Flax - Herbicide Recommendations for Flax: Postemergence Grass and Broadleaf Herbicides

Herbicide Recommendations for Flax: Postemergence Grass and Broadleaf Herbicides

Pub 75: Guide to Weed Control > Other Field Crops > Herbicide Recommendations for Flax: Postemergence Grass and Broadleaf Herbicides

Excerpt from 2008 Publication 75, Guide to Weed Control, Order this publication


Trade Name	Poast Ultra	+ Buctril M	or + Badge, Logic M, Mextrol	+ Merge
Active Ingredient	sethoxydim	+ bromoxynil/MCPA	or + bromoxynil/MCPA	+ surfactant /solvent
Formulation	450 g/L	560 g/L (1:1)	450 g/L (1:1)
Rate per hectare (active)	0.15 to 0.2 kg/ha	0.56 kg/ha	0.56 kg/ha	1 L/ha
Rate per hectare (product)	0.32 to 0.47 L/ha	1 L/ha	1.25 L/ha	1 L/ha
Rate per acre (product)	0.13 to 0.19 L/ac	0.4 L/ac	0.5 L/ac	0.4 L/ac

Precautions

Apply when flax is 5-10 cm high before weeds have developed beyond the 4-leaf stage.
Do NOT use if the daytime temperature is over 29°C.
Apply using 100-200 L/ha of water (40-80 L/ac).

**Poast Ultra + MCPA Amine + Merge**
Trade Name	Poast Ultra	+ MCPA Amine	+ Merge
Active Ingredient	sethoxydim	+ MCPA	+ surfactant/solvent
Formulation	450 g/L	500 g/L
Rate per hectare (active)	0.15 to 0.2 kg/ha	0.45 to 0.55 kg/ha	1 L/ha
Rate per hectare (product)	0.32 to 0.47 L/ha	0.84 to 1.1 L/ha	1 L/ha
Rate per acre (product)	0.13 to 0.19 L/ac	0.34 to 0.44 L/ha	0.4 L/ac

Precautions

Flax may be treated when 5 cm tall to bud stage.
Best weed control is obtained if the application is made when the weeds are small (approximately 5 cm tall).
Apply using 100-200 L/ha of water (40-80 L/ac).

**Select + Buctril M or Badge, Logic M, Mextrol + Amigo**
Trade Name	Select	+ Buctril M	or + Badge, Logic M, Mextrol	+ Amigo
Active Ingredient	clethodim	+ bromoxynil/MCPA	or + bromoxynil/MCPA	+ surfactant
Formulation	240 g/L	560 g/L (1:1)	450 g/L (1:1)
Rate per hectare (active)	0.045 kg/ha	0.56 kg/ha	0.56 kg/ha	0.5% v/v
Rate per hectare (product)	0.19 L/ha	1 L/ha	1.25 L/ha	5 L/1000 L
Rate per acre (product)	0.076 L/ac	0.4 L/ac	0.5 L/ac	5 L/1000 L

Precautions

Apply when flax is 5-10 cm high and weeds are in the seedling stage for best results.
Do NOT use if daytime temperature is over 25°C.