2008 North Dakota Weed Control Guide
W-253, January 2008
R. K. Zollinger, NDSU Extension Weed Specialist
SUGARBEET
|
Herbicide | Product/A
(ai/A) | Weeds | When to Apply |
Remarks and Paragraphs Glyphosate
| 0.38 to 1.5 lb ae
| See Remarks. Emerged grass
and broadleaf
weeds.
| Preplant or
anytime prior to
crop emergence.
| lb ae/gal lb ai/gal 0.38 ae 0.75 ae 1.125 ae 1.5ae | 3 4 = 16 fl oz 32 fl oz 48 fl oz 64 fl oz 4/4.17 5.4 = 12 fl oz 24 fl oz 36 fl oz 48 fl oz 4.5 5.5 = 11 fl oz 22 fl oz 32 fl oz 44 fl oz 5 6.1 = 10 fl oz 20 fl oz 30 fl oz 40 fl oz
Paraquat | RUP 2 to 4 pt 2SL | 1.3 to 2.7 pt 3SL (0.5 to 1 lb) Emerged annual
grasses and
broadleaf weeds.
| Contact, non-selective, herbicide; thorough coverage
required. No soil residual activity. Apply with NIS. | A4 Q3
|  Far-Go(triallate) 1.5 qt EC
15 lb 10G | (1.5 lb) Wild oat.
|
PPI. | Incorporate immediately after application with a tillage
tool set 3 to 4 inches deep. A second incorporation will
improve wild oat control. A1-3 M7
|
Eptam
(EPTC)
| 2.3 to 3.4 pt | (2 to 3 lb) Annual grasses
and some
broadleaf weeds.
| Eptam may cause some sugarbeet stand reduction
and temporary stunting. A1-3 M1-2 M5-6 S4
|
Eptam (EPTC) + | Ro-Neet (cycloate) 1.1 to 2.3 pt + | 2.7 to 3.3 pt (1 to 2 + 2 to 2.5 lb) Less sugarbeet injury than from Eptam alone. Refer to
narrative for suggested rates for various soil textures
and organic matter. A1-3 M1-2 M5-6 S4
|
Ro-Neet | (cycloate) 4 to 5.3 pt | (3 to 4 lb) Sugarbeet has better tolerance to Ro-Neet than to
Eptam. Weed control poor on fine textured, high
organic matter soils. A1-3 M1-2 M5-6 S4
|
Nortron | Etho Ethotron (ethofumesate) 6 to 7.5 pt | (3 to 3.75 lb) Good pigweed and
fair to good kochia
control.
| PPI or PRE.
| Incorporation generally improves weed control. | Band application reduces cost and risk of carryover into the next year. A1 M1-2 M9 S4 Y14 3 to 4 fl oz | (0.09 to 0.125 lb) Improves
broadleaf weed
control, including
kochia, pigweed,
lambsquarters.
| POST in
combination with
Progress, Betanex,
or Betamix.
| Crop rotation restrictions allow no more than 12 fl oz
total during the growing season. | Thus, POST Norton can be applied three times at 4 fl oz/A or four times at 3 fl oz/A. M1-2 M9 Y14 Clopyralid
| 0.25 to 0.66 pt | (0.09 to 0.25 lb) Cocklebur, sunflwr,
marshelder, wild
buckwheat and
Canada thistle.
| POST. | Sugarbeet: 2 to 8 leaves. Refer to narrative for rates and sizes for various
species. Clopyralid may be tank-mixed with Betanex or
Betamix. Refer to narrative for rotation restrictions.
