Herbicide |
Crop |
Rate/A |
Comments |
Glyphosate
(various)
|
- Pre harvest applications can provide a good opportunity to control perennials.
|
|
Corn |
Up to 1.12 lbs ae (ground)
up to 0.75 ob ae (aerial) |
- Apply at 35% moisture or less, when corn is at black layer with maximum kernel fill is complete
- Apply at least 7 days before harvest
- Several labels recommend against apply to seed corn.
|
Grain Sorghum |
0.75 to 1.5 lb ae |
- Apply at 30% moisture or less.
- Apply 7 days before harvest, but a 14 day period is recommended before harvest.
- Do not apply to grain sorghum grown for seed.
|
Soybean |
4.5 lb ae (ground)
0.75 lb ae (aerial) |
- Apply after pods have set and lost all green color, and at least 7 to 14 days before harvest.
- Do not graze or harvest for feed (Roundup brand labels allow use of soybean for livestock feed when harvest is at least 25 days after application).
- Do not use for soybeans grown for seed.
|
Wheat |
0.38 to 0.6 lb ae |
- Apply when wheat is in the hard dough stage.
- Do not apply to wheat grown for seed.
- Stubble can be grazed after harvest.
|
Clarity |
Wheat |
8 oz |
- Apply when the wheat is in the hard dough stage and no longer green.
- Wait 10 to 14 days before harvest.
- Do not graze or use for feed.
- Do not plant soybean for 14 days after application.
|
Gramoxone Max |
- Mature cocklebur and labsquarter are tolerant to Gramoxone Max and may not dry completely.
- Add nonionic surfactant at 0.25% v/v or crop oil concentrate at 1% v/v.
|
|
Corn |
1.3 pt |
- Used for drying weeds in field, seed, and popcorn.
- Apply after black layer.
- Apply at least 7 day sbefore harvest.
|
Soybean |
10.7 oz |
- Indeterminate - apply when 65% of the seed pods have reached a mature brown or when seed moisture is 30% or less.
- Determinate - apply when at least 50% of the leaves have dropped and the rest of the leaves are turning yellow. For aerial applications, use a spray volume of 5 GPA, for ground use 20 GPA
|
Reglone |
Grain sorghum |
1.5 to 2 pt. |
- Apply at 30% moisture or less.
- Apply 1 to 2 weeks before harvest.
- Do not use seed from treated plants for food, feed, or oil.
|
Sodium chlorate |
Grain sorghum |
4 to 6 lb |
- Apply 7 to 10 days before harvest.
- Use adjuvant as recommended by label.
- Can be applied with 28% UAN to increase foliar activity.
- Do not graze treated fields or feed treated fodder, forage, or seed within 14 days of application.
|
2,4-D amine or ester
(4 lb ai/gal) |
- If the 1 pt/A rate is used do not plant soybean for 7 days (ester) and 15 days (amine). If great than 2 pt is used, do not plant soybean for 30 days.
- See specific label for details about rate, adjuvant, and rain fast intervals.
|
|
Corn |
1 to 2 pts/A |
- Apply after silks are competely brown (denting stage).
- Do not feed or use for frage for 7 days after application.
|
Wheat |
1 to 2 pts/A |
- Apply when wheat is in the hard dough, 30% or less moisture.
- Do not graze for 2 weeks after application and do not use treated straw for feed.
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