Grazing and Feeding Restrictions
PDF version
DS-23-97, Reviewed May 2008
Richard Zollinger, Weed Specialist
Hot, dry conditions may lead to a shortage of grass and hay for livestock. Small grain crops are an alternative source of feed for livestock when other feed sources are limited, but previous herbicide usage may influence using small grain crops as livestock feed.
Most herbicides have grazing and feeding restrictions stated on the label that limit the use of the crop for livestock feed. However, the labels are often vague regarding specific information on use of grain crops as forage for livestock, since this is not the normal use.
Grazing and harvesting a crop for feed following herbicide use often is prohibited because research on residue levels in the crop is inadequate. The effect of the chemical or its breakdown products on livestock or retention in the animal's body may not be known. Livestock which consume crops treated with such herbicides probably would not become ill from the chemicals, but could retain the chemicals in their systems. The concern is that herbicides could be passed in the milk of lactating animals or cause abortion in pregnant animals. The chemical may also have potential to be retained by the animals and be present in the slaughtered carcass. Although these problems are not likely to occur, labeling restrictions are strict and should be adhered to. The presence of foreign chemicals in milk or meat of animals can result in confiscation and destruction of the products and loss of income from these animals.
The following table presents some of the grazing and feeding restrictions for herbicides commonly used on small grain crops. The herbicide label is always the final authority on herbicide uses and precautions. Information on the toxic effects of herbicides on animals is not readily available.
Z1. Restrictions on Grazing/Feeding/Haying of Crops Treated with Herbicides
|
Herbicide |
Crop |
Time interval |
|
DAA = days after application WAA = Weeks after appl. |
|
Accent |
Corn |
30 DAA |
|
Acetochlor |
Corn |
No restriction |
|
Achieve |
Small grain |
30 DAA |
|
Aim |
Corn, small grain |
No restriction |
|
Amber |
CRP, small grain |
No restriction |
|
Assert |
Sunflower, small grain |
Not allowed |
|
Assure II |
Canola/mustards, chickpea, dry bean, dry pea, lentil, soybean, sugarbeet |
Not allowed |
|
Atrazine |
Corn |
21 DAA |
|
Authority Assist |
Soybean |
Not allowed |
|
Authority First |
Soybean |
Not allowed |
|
Authority MTZ |
Soybean |
Not allowed |
|
Axial XL |
Barley
Wheat |
Not allowed
50 DAA |
|
Balance Pro |
Corn |
No restriction |
|
Basagran |
Corn
Dry edible bean, dry pea
Soybean |
12 DAA
No restriction
30 DAA |
|
Basis |
Corn |
30 DAA |
|
Beyond |
Clearfield canola, CF wheat
Clearfield sunflower |
No restriction
Not allowed |
|
Bromoxynil |
Alfalfa
Corn, small grain
CRP, Grass establishment
Flax |
30 DAA
45 DAA
Not allowed
No restriction |
|
Bromox&MCPA |
Small grain |
45 DAA |
|
Callisto |
Corn |
45 DAA |
|
Camix |
Corn |
45 DAA |
|
Celebrity Plus |
Corn |
32 DAA |
|
Chlorsulfuron |
Small grain |
No restriction |
|
Chlor&Metslfrn |
Small grain |
No restriction |
|
ClearMax |
Clearfield wheat |
7 DAA |
|
Clethodim |
Alfalfa
Canola, chickpea, dry bean, flax, potato, soybean, sunflower, sugarbeet |
15 DAA
Not allowed |
|
Clopyralid |
Canola/mustards, sugarbeet |
7 DAA |
|
Clopyralid& 2,4-D/MCPA |
CRP, small grain - graze/feed
- hay |
7 DAA
Not allowed |
|
Dicamba |
Corn
CRP - non-lactating animals
- lactating - see label
Small grain - non-lactating
- lactating - see label
- haying forage |
> milk stage
No restriction
< 70 DAA
No restriction
7 DAA
