Cover Crops and Conservation Tillage for Soil Erosion Control on Cropland

Table of Contents

See Pursuit and other product labels to determine activity on various weed species.

General Information:

• Pursuit can only be used on Pursuit tolerant (IT/Clearfield) corn varieties.
• Basis should be tank mixed with Pursuit to improve annual grass and common lambsquarters control.
• Permit may be tank mixed with Pursuit to improve common ragweed and yellow nutsedge control.
• Pursuit tank mixed with Lasso MT, Frontier, Surpass/Harness or Prowl are too hot on birdsfoot trefoil.
• Pursuit + Dual II, Lasso MT or Prowl is safe on crownvetch when seeded without birdsfoot trefoil.

Table 9-2. Preplant, pre-emergence or early post herbicides for establishing birdsfoot trefoil and crownvetch in conventional or min-tillage corn.

Herbicide	No.	Product/A	lb ai/A	Remarks	Weeds Controlled
Conventional or min-till
Pursuit ECO-PAK plus	1	0.72 oz plus	0.0315 plus	Read the label. Plant Pursuit-resistant corn varieties only. Works best on emerged weed seedlings 1 to 2 inches in height. Some stunting of emerged crownvetch or birdsfoot trefoil seedlings is expected.	Annual grasses and broadleaves,TR pigweed and lambsquarters; suppression of shattercane and yellow nutsedge.
Basis1 plus		0.125 oz plus	0.0058
nonionic surfactant plus		1 qt/100 gal plus	This is about a half rate of each
Nitrogen solution		2 gal/100 gal
Pursuit ECO-PAK (imazethapyr) If post, add:	2	1.44 oz	0.063	Read the label. Plant Pursuit- resistant corn varieties only. May be applied preplant, pre-, or postemergence to the corn but after most weeds have emerged. E. post treatments are safer on emerged crownvetch or birdsfoot trefoil seedlings.	Annual grasses and broadleaves; shattercane and yellow nutsedge suppression; weak on common ragweed and lambsquarters.
nonionic surfactant or		1 qt/100 gal or
crop oil plus		1 gal/100 gal plus
nitrogen solution		2 gal/100 gal
If yellow nutsedge is a problem, use the following treatment with Permit. Permit also can be applied as a post-cleanup treatment for yellow nutsedge. (Treatment 20)
Pursuit ECO-PAK plus	3	0.72 oz plus	0.0315 plus	Read the label. Plant Pursuit-resistant corn varieties only. Must be applied post to yellow nutsedge. Works best on emerged weed seedlings. Post treatments are safer on emerged crownvetch or birdsfoot trefoil seedlings.	Annual grasses and broadleaves, shattercane and yellow nutsedge;  plus common ragweed, TR pigweed, and lambsquarters.
Basis1 plus		0.125 oz plus	0.0058 plus
Permit plus		0.533 oz plus	0.025
nonionic surfactant plus		1 qt/100 gal plus
nitrogen solution		2 gal/100 gal
The following treatment should be used only when seeding crownvetch alone.
Pursuit ECO-PAK plus	4	1.44 oz plus	0.063 plus	Read the label. Plant at corn least 1.5 inches deep to avoid Prowl injury. Do not incorporate. Must be applied after planting. Delaying application until spike stage reduces the risk of injury from Prowl. Use only when seeding crownvetch alone.	Annual grasses, broadleaves, TR pigweed, and lambsquarters; weak on common ragweed.
Prowl 3.3E2 If post add:		1.8 to 3.6 pt if post add	0.75 to 1.5 Do not use Prowl on birdsfoot trefoil.
nonionic surfactant or		1 qt/100 gal or
crop oil plus		1 gal/100 gal plus
nitrogen solution		2 gal/100 gal
For no-till, apply Gramoxone Max, Roundup, or Touchdown before the corn or cover crop has emerged, and tank-mix with treatments 1, 2, 3, or 4 above.
Gramoxone Max 3S (paraquat) plus	5	1 to 2 pt plus	0.375 to 0.75 lb plus label rate	Read the label.. Use flat-fan nozzle with 20 to 30 psi pressure for best results. Weak on established biennial and perennial weeds.	Annual grasses and broadleaved weeds plus top kill of biennial and perennial weeds.
nonionic surfactant or		1 pt/100 gal
Roundup 4S (glyphosate) or	6	1 qt. or	1.0 lb or	Read the label. Use flat-fan nozzle. Annual weeds may be any size. Established weeds should have 6 to 8 inches of leafy growth. Apply at least four days before tillage or seeding in 5 to 10 gal water.	Above weeds plus top and root kill of most established biennial and perennial weeds.
Touchdown IQ (sulfosate) plus		1 qt plus	1.0 lb plus label rate
nonionic surfactant		1 qt/100 gal
Early postemergence herbicides for establishing birdsfoot trefoil and crownvetch in conventional, min-tillage or no-tillage corn.
Post Emergence Herbicides - Cleanup treatment for TR lambsquarters and grasses
Pursuit ECO-PAK plus	7	0.72 oz plus	0.0315 plus	Read the label.Plant Pursuit-resistant corn varieties only. Works best on emerged weed seedlings 1 to 2 inches in ht. Some stunting of emerged crownvetch or birdsfoot trefoil seedlings is expected.	Annual grasses and broadleaves, TR pigweed and lambsquarters; suppression of shattercane, and yellow nutsedge.
Basis1 plus		0.125 oz plus	0.0058 This is about a half rate of each.
nonionic surfactant plus		1 qt/100 gal plus
Nitrogen solution		2 gal/100 gal
Basis1 plus	8	0.125 oz plus	0.0058	Read the label.This is 4/10 of the label rate; higher rates kill birdsfoot trefoil. Apply when weeds are less than 1 to 2 inches tall and corn is from spike to 4-leaf stage.	Annual grasses and broadleaves including TR lambsquarters.
nonionic surfactant plus		1 qt/100 gal plus
Nitrogen solution		2 gal/100 gal
Post Emergence Herbicides - Cleanup treatment for some perennial grasses and thistle or dewberry.
Accent 75DF plus	9	0.67 oz plus	0.03125	Read the label. Applications should be made when shattercane or seedling or rhizome johnsongrass is 8 to 16 inches tall. Corn should be between 4 and 20 inches in height. Some corn varieties will be stunted for a few weeks. Do not use on non-IT corn that has been treated with the insecticide Counter.	Shattercane, seedling and rhizome johnsongrass, fall panicum, quackgrass, Canada thistle, and dewberry. Very weak on common ragweed.
nonionic surfactant or		1 qt/100 gal or
crop oil plus		1 gal/100 gal plus
Nitrogen solution. (May be used on IT-tolerant corn varieties even with the insecticide Counter)		4 gal/100 gal
1 Use Basis, not Basis Gold; they are different products. The atrazine in Basis Gold will kill the cover crop seedlings. 2 Pursuit Plus is a prepackaged mix of Pursuit and Prowl (0.2 + 2.7 ai/gal -- enough for 3.2 acres).