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Control of cheat grass and downy brome with SMY 1500 and SMY 1500 plus metribuzin


, : Control of cheat grass and downy brome with SMY 1500 and SMY 1500 plus metribuzin. Proceedings, North Central Weed Control Conference (Vol.40): 20

Results of trials in wheat during 1982-85 with SMY 1500 (4-amino-6-(1,1-dimethylethyl)-3-(ethylthio)-1,2,4-triazin-5(4H)-one), an analogue of metribuzin, are summarized. Best control of Bromus spp. was obtained with 0.75 to 1 lb/acre on coarse soils and 1 to 1.5 lb/acre on fine soils, applied at the 2-tiller stage of Bromus. Incorporation pre-sowing is more effective than pre-em. treatment, when moisture is limited, but requires the higher rate.

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Related references

Smart, J.R.; Arnold, W.E., 1986: Downy brome (Bromus tectorum) and winter wheat response to SMY 1500 and metribuzin combinations. SMY 1500 [4-amino-6-(1,1-dimethylethyl)-3-(ethylthio)-1,2,4-triazin-5(4H)-one] applied at 1.12 and 1.4 kg/ha in Oct. 85 and Apr. 86 provided >83 and >88% control of B. tectorum, resp., whilst crop injury was negligable. Control levels increa...

Whitesides, R.; Swan, D., 1986: Metribuzin and ethyl metribuzin for downy brome control in winter wheat. Research progress report Western Society of Weed Science: 30-231

Westra, P., 1987: The effect of downy brome control with ethyl metribuzin and metribuzin on winter wheat yield. Research progress report Western Society of Weed Science: 18

Evans, J.; Gunnell, R., 1986: Evaluation of metribuzin and SMY-1500 for weed control in winter wheat. Research progress report Western Society of Weed Science: 35

Apley, K.L.; Claassen, M.M.; Russ, O.G., 1985: Cheat and winter wheat response to SMY 1500. In trials at 2 sites in 1984 and 1985, 1.7 kg SMY 1500 [4-amino-6-(1,1-dimethylethyl)-3-(ethylthio)-1,2,4-triazin-5(4H)-one]/ha pre-em. or post-em. controlled Bromus secalinus more effectively than 0.6 kg metribuzin/ha. Of 16 winter wheat cv. stud...

Ramsey, H.L., 1980: Performance of metribuzin for downy brome control in winter wheat grown in the northwest. Bromus tectorum is one of the most serious weeds in dryland winter wheat in the Pacific Northwest. Metribuzin applied at 0.25 and 5 lb/acre showed the maximum efficacy against B. tectorum between the 1-leaf and 3-tiller growth stages. Metribuzin a...

Shaw D.R.; Wesley M.T., 1991: Wheat triticum aestivum cultivar tolerance and italian ryegrass lolium multiflorum control with diclofop bay smy 1500 and metribuzin. In the field, 14 soft red winter wheat cultivars responded differently to 1.1 kg ai ha-1 diclofop, 1.7 kg ai ha-1 BAY SMY 1500, and 0.42 kg ai ha-1 metribuzin applied POST. Diclofop and metribuzin did not injure any cultivar more than 10% on a sil...

Shaw, D.; Wesley, M., 1991: Wheat (Triticum aestivum) cultivar tolerance and Italian ryegrass (Lolium multiflorum) in control with diclofop, BAY SMY 1500, and metribuzin. Weed technology: a journal of the Weed Science Society of America 5(4): 776-781

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