Allow a 45 day PHI. M1-2 M8 M13 M18 S7 Y20 Y24
|
UpBeet | (triflusulfuron) 0.5 oz DF | (0.25 oz) Annual broadleaf
weeds.
| POST. Weeds:
Cotyledon to 2-leaf.
| Apply two or more times in combination with Betanex,
Betamix, or Progress. Do not exceed 2.5 oz/A/season. | Allow a 60 day PHI. M1-2 M8 M14 M18 Desmedipham &
Phenmedipham
| 0.75 to 7.5 pt | (0.06 to 0.6 & 0.06 to 0.6 lb) Annual broadleaf
weeds.
|
POST. | Sugarbeet: Cotyledon up to 8-leaf stage. Broadleaf weeds: Cotyledon up to 4-leaf stage. Risk of sugarbeet injury is increased by morning or
midday application and by certain environments. | Split application with reduced rates has reduced sugarbeet injury and increased weed control compared to single full-dose application. Refer to paragraph for rate adjustment information. Allow a 75 day PHI. M1-2 M4 M8 M11 M18 Desmedipham
| 0.75 to 7.5 pt | (0.12 to 1.2 lb) Desmedipham &
Phenmedipham &
Ethofumesate
| 0.56 to 5 pt | (0.04 to 0.38 & 0.04 to 0.38 & 0.04 to 0.38 lb)
See herbicide
brand options
listed with
individual
herbicides: | Desmedipham or Desmedipham & Phenmedipham or Desmedipham & Phenmedipham & Ethofumesate + Triflusulfuron + Clopyralid + MSO adjuvant MICRO-RATE
PROGRAM | 8 to 12 or 8 or 12 or 5.7 to 8.7 fl oz + 0.125 oz + 1.3 fl oz + 1.5% v/v (0.08 + 0.125 + 0.004 lb + 1.5% v/v) MID-RATE PROGRAM 12 to 16 or 12 to 16 or 8.7 to 11.6 fl oz + 0.125 oz + 1.3 fl oz + 1.5% v/v. (0.125 + 0.16 + 0.004 + 0.03 lb + 1.5% v/v) Annual broadleaf
weeds and fair to
good annual grass
control. | Generally provides poor control of ALS- resistant kochia. Increasing clopyralid rate from 1.3 to 2.6 fl oz will improve control of lanceleaf sage with some risk of increased sugarbeet injury. POST. | Sugarbeet: Apply a minimum of three times with subsequent treatments at 5 to 7 day intervals. Micro-rate can be applied starting at cotyledon sugarbeet stage. Mid-rate can be applied starting at 4-leaf sugarbeet stage. Use mid-rate for difficult weed problems or when
application has been delayed. | A herbicide for grass control at 1/3 to 1/2 normal rate can be added. Nozzle plugging from herbicide precipitation in the spray tank can be reduced by: - Mixing in warm water - Raising water pH to 8 or 9 - Premixing UpBeet - Use of a grass herbicide, and - Frequent sprayer cleaning. Allow a 75 day PHI. A5 M1-2 M4 M8-9 M11 M13-14 M18 |
SUGARBEET
|
Herbicide | Product/A
(ai/A) | Weeds |
When to Apply |
Remarks and Paragraphs
Assure II
| Targa (quizalofop) 8 to 10 fl oz | (0.88 to 1.1 oz) Annual grasses.
|
POST. | Sugarbeet: Refer to PHI. Annual grass weeds and vol. wheat or barley: 2 to 6 inches tall. Refer to soybean section on page 26. Apply with oil adjuvant at 1% v/v but not less than 1
pt/A. Oil adjuvant at more than 1 qt/A is not needed. | See Select Max label for detailed adjuvant recommendations. Apply with AMS or UAN fertilizer for greater control of certain grass species. Refer to soybean section for rates for different grass species. Allow a 45 day PHI for Assure II. Allow a 60 day PHI for Poast. Allow a 40 day PHI for Clethodim. A5-6 D4 M1-3 M10 M12
Poast | (sethoxydim) 0.5 to 1.5 pt | (0.1 to 0.3 lb) Clethodim
| 6 to 8 fl oz | (1.5 to 2 oz)
Select Max | (clethodim) 9 to 32 fl oz | (1.125 to 4 oz) Trifluralin
| 1.5 pt | (0.75 lb) Late emerging
annual grass and
some broadleaf
weeds.
| POST. | Sugarbeet: 2 to 6 inches tall and well-rooted prior to incorporation. Must be incorporated. Beet roots must be covered with
soil before application. Emerged weeds not controlled.
