Section 4 Table of Contents

Table 2.4-14.

Table 2.4-14. Spray additives and rainfastness for “burndown” or postemergence soybean herbicides.
Herbicide Adjuvant(s)¹ Rate Rainfastness
(hours)
  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/Targa nonionic surfactant
or crop oil concentrate		 1 qt/100 gal
4 qt/100 gal		 1
Basagran crop or vegetable oil concentrate
or nitrogen solution
or ammonium sulfate (for velvetleaf)		 5 qt/100 gal (2 pt/A max.)
2–4 qt/A
2.5 lb/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
or 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
1–2pt/100 gal
4 qt/A
2.5 lb/A		 0.5
Durango DMA/Duramax no NIS/COC recommended
ammonium sulfate (optional)
8.5–17 lb/A
1
Envive (burndown) crop oil/modified seed oil
or nonionic surfactant		 1 gal/100 gal
1 qt/100 gal		 1
Extreme nonionic surfactant
plus ammonium sulfate		 1 pt/100 gal
2.5 lb/A		 1
FirstRate 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 gl		 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 (min.)
4 lb/100 gal (min.)		 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
Glyphosate nonionic surfactant
plus ammonium sulfate (optional)		 2 qt/100 gal
8.5–17 lb/100 gal		 1–6
Gramoxone Inteon nonionic surfactant
or crop oil concentrate		 1 pt/100 gal
1 gal/100 gal		 0.5
Harmony SG 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/Ignite 280 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 vegetable 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 / Powermax no NIS/COC required
ammonium sulfate (optional)
8.5–17 lb/100 gal
<1
Scepter nonionic surfactant
or crop oil concentrate		 1 qt/100 gal
1 gal/100 gal		 1
Select crop oil concentrate
plu nitrogen solution (optional)		 2–4 qt/100 gal
1–2 qt/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 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)		 —
8.5–17/100 gal		 1–6
Touchdown HiTech nonionic surfactant
plus ammonium sulfate (optional)		 1 qt/100 gal
8.5–17/100 gal		 1–6
Valor XLT (burndown) crop oil concentrate
or nonionic surfactant
plus ammonium sulfate (optional)		 1–2 pt/A
1 qt/100 gal
8.5–17 lb/100 gal		 1