Drift from the Use of Hand-Held Knapsack Pesticide Sprayers in Boyaca (Colombian Andes)

作者：Garcia Santos Glenda^*; Feola Giuseppe; Nuyttens David; Diaz Jaime

来源：Journal of Agricultural and Food Chemistry, 2016, 64(20): 3990-3998.

DOI：10.1021/acs.jafc.5b03772

• drift curve
• knapsack sprayer
• Manual Tecnico Andino
• developing countries
• mountain region
• Andean region
• tropical soils
• potato production

Offsite pesticide losses in tropical mountainous regions have been little studied. One example is measuring pesticide drift soil deposition, which can support pesticide risk assessment for surface water, soil, bystanders, and off-target plants and fauna. This is considered a serious gap, given the evidence of pesticide-related poisoning in those regions. Empirical data of drift deposition of a pesticide surrogate, Uranine tracer, within one of the highest potato-producing regions in Colombia, characterized by small plots and mountain orography, is presented. High drift values encountered in this study reflect the actual spray conditions using hand-held knapsack sprayers. Comparison between measured and predicted drift values using three existing empirical equations showed important underestimation. However, after their optimization based on measured drift information, the equations showed a strong predictive power for this study area and the study conditions. The most suitable curve to assess mean relative drift was the IMAG calculator after optimization.

• 出版日期2016-5-25