| |
| Web URL(s): | https://dl.sciencesocieties.org/publications/jeq/pdfs/19/1/JEQ0190010119
Last checked: 12/12/2016
Requires: PDF Reader
Notes: Item is within a limited-access website |
|---|
| Publication Type:
| Refereed |
|---|
| Author(s): | Wauchope, R Don.;
Williams, Randall G.;
Marti, Luz R. |
|---|
| Author Affiliation: | USDA-ARS, Southeast Watershed Research Laboratory, Tifton, GA. |
|---|
| Title: | Runoff of Sulfometuron-Methyl and Cyanazine from Small Plots: Effects of Formulation and Grass Cover. |
|---|
| Source: | Journal of Environmental Quality. Vol. 19, No. 1, January-March 1990, p. 119-125. |
|---|
| Publishing Information: | Madison, Wisconsin: American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America |
|---|
| Keywords: | TIC Keywords: Cyanazine; Sulfometuron; Surface runoff; Formulations; Application rates; Paspalum notatum; Cynodon dactylon
|
|---|
| Abstract/Contents: | "To determine the effects of application rates, grass cover and formulation type on herbicide losses in runoff, we applied 4.5 kg/ha cyanazine (2-[[4-chloro-6-(ethylamino)-1,3,5-triazine-2-yl)] amino]-2-methylpropanenitrile) with 0.4 kg/ha sulfometuron-methyl (methyl-2[[[[(4,6-dimethyl-2-pyrimidinyl)amino] carbonyl] amino] sulfonyl] benzoate) to 1.2 by 2.4 m plots, using suspension concentrate (SC) and dispersible granule (DG) formulations of cyanazine, and SC and emulsifiable concentrate (EC) formulations of sulfometuron-ethyl. The plots were established on a Tifton loamy sand soil (fine-loamy, siliceous, thermic Plinthic Paleudults) and had 3% slope. The plots were bare or covered with a mixed stand of common Bermudagrass [Cynodon dactylon (L.) Pers.] and Bahiagrass (Paspalum notatum Flugge var. suarae Parodi). On the day after the herbicides were applied, we simulated rainfall events of 69 mm/h intensity until 2 mm of runoff had occurred. The runoff was analyzed for sediments and herbicides. The bare plots required 1/3 less rain to produce the same amount of runoff and yielded twice as much sediment as the grassy plots. However, losses of all formulations were 1 to 2% of the amounts applied regardless of grass cover and even though cyanazine rates were 11 times that of sulfometuron-methyl. Total losses of all formulations were sensitive to the length of time between rainfall initiation and runoff initiation, indicating that leaching made herbicide unavailable for runoff. These results suggest that, for these formulations under conditions of similar runoff volumes, losses of pesticides are a fairly constant fraction of the amounts applied, with or without grass cover. For intense storms where the amount of rainfall is similar, chemical runoff from the grassed plots was predicted by computer simulation to be less than half of that from bare soil." |
|---|
| Language: | English |
|---|
| References: | 22 |
|---|
| See Also: | Other items relating to: FILTER
Other items relating to: RUNOFF |
|---|
| Note: | Figures
Tables |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Wauchope, R. D., R. G. Williams, and L. R. Marti. 1990. Runoff of Sulfometuron-Methyl and Cyanazine from Small Plots: Effects of Formulation and Grass Cover.. J. Environ. Qual. 19(1):p. 119-125. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=16977 |
| If there are problems with this record, send us feedback about record 16977. |
| Choices for finding the above item: |
|---|
| Web URL(s):
https://dl.sciencesocieties.org/publications/jeq/pdfs/19/1/JEQ0190010119
Last checked: 12/12/2016
Requires: PDF Reader
Notes: Item is within a limited-access website |
| 
MSU catalog number: S 900 .J6 |
| Find from within TIC:
Digitally in TIC by record number. |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |
