PERSISTENCE AND CARRY-OVER OF METRIBUZIN AND TRIALLATE IN SUBARCTIC SOILS
Persistence of metribuzin and triallate in soil was studied near Delta Junction, Alaska from 1982 to 1985. Metribuzin was applied at 0.3, 0.6 and 1.3 kg ha −1 and triallate was applied at 0.7, 1.4 or 2.8 kg ha −1 in 1982. Spring barley, oats, spring wheat and rapeseed were planted in the plots in 19...
| Published in: | Canadian Journal of Soil Science |
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| Main Authors: | , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Canadian Science Publishing
1988
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.4141/cjss88-082 https://cdnsciencepub.com/doi/pdf/10.4141/cjss88-082 |
| Summary: | Persistence of metribuzin and triallate in soil was studied near Delta Junction, Alaska from 1982 to 1985. Metribuzin was applied at 0.3, 0.6 and 1.3 kg ha −1 and triallate was applied at 0.7, 1.4 or 2.8 kg ha −1 in 1982. Spring barley, oats, spring wheat and rapeseed were planted in the plots in 1983 and 1985 to determine whether herbicide residues would decrease populations or yield of rotational crops. Application rate had no effect on degradation rate of metribuzin or triallate. Twelve percent of the metribuzin and 61% of the triallate applied still remained after 115 d. Three years after application, 2% of the metribuzin and 14% of the triallate applied still remained. In 1983, oat stands and yields in plots where triallate was applied at 2.8 kg ha −1 were lower than control plots. In 1985, there were no carry-over effects. Key words: Herbicide persistence, metribuzin, triallate, subarctic soils |
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