37 DAA |
|
Discover |
Small grain |
30 DAA |
|
Distinct |
Corn |
32 DAA |
|
Eptam |
Alfalfa, sunflower |
No restriction |
|
Everest |
Small grain |
60 DAA |
|
Extreme |
RUR soybean |
Not allowed |
|
Far-Go |
Chickpea, small grain
Field pea
Lentil |
Not allowed
120 DAA
No restriction |
|
Finesse |
Small grain |
No restriction |
|
FirstRate |
Soybean |
14 DAA |
|
Flexstar |
Soybean |
Not allowed |
|
Fusilade DX |
Soybean |
Not allowed |
|
Fusion |
Soybean |
Not allowed |
|
Gangster |
Soybean |
Not allowed |
|
Glyphosate labels indicate that for all registered crops and applications unless otherwise noted there is an 8 week after application (WAA) restriction for grazing, feeding and haying. |
|
Glyphosate |
Alfalfa - Preharvest
Spot - Monsanto
- Generics
Renovate - < 1.5 lb ae/A
- > 1.5 lb ae/A
Renovation - Generics
Alfalfa - Roundup Ready
Barley - Preharvest
Postharvest - Monsanto
- Generics
Canola
Canola - RR
Chickpea - Preharvest
Corn - Preharvest
Postharvest - Monsanto
- Generics
Corn RUR - Preharvest
Postharvest
Dry bean - Preharvest
Dry pea - Preharvest
Flax
Lentil
Potato - Preharvest
Soybean - Preharvest
Monsanto - < 22 fl oz/A
- > 22 fl oz/A
Generics - < 6 qt/A
Postharvest
Soybean - RR - Preharvest
Monsanto -
Generics -
Postharvest
Sugarbeet
Sunflower
Wheat - preharvest
Postharvest - Monsanto
- Generics |
1.5 DAA
3 DAA
14 DAA
3 DAA
Not allowed
8 WAA
5 DAA
After harvest
7 DAA
8 WAA
Not allowed
8 WAA
8 WAA
8 WAA
7 DAA
8 WAA
7 DAA
7 DAA
Not allowed
8 WAA
8 WAA
8 WAA
8 WAA
14 DAA
25 DAA
25 DAA
8 WAA
14 DAA
Not allowed
8 WAA
8 WAA
Not allowed
After harvest
7 DAA
8 WAA |
|
Halex GT |
Corn |
45 DAA |
|
Hornet |
Corn |
No restriction |
|
Huskie |
Wheat, barley |
25 DAA |
|
Impact |
Corn |
45 DAA |
|
Laudis |
Corn |
45 DAA |
|
Liberty |
Liberty Link canola or corn |
Not allowed |
|
Lightning |
Clearfield corn |
45 DAA |
|
Lumax |
Corn |
45 DAA |
|
Maverick |
Small grain - Feed, graze
- Hay |
No restriction
30 DAA |
|
MCPA |
CRP, small grain - hay
- graze dairy animal
- graze meat animal
Flax, grass establishment |
30 DAA
7 DAA
7 DAA
7 DAA |
|
Metolachlor |
Chickpea, soybean
Corn
Dry bean, field pea
Potato, safflower, sunflower |
No restriction
30 DAA
120 DAA
Not allowed |
|
Metribuzin |
Field pea, lentil, soybean |
40 DAA |
|
Metsulfuron |
CRP
Small grain |
No restriction
No restriction |
|
Met & Chlorsfrn |
Small grain |
Not allowed |
|
NorthStar |
Corn |
30 DAA |
|
Olympus |
Small grain |
No restriction |
|
Option |
Corn |
45 DAA |
|
Outlook |
Corn
Soybean |
45 DAA
Not allowed |
|
Paramount |
CRP
Small grain |
309 DAA
Not allowed |
|
Paraquat (PRE) |
Corn, dry bean, field pea
sunflower (desiccant),
small grain |
7 DAA |
|
Peak |
Small grain |
30 DAA |
|
Permit |
Corn |
30 DAA |
|
Plateau |
CRP
Grass establishment |
No restriction
Not allowed |
|
Poast |
Alfalfa
Canola, dry bean, dry pea, flax, lentil, flax, potato, sunflower sugarbeet
Soybean |
7 DAA
No restriction
Not allowed |
|
Prowl |
Wheat
Corn
Soybean
Chickpea, dry bean, dry pea, lentil, potato, sunflower |
28 DAA
21 DAA
No restriction
Not allowed |
|
Puma |
Small grain |
No restriction |
|
Pursuit |
Alfalfa
Chickpea, soybean
Dry edible bean
Field pea
Lentil |
30 DAA
Not allowed
7 DAA
120 DAA
No restriction |
|
Pursuit Plus |
Soybean |
Not allowed |
|
Python |
Corn
Soybean |
No restriction
Not allowed |
|
Rage D-Tech |
Corn and grass forage
Small grains |
7 DAA
14 DAA |
|
Raptor |
Alfalfa, dry bean, field pea, soybean |
No restriction |
|
Reflex |
Dry edible bean |
7 DAA |
|
Rezult |
Soybean
Dry bean, dry pea |
Not allowed
No restriction |
|
Rimfire |
Wheat |
30 DAA |
|
Rimsulfuron |
Corn
Potato |
30 DAA
Not allowed |
|
Sequence |
