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- Title
Volatilization of 1,3-Dichloropropene under Different Application Methods.
- Authors
Wang, D.; Yates, S. R.; Ernst, F. F.; Knuteson, J. A.; Brown, Jr., George E.
- Abstract
Atmospheric emission of volatile pesticides can be a significant source of air pollution. A field study was conducted to reduce 1,3-dichloropropene (1,3-D) emission by applying the chemical via subsurface drip irrigation with a reduced dosage (4.7 g m-2 or 47 kg ha-1). Comparisons were made between a shallow drip application with the plot covered with a polyethylene film, a deep drip application and a conventional shank injection (at 11.2 g m-2) with the plots left as bare soil surface. For each treatment, seven replicated active flux chambers were used continuously to measure 1,3-D loss until no measurable emission was found. Results indicated that total 1,3-D emission loss was over 90% for the shank injection, and 66 and 57% for the shallow and deep drip plots, respectively. The emission loss was extremely high for shank injection since about 80% were lost from the bed furrows where the slanted shanks left uncompacted fractures. On mass basis, the shank plot lost 10.4 g m-2, whereas the shallow- and deep-drip plots lost 3.1 and 2.7 g m-2, respectively. Applying 1,3-D using subsurface drip irrigation with reduced dosage has a great potential for emission reduction.
- Subjects
MICROIRRIGATION; IRRIGATION; PESTICIDES; POLLUTION; AIR quality; AIR pollution
- Publication
Water, Air & Soil Pollution, 2001, Vol 127, Issue 1-4, p109
- ISSN
0049-6979
- Publication type
Article
- DOI
10.1023/A:1005299632176