NN‐DIALLYL‐αα‐DICHLOROACETAMIDE AS AN ANTIDOTE FOR EPTC AND OTHER HERBICIDES IN CORN

Abstract

Summary. The efficacy of NN‐diallyl‐αα‐dichloroacetamide (R‐25788) as an antidote for reducing the injury of various herbicides in corn (Zea mays L.) was tested under controlled conditions in growth rooms. The application of R‐25788 to the soil as a pre‐plant incorporated treatment to corn significantly reduced the toxicity often out of twenty‐two herbicides tested. These ten herbicides were, in order of decreasing effectiveness of the antidote, EPTC, barban, sulfallate, vernolate, molinate, butylate, alachlor, pebulate, linuron and di‐allate. In quartz sand nutrient culture, R‐25788 was more effective as an antidote for barban applied to the foliage of corn than it was for barban applied to the roots. Le NN‐diallyl‐αα‐dichloroacétamide comme antidote de I'EPTC et autres herbicides dans le mais.

Comparative Activity and Selectivity of Herbicide Antidotes

“…As corn seed treatments (0.5% w/w) in soil ( Fig. Postemergence herbicide treatments were applied to the corn foliage 6-8 days after seeding when the corn seedlings were in the 2-3 leaf stage (12). However, at higher rates of EPTC (6.7-10.1 kg/ha), NA was much less effective than R-25788 for reducing EPTC injury to corn.…”

Responses of Several Corn (Zea mays) Cultivars and Weed Species to EPTC With and Without the Antidote R-25788

“…The antidote R-25788 was found more effective than 1,8-naphthalic anhydride in reducing corn injury due to EPTC (9). R-25788 in combination with EPTC eliminated injury symptoms in corn (7,8) and greatly increased yields (13). The highest yield was obtained with mixtures of verno late (S-propyl dipropylthiocarbamate) + R-25788 and atra zine [2 -chloro -4 -(ethylamino) -6 -(isopropylamino) -s -tri azine] .…”

Effects of Starch Xanthate and Sludge Polymer on the Initial Activity with Delayed Incorporation, Residual Activity, and Crop Safety of Several Herbicides

“…Delayed incorporation. The herbicides EPTC + (henceforth, + designates the addition of the crop protectant R-29148), butylate 4 " (S-ethyl diisobutylthiocarbamate), and trifluralin in their emulsifiable concentrate, starch xanthate, and sludge polymer formulations were soil-applied at rates of 3.4, 3.4, and 1.1 kg/ha, respectively. The herbicides were incorporated immediately or after 2, 20, or 200 h, or not incorporated.…”