Pod crops
Soybean |
120 DAA
30 DAA |
|
Silverado |
Wheat/Durum - hay
forage
grain straw |
50 DAA
30 DAA
55 DAA |
|
Sonalan |
Canola/mustard, dry bean
soybean, sunflower
Field pea |
Not allowed
No restriction |
|
Sonic |
Soybean |
Not allowed |
|
Spartan |
Dry pea, chickpea, soybean
sunflower |
No restriction |
|
Starane |
Corn
Small grain - graze/feed
- hay |
47 DAA
7 DAA
14 DAA |
|
Starane NXT |
Small grain |
45 DAA |
|
Status |
Corn |
32 DAA |
|
Steadfast |
Corn |
30 DAA |
|
Thistrol |
Field pea |
Not allowed |
|
Thifensulfuron |
Soybean, small grain |
Not allowed |
|
Thifn&Tribenrn |
Small grain |
Not allowed |
|
Tribenuron |
Small grain |
Not allowed |
|
Trifluralin |
Canola/mustard, dry bean pea, lentil, potato, safflower, sunflower, sugarbeet
Chickpea, flax, soybean,
small grain |
Not allowed
No restriction |
|
Ultra Blazer |
Soybean |
Not allowed |
|
Valor |
Soybean |
Not allowed |
|
WideMatch |
Corn
Small grain - graze/forage
- hay |
47 DAA
7 DAA
14 DAA |
|
2,4-D |
CRP, grass - hay
- graze/feed dairy animal
- graze/feed meat animal
Small grain
- graze/feed/hay dairy animal
- graze/feed/hay meat animal |
30 DAA
7 DAA
3 DAA
14 DAA
No restriction |
|
2,4-DB |
Alfalfa
Soybean |
30 DAA
60 DAA |
Grazing and Haying Restrictions for Herbicides Used in Pasture and Rangeland
|
Herbicide1 |
Lactating dairy animals |
All animals except lactating dairy animals |
|
Before
grazing |
Before
hay harvest |
Before
grazing |
Before
hay harvest |
Removal before
slaughter |
|
|
days after application |
days after application |
|
Cimarron/Extra |
0 |
0 |
0 |
0 |
0 |
|
Cimarron Max/Extra |
7 |
- |
0 |
0 |
30 |
|
Amber |
0 |
30 |
0 |
30 |
0 |
|
Clopyralid |
0 |
0 |
0 |
0 |
0 |
|
Clopyralid + 2,4-D |
14 |
30 |
0 |
30 |
73 |
|
Crossbow |
1 year |
1 year |
02 |
1 year |
3 |
|
Dicamba1
Up to 1 pt
Up to 2 pt
Up to 4 pt
Up to 16 pt |
7
21
40
60 |
37
51
70
90 |
0
0
0
0 |
0
0
0
0 |
30
30
30
30 |
|
FallowMaster |
8 weeks |
8 weeks |
8 weeks |
8 weeks |
8 weeks |
|
Fuego |
7 |
30 |
0 |
30 |
30 |
|
Glyphosate1
Pre/Renovation - < 1.5 lb ae/A
- > 1.5 lb ae/A
Spot Spray - Monsanto6
- Generics
Broadcast |
No restriction
8 weeks
7
14
8 weeks |
No restriction
8 weeks
7
14
8 weeks |
No restriction
8 weeks
7
14
8 weeks |
No restriction
8 weeks
7
14
8 weeks |
No restriction
8 weeks
7
14
8 weeks |
|
Glyphosate + 2,4-D premix5 |
7 |
30 |
3 |
30 |
3 |
|
Grazone P + D |
7 |
30 |
7 |
30 |
3 |
|
Metsulfuron |
0 |
0 |
0 |
0 |
0 |
|
Milestone |
0 |
0 |
0 |
0 |
0 |
|
Paramount |
No grazing allowed. Do not hay for 309 days after application. |
|
Paraquat4 |
1 month |
1 month |
1 month |
1 month |
0 |
|
Plateau |
0 |
7 |
0 |
7 |
0 |
|
Rave |
7 |
0 |
0 |
0 |
0 |
|
Redeem |
1 year |
1 year |
0 |
1 year |
3 |
|
Spike7 |
0 |
1 year |
0 |
1 year |
0 |
|
Tordon 22K8 |
14 |
14 |
0 |
14 |
3 |
|
2,4-D/MCPA1 |
7 |
30 |
0 |
30 |
3 |
1 Check individual product labels containing the same active ingredients for restrictions and use rates.
2 One year if more than 1.5 gallons/A is used.
3 Withdrawal not needed if 2 weeks or more time elapsed since application.
4 Restrictions based on degree of new seedling establishment before grazing. Suggested at least 6 inches of grass or legume growth.
5 No restrictions if 10% or less of the area is treated.
6 Do not treat more than one-tenth of any given acre at one time with spot or wiper applications. Remove livestock before application.
7 If no more than 20 lb/A used.
8 Remove livestock to untreated grass pasture for 7 days before transferring livestock to broadleaf or pasture areas. Removal before slaughter statement only applies to animals grazing treated forage for 2 weeks immediately after application.
|
