Verdict Powered By Kixor
For use in field corn (grain, seed, silage), popcorn, sweet corn, grain sorghum, and soybean
Verdict herbicide is a selective residual preemergence herbicide for controlling most annual grass weeds, annual broadleaf weeds, and sedges in field corn, popcorn, sweet corn, grain sorghum, and soybean (refer to Table 1 for a list of weeds controlled preemergence). Residual preemergence applications of Verdict must be activated by at least 1/2 inch of rainfall or sprinkler irrigation before weed seedling emergence. When Verdict is not activated, a labeled postemergence herbicide or cultivation may be needed to control weed escapes. Verdict also provides contact burndown of many broadleaf weeds (refer to Table 2 for a list of weeds controlled by a burndown application). An adjuvant (refer to Additives section for details) is required with Verdict for optimum broadleaf burndown activity. Burndown applications of Verdict should be made when broadleaf weeds are small and actively growing. Burndown activity may be slowed or reduced under cloudy and/or foggy or cooler weather conditions, or when weeds are growing under drought or other stress conditions. When targeting dense weed populations
and/or larger broadleaf weeds, use a higher application rate within an application rate range and/or higher spray volumes. Angling nozzles forward (to 45 degrees) may improve penetration of denser weed canopies. Tank mixtures with contact herbicides (e.g. carfentrazone, paraquat) may reduce the burndown activity of Verdict.
Mode of Action
Verdict herbicide combines the two active ingredients:
saflufenacil, a potent inhibitor of protoporphyrinogenoxidase belonging to herbicide mode-of-action Group 14 (WSSA)/Group E (HRAC), and dimethenamid-R
a chloroacetamide belonging to the herbicide mode-of-action Group 15/Group KJ. Saflufenacil is rapidlyabsorbed by roots and foliage. Following inhibition of the
protoporphyrinogen-oxidase, plant death is the result of membrane damage. Under active growing conditions, susceptible emerging weed seedlings usually develop chlorotic and necrotic injury symptoms within hours and die within a few days. Susceptible germinating weed seeds will usually die as they reach the soil surface or shortly after emergence. Dimethenamid-P is a root-and-shoot inhibitor that controls susceptible weed seedlings before or soon after they emerge from the soil.
While weed resistance to protoporphyrinogen-oxidaseinhibiting herbicides is relatively infrequent, populations of resistant biotypes are known to exist. Resistance management practices include:
1. Following labeled application rate and weed growth stage recommendations
2. Avoiding repeated applications of herbicides with the same mode of action
3. Utilizing tank mixes and sequential applications with other effective herbicides possessing different modes of action
4. Using crop rotation so that crop competition, tillage or herbicides with alternative modes of action can be used to control weed escapes
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