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1~-h) ROUNDUP (Glyphosate) Roundup can be applied anytime during the growing season when growing condi- tions are favorable and weeds have good foliage. The effectiveness of this com- pound is dependent on translocation from the point of foliage contact to other parts of the plant, therefore, it is important that the weed have foliage. Weeds that are only partially emerged, or have been cut off by tillage, will not be controlled. It is also important that the leaves be relatively clean and not covered with dust. Also, plants that are near maturity and hardened off, are less affected. Visible effects on most annual weeds occur within 2 to 4 days, but on most perennial weeds, may not be visible for 7 to 10 days. Visible effects are a gradual wilting and yellowing of the plant which advances to complete browning and desiccation. Rainfall occurring within 6 hours after application may reduce effectiveness. There is very little soil activating with Roundup. This herbicide mixes readily with water; use clean water. Avoid drift and follow the same safe and proper application techniques common for other foliage applied herbicides. Read and follow label directions. Roundup has been evaluated in Colorado on several of the troublesome perennial and noxious weeds. Almost consistently it has been most effective when applied to actively growing plants in the fall, 2 to 3 weeks before the first expected killing frost. In almost all cases, combinations of Roundup with Banvel have been more effective on perennial broadleaf weeds than Roundup alone and more economical. PERENNIAL WEEDS CANADA THISTLE: Apply 2 qts of Roundup plus 1 pt of Banvel per acre when the plants are at least 10" high or approaching bud stage. All treatments must be applied before frost. Wait 7 or more days after application before tillage. FIELD BINDWEED: Apply 2 qts of Roundup plus 1 pt of Banvel per acre when bind- weed is at or beyond full bloom. Allow 7 or more days after application before tillage. QUACKGRASS and JOHNSONGRASS: Apply 1 acre on Johnsongrass when quackgrass is 8" For best results on Johnsongrass, apply to reached the boot to head stage of growth a intensive tillage will improve results but after treatment. qt per acre on quackgrass and 2 qts per or more high and is actively growing. actively growing plants when most has td at least 18" high. Plowing or other should not be done sooner than 7 days OTHER WEEDS: Refer to the label for a list of other perennial weeds that can be controlled with Roundup or Roundup/Banvel combinations and for time of appli- cation and suggested rates. (3/83)