Hassink Jan, Platz Klaus, Stadler Reinhold, Zangmeister Werner, Fent Gunnar, Möndel Martin, Kubiak Roland
BASF Aktiengesellschaft, Agricultural Centre, Limburgerhof, Germany.
Pest Manag Sci. 2007 Feb;63(2):171-9. doi: 10.1002/ps.1317.
The potential for short-range transport via air, i.e. volatilisation from the area of application and subsequent deposition on adjacent non-target areas, was investigated for the fungicide fenpropimorph in a wind tunnel system and under outdoor conditions in a higher-tier field study. Fenpropimorph 750 g L(-1) EC was applied post-emergence to cereal along with a reference standard lindane EC. Stainless steel containers of water were placed at different distances downwind of the application area to trap volatile residues during a study period of 24 h following application. Meteorological conditions in the wind tunnel as well as on the field were constantly monitored during the study period. The wind tunnel system was a partly standardised system on a semi-field scale, i.e. wind direction and wind speed (2 m s(-1)) were constant, but temperature and humidity varied according to the conditions outside. In the field experiment, the average wind speed over the 24 h study period was 3 m s(-1) and no rainfall occurred. Three different measuring lines were installed on the non-target area beside the treated field to cover potential variations in the wind direction. However, no significant differences were observed since the wind direction was generally constant. Fenpropimorph was detected in minor amounts of 0.01-0.05% of the applied material in the wind tunnel experiment. Even at a distance of 1 m beside the treated field, no significant deposition occurred (0.04% of applied material after 24 h). In the field, less than 0.1% of the applied fenpropimorph was detected at 0 m directly beside the treated field. At 5 m distance the deposition values were below 0.04%, and at 20 m distance about 0.01%. In general, the amounts of deposited fenpropimorph detected in the partly standardised wind tunnel system and the higher-tier field study were in good agreement.
通过空气进行短距离传输的可能性，即从施药区域挥发并随后沉积在相邻非靶标区域的情况，在风洞系统中以及在更高层次的田间研究的室外条件下，针对杀菌剂粉唑醇进行了调查。在谷物出苗后，将750克/升的粉唑醇乳油与参考标准林丹乳油一起施用于谷物。在施药后的24小时研究期内，在施药区域顺风方向不同距离处放置不锈钢水容器，以捕获挥发性残留物。在研究期间，持续监测风洞以及田间的气象条件。风洞系统是半田间规模的部分标准化系统，即风向和风速（2米/秒）恒定，但温度和湿度根据室外条件而变化。在田间试验中，24小时研究期内的平均风速为3米/秒，且未降雨。在处理过的田地旁边的非靶标区域安装了三条不同的测量线，以涵盖风向的潜在变化。然而，由于风向通常恒定，未观察到显著差异。在风洞试验中，检测到的粉唑醇量占施用药量的0.01 - 0.05%。即使在处理过的田地旁边1米处，也未发生显著沉积（2小时后为施用药量的0.04%）。在田间，在处理过的田地正旁边0米处，检测到的施用于粉唑醇的量不到0.1%。在5米距离处，沉积值低于0.04%，在20米距离处约为0.01%。总体而言，在部分标准化风洞系统中检测到的沉积粉唑醇量与更高层次的田间研究结果吻合良好。