May be applied over the tops of sugarbeet. | A1 A3 M1-2 M15 Y18 Y24
Dual Magnum | (s-metolachlor) 1.33 to 1.67 pt | (1.25 to 1.6 lb) POST. | Sugarbeet: 4 or more true leaves. Emerged weeds not controlled. Rain or sprinkler
irrigation needed for activation. May be applied more
than once but total applied must not exceed 2.6 pt/A
for Dual Magnum or 21 fl oz/A for Outlook. | Lay-by Dual Magnum or Outlook/Propel should not be applied where PPI or PRE ethofumesate was used because sugarbeet injury may be severe. Allow a 60 day PHI except the PHI is 95 days for Outlook/Propel applied to 9-leaf through 12-leaf sugarbeet. C15 M16 M17
Outlook | Propel (dimethenamid) 18 to 21 fl oz | (0.84 to 0.98 lb) POST. | Sugarbeet: 4 to 12 true leaves. |
ROUNDUP READY SUGARBEET
|
Herbicide | Product/A
(ai/A) | Weeds |
When to Apply |
Remarks and Paragraphs | Glyphosate
| Maximum single
application up to
8-leaf stage = | 1.125 lb ae Maximum single application from 8-leaf sugarbeet to canopy closed = 0.75 lb ae See Remarks.
Annual and
perennial
grass and
broadleaf
weeds.
| EPP, PRE, or
POST.
Allow a 30 day
PHI.
| Apply only to Roundup Ready sugarbeet varieties. | Only use registered glyphosate brands lb ae/gal lb ai/gal 0.75 ae 1.125 ae 1.55 ae 1.97 ae 3.38 ae 3.71 ae 3 4 = 32 fl oz 48 fl oz 64 fl oz 84 fl oz 4.5 qt 5 qt 4/4.17 5.4 = 24 fl oz 36 fl oz 48 fl oz 64 fl oz 3.38 qt 3.7 qt 4.5 5.5 = 22 fl oz 32 fl oz 44 fl oz 56 fl oz 3 qt 3.3 qt 5 6.1 = 20 fl oz 30 fl oz 40 fl oz 50 fl oz 2.7 qt 3 qt Max. single app. from sugarbeet emergence to 8 leaves = 1.125 lb ae. Maximum from sugarbeet emergence to 8 leaves = 1.97 lb ae. Max. single application from 8 leaves to closed canopy = 0.75 lb ae. Maximum from 8 leaves to closed canopy = 1.55 lb ae. Maximum from sugarbeet emergence through harvest = 3.38 lb ae. Maximum preplant/preemergence per season = 3.71 lb ae. Maximum total for year = 6 lb ae. Apply with AMS fertilizer. Refer to label for tank-mix options, application information, and restrictions. A4-7 M19 X1 | ||||
POTATO
|
Herbicide | Product/A
(ai/A) | Weeds |
When to Apply |
Remarks and Paragraphs
Glyphosate
| 0.38 to 1.5 lb ae
| See Remarks.
Emerged grass and broadleaf weeds. |
Preplant or anytime prior to crop emergence.
| lb ae/gal lb ai/gal 0.38 ae 0.75 ae 1.125 ae 1.5ae | 3 4 = 16 fl oz 32 fl oz 48 fl oz 64 fl oz 4/4.17 5.4 = 12 fl oz 24 fl oz 36 fl oz 48 fl oz 4.5 5.5 = 11 fl oz 22 fl oz 32 fl oz 44 fl oz 5 6.1 = 10 fl oz 20 fl oz 30 fl oz 40 fl oz Non-selective, non-residual, translocated, foliar herbicide. Apply with AMS fertilizer. Refer to label for adjuvant use. A4-6 X1 Paraquat | RUP 1.5 to 2 pt 2SL | 1 to 1.3 pt 3SL (0.275 to 0.5 lb) Non-residual, contact, herbicides; thorough coverage
required. Apply with NIS at 0.25% v/v to small weeds. | B4 S1 S3-4 Q3 X1 Aim | (carfentrazone) 1/2 to 1 fl oz EW | (0.128 to 0.256 oz) Small broadleaf
weeds.
