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Show Plant specialist gives tips to control weeds CEDAR CITY -Plants are now moving food stores into their roots to carry over the winter, and farmers and gard-ners gard-ners can take advantage of that movement by applying herbicide to control hard-to-kill perennial weeds. Rick Chase, extension weed control specialist, Utah State University, said to get effective control the herbicide must be applied soon. It needs to be on the weeds four or five days before a hard killing frost hits to kill the weed vegetation. The herbicide must have enough time to move into the roots. It can be applied after a mild frost and still be effective. For home gardens, Chase recommeded spraying the bindwed with Roundup (glyphosate) mixed three ounces (six tablespoons) per gallon. That's enough to cover 1,000 square feet. Spray enough to wet the leaves but not to run off. Seek a time allowing 8 to 12 hours free of rain. Be particularly careful to not get any of the herbicide her-bicide on leaves of plants you don't want to kill. It can even cause havoc to young trees and shrubs if it gets on the tender bark. Farmers with bindweed bind-weed in the field can get good control now by applying a gallon of Roundup per acre. It will kill all vegetation yet leave no residue in the soil. On fields where farmers far-mers will be planting grain next year, they can get good control at less cost by applying 1 quart of Banvel (dicamba) plays two to three quarts of 2,4-D per acre. Don't apply Banvel where a crop other than grain is to be planted next year as enough residue will be left in the soil to harm the crop, Chase cautioned. He advised gardeners and farmers to not expect 100 percent control of bindweed with one spraying. On trials conducted by USU Extension Ex-tension Service, 85 to 90 percent control has been obtained quite consistently. con-sistently. To get rid of bindweed, consistent control will be needed for several yers. Keep in mind the seeds that have fallen to the soil. Chase said it is very important to get the seedlings that germinate next spring before they become established. |