000			02795nab a2200301 i 4500
003			BR-BrBNA
005			20230928185845.0
008			230807b2020 bl.ar|pooa||| 00| 0 eng |
040			_aBR-BrBNA _beng
072			_aH60
100			_aGodinho Junior, J.D.
100			_aVieira, L.C.
100			_aRuas, R.A.A.
100			_aCarvalho Filho, A.
100			_aFaria, V.R.
100			_aGod, P.I.V.G.
245			_aSpray nozzles, working pressures and use of adjuvant in reduction of 2,4-D herbicide spray drift
500			_aPublicação on-line; 27 ref.; 5 tables; 2 illus.; Summary (En)
520			_a ABSTRACT Background: The study of the interactions between equipment, application methods, and spray mixtures is fundamental to optimize the application of pesticides. The determination of the best combination of these factors can reduce the drift during the application of the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D). Objective: The objective this paper is to study the influence of nozzle models, working pressures, and surfactant adjuvant in reducing the drift of 2,4-D. Methods: The spectrum of nozzle drops was determined for a conventional flat jet; flat jet with air induction; double plane jet with air induction; deflector flat jet with air induction; and an empty cone with air induction at pressures of 200, 300, 400, and 500 kPa. This was quantified in a wind tunnel with four drifts: water; water + surfactant adjuvant; water + 2,4-D; and water + 2,4-D + surfactant adjuvant, applied by the five nozzle models at four working pressures. The data was evaluated by analysis of variance and, when significant, by the Tukey test and regression at 5% significance level. Results: The interactions between the nozzle models, working pressure, and spray mixture directly influenced the 2,4-D drift. Conclusions: The use of surfactant adjuvant must be carried out carefully, according to the nozzle model, working pressure, and spray mixture. The conventional single fan jet nozzle is more sensitive to increased working pressure and has a high potential to cause drift compared with the models with air induction. Keywords: agricultural mechanization application technology quality control air induction droplet size wind tunnel
650			_aHERBICIDA
650			_aMECANIZAÇÃO AGRÍCOLA
650			_aMÉTODO DE APLICAÇÃO
650			_aCONTROLE DE QUALIDADE
773	0		_0886 _91817 _dLondrina-PR : Sociedade Brasileira da Ciência das Plantas Daninhas, 1978 _o2023-031024 _tPlanta Daninha (Brazil) _x0100-8358; 1806-9681 (on-line) _gv. 38 p. 1-7; (2020) _wBR2023000843
856			_uhttps://www.scielo.br/j/pd/a/HF335gtdcZJb9v8bRnJxz5K/?format=pdf&lang=en
942			_cAnalítica
999			_c9757 _d9757