| Eptam | (EPTC) 3.5 to 9 pt EC | 15 to 30 lb 20G (3 to 6 lb) Grass and some
broadleaf weeds.
| PPI, Dragoff, or
Directed spray at
layby.
| Incorporate immediately after application with tool set
4 to 6 inches deep. Weak on wild mustard. | Refer to label for rates depending on use. Allow a 45 day PHI. May be applied with metribuzin at 0.33 to 0.67 lb/A. A1-3 N1 5.25 to 7 pt EC | 22.5 to 30 lb 20G (4.5 to 6 lb) Fall: Incorporate | after October 15 until freeze-up. Trifluralin
| 1 to 2 pt EC | 0.8 to 1.7 lb 60DF (0.5 to 1 lb) PoPI.
| Adjust rates according to soil type. No wild mustard
and poor wild oat control. Incorporate above the seed
piece after planting or immediately following drag-off
or hilling but before potato and weed emergence.
| Prowl | Prowl H2O (pendimethalin) 1.75 to 3.6 pt3.3EC | 1.57 to 3 lb 3.8ACS (0.72 to 1.5 lb) PRE or EPOST.
Potato: Before 6
inches tall.
| Incorporation improves consistency of weed control.
| Outlook | Propel (dimethenamid) 16 to 21 fl oz | (0.75 to 1 lb) PPI or PRE.
| Only one application allowed. Allow a 40 day PHI. | Metolachlor
| s-Metolachlor 1 to 2 pt | (1 to 2 lb) PPI or PRE.
| s-Metolachlor may give greater weed control than
metolachlor at equal product rates. Allow a 40 day
PHI. A1 C11 N1 S7 X1 Y1 Y18 Y24
| Linuron |
1.5 to 4 lb DF | 1.5 to 4 pt L (0.75 to 2 lb) Annual grass and
broadleaf weeds.
| PRE to potato. | Small grass and broadleaf weeds. Seed piece must be planted at least 2 inches deep.
Apply after drag-off or hilling. | The higher rates are for fine-textured soils. Apply with surfactant to emerged weeds. A2 N1 Metribuzin
| 0.33 to 1.33 lb DF | (0.25 to 1 lb) Annual broadleaf
weeds and grass
suppression. | PRE to potato.
| Apply after planting and before potato emergence or
after drag-off. Do not incorporate. Adjust rate
according to soil type. Residue may injure susceptible
crops the following year.
N1-4 Y1 Y4 Y17 Y24
| 0.33 to 0.67 lb DF | (0.25 to 0.5 lb) POST. | Weeds: Up to 1 inch tall. Only for russet type or white skinned varieties that
are not early maturing. | Do not use on early maturing, smooth skinned white or red-skinned varieties or Atlantic, Shepody, Chipbelle, Bellchip, or Centennial varieties. Use low rate for pigweed or lambsquarters control. Allow a 60 day PHI. Soil residue may injure crops the following year. N1-3 Y17 Y24 Chateau | (flumioxazin) 1.5 oz | (0.77 oz) Annual broadleaf
suppression.
| PRE to potato.
| Apply after planting and before potato emergence.
There must be a minimum of 2 inches of soil over the
vegetative portion of the potato. Refer to label for use
instructions. | D16 S3-4 |
POTATO
|
Herbicide | Product/A
(ai/A) | Weeds |
When to Apply |
Remarks and Paragraphs Matrix
| (rimsulfuron) 1 to 1.5 oz DF | (0.25 to 0.375 oz) Annual grass and
broadleaf weeds
and quackgrass. | Suppression of common lambsquarters. PRE to potato and
weeds. After hilling
or drag-off but
before potato
emerge.
| Requires 1 inch water after application for activation. | May be applied with Dual, Eptam, Prowl, and Sencor. Can be applied in two sequential treatments of 1 oz/A PRE followed by 1 oz/A POST. POST. | Potato: Up to 14 inches tall. Annual weeds: Small. Apply to annual weeds less than 1 inch tall. | Apply with NIS at 0.25% v/v or oil adjuvant at 1% v/v. Refer to label for application information and restrictions. N1-3 X1 Y3 Y24 Matrix | (rimsulfuron) + Metribuzin 1 to 1.5 oz DF + | 0.33 to 0.75 lb DF (0.25 to 0.375 oz + 0.25 to 0.56 lb) Annual grass and
broadleaf weeds
including common
lambsquarters,
ALS-resistant
kochia, wild
buckwheat and
suppression of
quackgrass. | PRE to potato and
weeds.
