کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4415709 1307756 2006 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Drift of 10 herbicides after tractor spray application. 2. Primary drift (droplet drift)
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Drift of 10 herbicides after tractor spray application. 2. Primary drift (droplet drift)
چکیده انگلیسی

In the present study the primary drift of 10 herbicides was investigated in five field experiments, and the amount deposited per surface area was quantified outside the application area using simple passive dosimeters. In addition, samples for measuring a possible background value were taken upwind of the sprayed field. Deposits of spray drift were common to all spray equipment and spray was detected up to 150 m off-target. There were deposits of 0.1–9% of the applied amount close to the sprayed field (up to 2 m). But 3 m from the spraying zone deposits were reduced to 0.02–4%. The amounts decreased exponentially when moving away from the field. The differences in drift could be described mainly by the different drop sizes, the wind velocity, the formulation and the filtering effect of vegetation on the sampling area. The tendency of the active ingredients to evaporate could also have an, although less important, influence on the drift. This is a factor, which ought to be exposed to a further study. The findings supported that it is the physical properties of the spray and the conditions of application (i.e. equipment and meteorology) that are the primary determinants of primary drift rather than the chemical property of the pure active ingredients.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 64, Issue 5, July 2006, Pages 778–786
نویسندگان
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