Adjuvants contribute to change the types of impact and thus the amount of spray retained by the leaves of the treated plant. We have performed tests of retention on barley plants on BBCH 12 stage and small pieces of barley leaves at the same stage of growth. Spraying was done in three ways: water without adjuvant, water with Break-Thru® S240 and water with Li700®. The three slurries of fluorescein contained in an amount of 0.2 g / l. Fluorescein retained by the leaves in both cases is then measured by a spectrofluoremeter.The retention tests on whole plants show that it is tripled by the first adjuvant and doubled by the second. On the other side, on small pieces of barley leaves, the amount was increased by the use of surfactants but not to the same extend. This study concluded that the use of adjuvants in spray pesticides increases the amount of retention as a function of leaf area and the type of adjuvant.
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机译：佐剂有助于改变影响的类型，从而改变被处理植物的叶片保留的喷雾量。我们已经在BBCH 12阶段的大麦植物和同一生长阶段的大麦小叶上进行了保留测试。喷涂以三种方式进行：不加佐剂的水，使用Break-Thru®S240的水和使用Li700®的水。三种荧光素浆料的含量为0.2 g / l。然后用荧光分光光度计测量两种情况下叶片中保留的荧光素。对整株植物的保留测试表明，第一种佐剂将其增加了两倍，第二种佐剂将其增加了一倍。另一方面，在大麦小片上，通过使用表面活性剂可以增加数量，但幅度不大。这项研究得出的结论是，在喷雾农药中使用佐剂会增加保留量，这是叶面积和佐剂类型的函数。
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