After hilling or
drag-off but before
potato emerge.
| Follow varietal restrictions on Sencor label. | Injury may occur when Sencor is applied POST to early maturing smooth-skinned white and all red-skinned potato varieties - use only the low rate of Sencor and consider benefits of weed control vs risk of potato injury prior to application to "at risk" varieties. Allow a 60 day PHI. Use the low rate of Sencor when applied PRE to coarse textured soil. Soil residual may injure susceptible crops the following year. N1-3 Y1 Y3-4 Y17 Y24 1 to 1.5 oz DF + | 0.25 to 0.67 lb DF (0.25 to 0.375 oz + 0.188 to 0.5 lb) POST. | Potato: Up to 14 inches tall. Annual weeds: Small. Poast | (sethoxydim) 0.5 to 1.5 pt | (0.1 to 0.3 lb) Annual grasses.
| POST. | Potato: Refer to PHI. Grass weeds: Refer to soybean section. Apply with oil adjuvant at 1% v/v but not less than 1
pt/A. Oil adjuvant at more than 1 qt/A is not needed. | See Select Max label for detailed adjuvant recommendations. May be tank-mixed with Sencor. Allow a 30 day PHI. D3 N1 X1 Clethodim
| 6 to 16 fl oz | (1.5 to 4 oz) Annual grasses
and quackgrass.
| Select Max | (clethodim) 9 to 32 fl oz | (1.125 to 4 oz) |
POTATO VINE DESICCATION
|
Herbicide | Product/A
(ai/A) | Weeds |
When to Apply |
Remarks and Paragraphs Desicate II
| (endothall) 2 to 4 pt | (0.5 to 1 lb) Desiccant. | Allow a 10 day
PHI.
| Apply with AMS at 5 lb/A. Requires spray solution pH
above 7. Use higher rate during cool, cloudy weather
and on dense vine growth. May require two
applications. Allow a 10 day PHI.
| Reglone | (diquat) 1 to 2 pt | (0.25 to 0.5 lb) Allow a 7 day PHI. | Apply with a NIS. Diquat at 2 pt/A can be applied to all
potatoes varieties and seed potato. Sequential
application may be made up to a total of 3 pt/A. Allow
at least 5 days between applications. | Paraquat use is for fresh market potatoes ONLY. Do not use paraquat on potatoes that will be stored or used as seed pieces. Firestorm | (paraquat) RUP 0.7 to 1.35 pt 3SL | (0.25 to 0.5 lb) Allow a 3 day PHI.
| Rely | (glufosinate) 48 fl oz | (0.375 lb) Allow a 9 day PHI.
| Do not apply to potato grown for seed pieces. | Best results when applied at the beginning of natural potato vine senescence. Requires thorough coverage. Apply in 20 to 100 gpa by ground and 5 to 10 by air. Use higher spray volumes on dense potato vines. Do not apply during extended cold, cloudy weather. Aim | (carfentrazone) 3.2 to 5.9 fl oz EW | (0.8 to 1.6 oz) Allow a 7 day PHI.
| Apply with MSO at 1 qt/A. Use sequential applications
and higher spray volumes on dense potato vines. | Thorough coverage essential. B4 S1 S3-4 X1 Sulfuric acid RUP
| 20 gal
| Allow a 5 day PHI.
| Extremely corrosive. | |
LEGUME FORAGES
Alfalfa or Trefoil Establishment, No Companion Crop
|
Herbicide | Product/A
(ai/A) | Weeds |
When to Apply |
Remarks and Paragraph Glyphosate
| 0.38 to 1.5 lb ae
| See Remarks. Emerged grass
and broadleaf
weeds.
