C. D. Martin, J. Baker, D. Erbach
1978
Citations
3
Influential Citations
58
Citations
Journal
Transactions of the ASABE
Abstract
ABSTRACT IN a laboratory study, herbicides, cyanazine (2-[[4-chloro-6-(ethylamino)-s-triazin-2-yl] amino]-2-methyl propionitrile), alachlor (2-chloro-2', 6' -diethyl-N-(methoxymethyl) acetanilide), atrazine (2-chloro-T-ethylamino)-6-(isopropylamino)-s_-triazine), and propachlor (2-chloro-N-isopropylacetanilide), were applied (0.4 and 1.8 kg/ha) to corn {Zea mays L.) residue, which in turn was subjected to simulated rain-fall. Concentrations and amounts of herbicides washing off with time were measured. Concentrations in initial washoff water were high for all herbicides (^9 ppm for the high application rate). Concentrations decreased rapidly with time; approximately the same amount washed off with the first 0.5 cm of water as did with the next 3.0 cm of water. Mass balances of the applied herbicides showed that most of the herbicide washed off; little was retained by the corn residue with the exception of cyanazine. Unexplained losses of the other herbi-cides indicated the possibility of volatilization occurring between application of herbicides and application of washoff water about 12 h later.