Section 4 Table of Contents

Table 2.4-16. Spray additives and rainfastness for "burndown" or postemergence soybean herbicides.

Herbicide Adjuvant(s)1 Rate Rainfastness
(hr)
  1. In general, nonionic surfactants should contain at least 80% surface active agent; crop or vegetable oil concentrates should be nonphytotoxic containing at least 15% approved emulsifier; nitrogen solution is ammonium-based fertilizer such as 28%, 30%, or 32% N; and ammonium sulfate should be spray-grade dry ammonium sulfate (21-0-0). You also may use 10-34-0 with some products.
  2. Adjuvants for use with Cobra depend on relative humidity and weed species.
  3. Use crop oil concentrate under drought-stressed conditions.
  4. For Poast Plus + Storm tank-mixtures, include 1 gal/100 gal of crop oil concentrate.
Assure II nonionic surfactant
or crop oil concentrate
1 qt/100 gal
4 qt/100 gal
1
Backdraft nonionic surfactant
or organo-silicone
1 pt/100 gal
1 pt/100 gal
1
Basagran crop or vegetable oil concentrate
or nitrogen solution
or ammonium sulfate (for velvetleaf)
5 pt/100 gal (2pt/A max)
2-4 qt/A
2.5lb/A
8
Blazer/Ultra Blazer nonionic surfactant
or crop oil concentrate
or ammonium sulfate
or nitrogen solution (for velvetleaf)
1-2 pt/100 gal
1-2 pt/100 gal
2.5 lb/A
2-4 qt/A
6
Classic nonionic surfactant
or crop oil concentrate
plus nitrogen solution
or ammonium sulfate (for velvetleaf)
1 qt/100 gal
1 gal/100 gal
2-4 pt/A
2-4 lb/A
1
Cobra2 nonionic surfactant
or crop oil concentrate
plus/or nitrogen solution
or ammonium sulfate
1 qt/100 gal
1-2 pt/100 gal
4 qt/A
2.5 lb/A
0.5
Extreme nonionic surfactant
plus ammonium sulfate
1 pt/100 gal
2.5 lb/A
1
FirstRate / Amplify nonionic surfactant
plus nitrogen solution
or ammonium sulfate
or crop oil concentrate
plus nitrogen solution (optional)
1-2 pt/100 gal
2.5 gal/100 gal
2 lb/A
1.2 gal/100 gal
2.5 gal/100 gal
2
Flexstar nonionic surfactant
or crop oil concentrate
plus nitrogen solution
or ammonium sulfate
1-2 qt/100 gal
2-4 qt/100 gal
1 gal/100 gal (minimum)
4 lb/100 gal (minimum)
1
Fusilade nonionic surfactant
or crop oil concentrate
plus nitrogen solution
or 10-34-0 (optional)
1-2 qt/100 gal
2-4 qt/100 gal
1 gal/A
2 pt/A
1
Fusion nonionic surfactant
or crop oil concentrate
plus nitrogen solution (optional)
1-2 qt/100 gal
2-4 qt/100 gal
4 gal/100 gal
1
Glyphomax XRT no NIS/COC recommended
ammonium sulfate (optional)

8.5-17 lb/A
1
Glyphosate nonionic surfactant
plus ammonium sulfate (optional)
2 qt/100 gal
8.5-17 lb/100 gal
1-6
Gramoxone Max nonionic surfactant
or crop oil concentrate
1 pt/100 gal
1 gal/100 gal
0.5
Harmony GT3 nonionic surfactant
or crop oil concentrate
plus nitrogen solution
or ammonium sulfate (for velvetleaf)
1-2 pt/100 gal
2 qt/100 gal
4 gal/100 gal
2-4 lb/A
1
Liberty ammonium sulfate 3 lb/A 4
Poast Plus4 / Poast crop or vegetable oil concentrate
or Dash HC
plus nitrogen solution
or ammonium sulfate (certain species)
2 pt/A
1 pt/A
2-4 qt/A
2.5 lb/A
1
Pursuit nonionic surfactant
or crop oil concentrate
or crop oil concentrate
plus nitrogen solution
or ammonium sulfate
1 qt/100 gal
2 pt/A
1.5-2 pt/A
1-2 qt/A
2.5 lb/A
1
Raptor crop oil concentrate
or vegetable seed oil
or nonionic surfactant
plus nitrogen solution
or ammonium sulfate
2 pt/A
1.5-2 pt/A
1 qt/100 gal
1-2 qt/A
2.5 lb/A
1
Reflex nonionic surfactant
or crop oil concentrate
plus nitrogen solution (optional)
1-2 qt/100 gal
2-4 qt/100 gal
4 qt/A
1
Resource crop oil concentrate
plus nitrogen solution (optional)
2-4 qt/100 gal
2.4 qt/A
1
Roundup WeatherMax no NIS/COC required
ammonium sulfate (optional)

8.5-17 lb/100 gal
<1
Scepter nonionic surfactant
or crop oil concentrate
1 qt/100gal
1 gal/100 gal
1
Select crop oil concentrate
plus nitrogen solution (optional)
2-4 qt/100 gal
1-2 qt/A
1
Stellar crop oil concentrate
or methylated seed oil
plus nitrogen solution
or ammonium sulfate (optional)
2-4 qt/100 gal
2-4 qt/A
2 qt/100 gal
2.5 lb/A
1
Storm4 nonionic surfactant
or crop oil concentrate
or nitrogen solution
or ammonium sulfate
(for velvetleaf or pigweed)
1-2 pt/100 gal
1-2 pt/A
2 qt/A
2 lb/A
8
Synchrony STS/XP crop oil concentrate
plus nitrogen solution
or 10-34-0
or ammonium sulfate (for velvetleaf)
1 gal/100 gal
2-4 qt/A
1-2 qt
2-4 lb/A
1
Touchdown Total no NIS/COC required
plus ammonium sulfate (optional)
--
8.5-17 lb/100ga
1-6
Touchdown HiTech nonionic surfactant
plus ammonium sulfate (optional)
1 qt/100 gal
8.5-17 lb/100gal
1-6