| Preplant or
anytime prior to
crop emergence. | lb ae/gal lb ai/gal 0.38 ae 0.75 ae 1.125 ae 1.5ae
| 3 4 = 16 fl oz 32 fl oz 48 fl oz 64 fl oz 4/4.17 5.4 = 12 fl oz 24 fl oz 36 fl oz 48 fl oz 4.5 5.5 = 11 fl oz 22 fl oz 32 fl oz 44 fl oz 5 6.1 = 10 fl oz 20 fl oz 30 fl oz 40 fl oz Apply with AMS fertilizer. Refer to label for adjuvant use. A4-5 X1 Paraquat | RUP 2 to 4 pt 2SL | 1.3 to 2.7 pt 3SL (0.5 to 1 lb) Non-residual, contact, translocated herbicides;
thorough coverage required. | Apply with NIS at 0.25% v/v to small weeds. B4 S1 S3-4 Q3 X1 Aim | (carfentrazone) 1/2 to 1 fl oz EW | (0.128 to 0.256 oz) Small broadleaf
weeds.
| Eptam | (EPTC) 2 to 4.5 pt EC | 10 to 20 lb 20G (1.75 to 4 lb) Grass and some
broadleaf weeds.
| PPI.
| Poor wild mustard control. Incorporate immediately
after application. The 2 pt/A rate can be used on all
varieties. A1
| Treflan | (trifluralin) 1 to 1.5 pt | (0.5 to 0.75 lb) Alfalfa stand reduction/stunting may occur but reduced
weed competition will help alfalfa establishment.
| 2,4-DB ester | 2,4-DB amine 2 to 4 pt 2EC/SL | (0.5 to 1 lb) Small broadleaf
weeds.
| Alfalfa: More than
2 trifoliate leaves. | Weeds: <3 inches. Sweetclover may be killed by 2,4-DB. | Poor wild mustard control. No absinth wormwood control. Allow a 60 day PHI or grazing interval. Bromoxynil | For Alfalfa Only 1 to 1.5 pt | (0.25 to 0.38 lb) Refer to Remarks.
| Sweetclover may be killed. Refer to "Legume Forages
- with companion crop" for comments. P2
| Pursuit | (imazethapyr) For Alfalfa Only 3 to 4 fl oz | (0.75 to 1 oz) Annual broadleaf
and grass weeds.
| POST. | Alfalfa: At least 2 trifoliates. Weeds: 1- to 3-inches tall. Excellent alfalfa safety. | Apply with oil additive at 1.5 to 2 pt/A alone or with UAN at 1 to 2 qt/A. No absinth wormwood control. Can be tank-mixed with bromoxynil or Poast. A7 P3 Y2 Y25 Raptor (imazamox) | For Alfalfa Only 4 to 6 fl oz | (0.5 to 0.75 oz) Poast | (sethoxydim) 0.5 to 1.5 pt | (0.19 to 0.28 lb) Annual grasses.
| POST. | Alfalfa: Allow a 15 days PHI. Grass weeds: Refer to soybean section on page 26. May be applied to alfalfa and sainfoin. Apply with oil
adjuvant at 1% v/v but not less than 1 pt/A.
| Clethodim
| 6 to 16 fl oz | (1.5 to 4 oz) Annual grasses
and quackgrass.
| Oil adjuvant at more than 1 qt/A is not needed. | See Select Max label for detailed adjuvant recommendations. D3 X1 Select Max | (clethodim) 9 to 32 fl oz | (1.125 to 4 oz) |
LEGUME FORAGES
Established Alfalfa
Herbicide
Product/A
(lb ai/A)
Weeds
When to Apply
Remarks and Paragraph
Paraquat
RUP
2 to 3 pt 2SL
1.3 to 2 pt 3SL
(0.5 to 0.75 lb)
Small annual
weeds and early
germinating
weeds.
Alfalfa: Before
spring regrowth is
2 inches tall.
