Effects of No-Till and Fall Plowing on Pesticide Movement in Runoff and Tile Drainage.

摘要

The present study examines the effects of no-till versus fall moldboard plowing in a corn-soybean rotation on losses in surface runoff and tile drainage of four of the most widely used herbicides: atrazine, alachlor, metolachlor and metribuzin. The study is being conducted on an experimental site in which runoff and tile drainage water quality have been continuously monitored for 15 years. The results for 1987-1989 are presented. Losses in runoff and tile drainage of the four herbicides were in the order: atrazine > alachlor > metolachlor > metribuzin.