Weed Management Handbook

ethofumesate (Ethotron SC)

Rate Preemergence: 0.5 to 1 lb ai/A (16 to 32 fl oz/A) depending on soil texture. Weed control diminishes in fine-texture soils and soils with high organic matter.

Time Apply after planting and activate with at least 1inch water.

See:

Site Preparation, Stale Seedbeds, and Directed Nonselective Applications

bentazon (Basagran 5L)

Rate 0.5 to 1 lb ai/A (0.8 to 1.6 pints/A) depending on size of weed

Time Apply to small, rapidly growing small annual broadleaf weeds. Not effective if temperature drops below 50°F at night and if daytime does not exceed 70°F. Adjust rate depending on expected weather conditions: more for cold days, less for hot days.

clomazone (Command 3ME)

Rate 0.5 lb ai/A (1.3 pints/A Command 3E). Use lower rate on coarse soils and the higher rate on fine soils.

Time After planting and before weed emergence.

clethodim (Prism; Select 2C in Oregon only)

Rate 9 to 16 fl oz/A for annual grasses; 12 to 16 oz/A for perennial grasses at 0.25% v/v

Time Apply to actively growing grasses at recommended weed heights.

Remarks Add non-ionic surfactant (NIS) at 0.25% v/v. Maximum 4 applications or 64 fl oz/A per year. Preharvest interval is 14 days.

bensulide (Prefar 4-E)

Cantaloupe, cucumber, winter and summer squash, and watermelon

Rate 5 to 6 lb ai/A (5 to 6 quarts/A Prefar)

See:

Site Preparation, Stale Seedbeds, and Directed Nonselective Applications

clethodim (Select 2EC; Prism in Oregon only; or Select Max)

Rate 0.094 to 0.125 lb ai/A (6 to 8 fl oz/A Select 2EC; 9 to 16 fl oz/A Select Max). Consult label for rate required to control different grasses.

Time Apply to actively growing grasses at recommended weed heights.

Remarks Add crop oil concentrate as described on label. Do not exceed 8 fl oz/A per season.

bensulide (Prefar 4-E)

Celery only

Rate 5 to 6 lb ai/A (5 to 6 quarts/A)

Time Preplant-incorporate to the optimum depth of 1 inch; deeper than 2 inches reduces weed control.