ISSN:
1365-3180
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Summary. Studies were conducted to determine the effect of soil placement of EPTC, di-allate and propham (IPC) on oats. A technique called the‘envelope method’was used to make possible the separate exposure of coleoptiles, seed and roots of emerging oat seedlings to the various herbicides. EPTC at 1.0 ppm, di-allate at 2.0 ppm and propham at 3.0 ppm were all extremely toxic to oats through colcoptile uptake. Penetration of roots into treated soil, however, resulted in very little injury to the plant. Plants grew undamaged from seeds which had been allowed to imbibe for 36 hr in soil treated with EPTC at 1.0 ppm.Studies using radioactive EPTC indicated that both roots and coleoptiles readily absorbed EPTC from soil and that measurable amounts translocated both upward and downward. Under certain circumstances, as much unmetabolized EPTC could accumulate in roots as in shoots, even though less toxicity was noted from root exposure. This would indicate, that the differential sensitivity between roots and shoots is not due to differences in uptake, translocation, or metabolic breakdown. Rather it appears that the shoot is the major site of lethal action of EPTC in oats. Étude du placement de l'EPTC et d'autres carbamates dans le sol avec Avena saliva
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1365-3180.1965.tb00334.x
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