Herbicide Recommendations for Forage Legumes (Direct Seeded): Postemergence Broadleaf Herbicides

Pub 75: Guide to Weed Control > Forage Crops > Herbicide Recommendations for Forage Legumes (Direct Seeded): Postemergence Broadleaf Herbicides

Excerpt from 2010-11 Publication 75, Guide to Weed Control, Order this publication

Precautions

For alfalfa seed production only.
Apply after third trifoliate stage of alfalfa.
Top growth of nutsedge and Canada thistle are controlled and field bindweed may be suppressed by 2 applications of 1.75 L/ha (0.7 L/ac), 10 days apart.
Cool weather or drought may reduce control.
Reduce rate of oil concentrate to 1 L/ha (0.4 L/ac) under abnormally hot and humid weather conditions or temporary crop injury may occur.

**Embutox, Caliber or Cobutox 625**
Trade Name	Embutox or Caliber or Cobutox 625
Active Ingredient	2,4-DB
Formulation	625 g/L
Rate per hectare (active)	1.1 to 1.4 kg/ha
Rate per hectare (product)	1.75 to 2.25 L/ha
Rate per acre (product)	0.7 to 0.9 L/ac

Precautions

Apply in at least 150 L/ha (60 L/ac) water, when alfalfa, bird's-foot trefoil or clovers are in the 1-4 leaf stage and seedling forage grasses are at the 2-4 leaf stage.
Do NOT graze or cut legumes for hay within 30 days of treatment.
NOT intended for grass forage crops grown for hay or grazing in the year of application.
Do NOT apply to crops grown for seed.
Do NOT apply under drought conditions.
2,4-DB usually suppresses legume growth for a period of 2-3 weeks.
Severe injury to legumes may occur under drought, high temperature or other stress conditions.

**Clovitox Plus or Tropotox Plus or Topside**
Trade Name	Clovitox Plus	Topside	Tropotox Plus
Active Ingredient	MCPB/MCPA	MCPB/MCPA	MCPB/MCPA
Formulation	400 g/L (15:1)	400 g/L (15:1)	400 g/L (15:1)
Rate per hectare (active)	1.1 to 1.7 kg/ha	1.1 to 1.7 kg/ha	1.1 to 1.7 kg/ha
Rate per hectare (product)	2.75 to 4.25 L/ha	2.75 to 4.25 L/ha	2.75 to 4.25 L/ha
Rate per acre (product)	1.1 to 1.7 L/ac	1.1 to 1.7 L/ac	1.1 to 1.7 L/ac

Precautions

Apply when clovers are at the unifoliate to the 4th trifoliate leaf stage and seedling forage grasses are at the 2-4 leaf stage.
Clovers may be suppressed for 2-3 weeks.
Do NOT exceed 3.5 L/ha of Topside for seedling forage grasses
Do NOT apply Topside and Tropotox Plus in less than 150 L/ha (60 L/ac) of water.
Do NOT apply Clovitox Plus in less than 175 L/ha (70 L/ha) of water.
Do NOT apply Clovitox Plus when temperatures exceed 27°C.
Do NOT apply under drought conditions.
Do NOT graze or cut for forage in the year of application.

Crops