Apply to well established stands, at least 1 year old,
after dormancy but before spring regrowth reaches 2
inches. Allow a 60 day PHI or grazing interval.
A4 Q3
1 pt 2SL
0.7 pt 3SL
(0.25 lb)
Larger weeds.
Between cuttings -
includes first-year
alfalfa.
Apply up to 5 days after cutting. Allow a 30 day PHI.
May be applied to dormant alfalfa.
A4 Q3
Trifluralin
1.5 to 2 pt
(0.75 to 1 lb)
Annual grasses.
Weeds: Prior to
emergence.
Apply when crop is dormant, or in fall after a cutting.
Incorporate by irrigation or mechanical equipment.
X1
20 lb 10G (2 lb)
2,4-DB ester
2,4-DB amine
2 to 4 pt 2EC/SL
(0.5 to 1.0 lb)
Broadleaf weeds.
Weeds: Less than
3 inches tall.
Sweet clover may be killed by 2,4-DB.
No wild mustard or absinth wormwood control.
Allow a 30 day hay, harvest or grazing interval.
Pursuit
(imazethapyr)
For Alfalfa Only
3 to 4 fl oz
(0.75 to 1 oz)
Annual broadleaf
and grass weeds.
POST.
Alfalfa: At least 2
trifoliates.
Weeds: 1- to 3-inches tall.
Excellent alfalfa safety.
Apply with oil additive at 1.5 to 2 pt/A alone or with
UAN at 1 to 2 qt/A. No absinth wormwood control.
Can be tank-mixed with bromoxynil or Poast.
A7 P3 Y2 Y25
Raptor
(imazamox)
For Alfalfa Only
4 to 6 fl oz
(0.5 to 0.75 oz)
Poast
(sethoxydim)
0.5 to 1.5 pt
(0.2 to 0.3 lb)
Annual grasses.
Grass.
Alfalfa: Allow a 15
day PHI.
Grass weeds:
Refer to soybean
section on page
26.
Oil adjuvant at more than 1 qt/A is not needed.
See Select Max label for detailed adjuvant
recommendations.
Apply in two sequential applications for quackgrass
control.
D3 X1
Clethodim
6 to 16 fl oz
(1.5 to 4 oz)
Annual grasses
and quackgrass.
Select Max
(clethodim)
9 to 32 fl oz
(1.125 to 4 oz)
Glyphosate
0.75 to 1.5 lb ae
See Remarks.
Alfalfa and
emerged grass
and broadleaf
weeds.
Apply in spring or
fall for quackgrass
control.
lb ae/gal lb ai/gal 0.38 ae 0.75 ae 1.125 ae 1.5ae
3 4 = 16 fl oz 32 fl oz 48 fl oz 64 fl oz
4/4.17 5.4 = 12 fl oz 24 fl oz 36 fl oz 48 fl oz
4.5 5.5 = 11 fl oz 22 fl oz 32 fl oz 44 fl oz
5 6.1 = 10 fl oz 20 fl oz 30 fl oz 40 fl oz
Apply where crop destruction is acceptable. Treated
crop and weeds can be harvested and fed 36 hours or
longer after treatment. Apply with AMS fertilizer.
Refer to label for adjuvant use. A4-6 X1
HERBICIDE RESISTANT ALFALFA
Continue to next page
ROUNDUP READY ALFALFA - Estblished
Herbicide
Product/A
(ae/A)
Weeds
When to Apply
Remarks and Paragraph
Glyphosate
Up to 1.5 lb ae
See Remarks.
Emerged annual
and perennial
grass and
broadleaf weeds.
RR Alfalfa:
Emergence to 5
days prior to any
cutting (PHI).
Apply as a single
application or
multiple
applications at
least 7 days apart.
Apply only to glyphosate resistant alfalfa.
Apply with AMS fertilizer. Multiple applications may be
necessary to control weed flushes.
Drift and off-site
movement may cause injury or death to other plants
and crops.
Refer to label for weeds controlled,
application information, adjuvant use, tank-mix options
with residual herbicides, and restrictions.
A4-7 P4 S4 X1
W-253, January 2008
