Spray adjuvant characteristics affecting agricultural spraying drift

Engenharia Agrícola

Rone B. De Oliveira¹  Ulisses R. Antuniassi¹  Marco A. Gandolfo¹ 

关键词: droplet size;    wind tunnel;    experimental methods;    correlations;    multivariate analysis;    tamanho de gotas;    túnel de vento;    métodos experimentais;    correlações;    análise multivariada;   

DOI  :  10.1590/1809-4430-Eng.Agríc.v35n1p109-116/2015

来源: SciELO

【 摘 要 】

This study defined the main adjuvant characteristics that may influence or help to understand drift formation process in the agricultural spraying. It was evaluated 33 aqueous solutions from combinations of various adjuvants and concentrations. Then, drifting was quantified by means of wind tunnel; and variables such as percentage of droplets smaller than 50 μm (V50), 100 μm (V100), diameter of mean volume (DMV), droplet diameter composing 10% of the sprayed volume (DV0.1), viscosity, density and surface tension. Assays were performed in triplicate, using Teejet XR8003 flat fan nozzles at 200 kPa (medium size droplets). Spray solutions were stained with Brilliant Blue Dye at 0.6% (m/ v). DMV, V100, viscosity cause most influence on drift hazardous. Adjuvant characteristics and respective methods of evaluation have applicability in drift risk by agricultural spray adjuvants.

【 授权许可】

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