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The aim of this work was to analyze the interactions between adjuvant and the hydraulic nozzle in glyphosate drift control. Firstly, the droplet spectrum was evaluated using a completely randomized design (DIC) in a split plot, evaluating four application solutions (plots): water; water + mineral oil; water + glyphosate; water + mineral oil + glyphosate and three nozzle spray models (subplots): simple (SL); double (DL) and double with air induction (DLI), with six repetitions. The diameter of the volumetric median was determined; droplet density; relative amplitude and the potential risk of drift. In the following stage the drift was quantified in a wind tunnel, using the sub-subdivided DIC, being evaluated the four application solutions (parcels), the three nozzle spray models (subplots), in two wind speeds (sub-plots): 1.0 and 2.0 m s-1, with four repetitions. Regardless of the application solution, the DL tip presented the highest drift values, followed by SL and DLI, respectively. The application solution water + mineral oil + glyphosate, provided the lowest drift values for all hydraulic tips evaluated. The interaction of glyphosate with mineral oil, applied with the DLI tip, has the potential to reduce drift in the field. 332 Vieira et al./Interações entre adjuvante.../v34n3p331-340 (2019)

INTERAÇÕES ENTRE ADJUVANTE E PONTAS HIDRÁULICAS NO CONTROLE DA DERIVA DE GLIFOSATO