glyphosate and glyphosate + 2.4-D herbicides in Polygonum convolvulus weed control. The experiment was developed with vases arranged in field conditions. The treatments were constituted by glyphosate (960 g ha-1) and glyphosate + 2.4-D (960 + 335 g ha-1) herbicides, both applied in 25 and 9/26/2015, in 10:00 PM hour, 03:00 […]

Glyphosate is an agricultural pesticide of great importance in the world. In this sense, several studies have been developed in order to select adjuvants which elevate the efficacy of the product. Two experiments were performed with the goal to evaluate the efficacy of the glyphosate herbicide when associated to different experimental prototypes of agricultural adjuvants, elaborated from non-purified residue ofbiodiesel production. Gross residue from the biodiesel production was used, as well as its dilution in water, and addition of ammonium […]

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; […]

The use of ripeners has been common practice in sugarcane cultivation. The application of these products is often performed through aerial spraying, which increases the chances of molecules from the ripener drifting into other crops, such as corn. With the aim of studying possible phytointoxication in corn caused by ethephon drift, a field experiment was conducted in order to evaluate the effect of ripener sub-dosing when applied in the V4 and V8 development stages of corn cultivation. The experiment was set […]

Searching for renewable energy sources has motivated the development of biodiesel production units in Brazil. However, for biodiesel being considered fully sustainable, suitable destinations for its production waste should be found, especially for crude glycerin. Therefore, this work was developed to evaluate glyphosate herbicide efficacy on weed control when combined to different concentrations of non-purified residue of biodiesel production. Two experiments were carried out, one in an experimental plant nursery, using sourgrass (Digitaria insularis) as bioindicator, and another one in […]