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| Q. |
Why has Spartan® received Section 18 Specific Exemption labeling?
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| A. |
The
Environmental Protection Agency (EPA) permits Spartan herbicide to be
used in sunflower fields where kochia infestations will cause economic
loss if not controlled. Because there is a lack of approved products
for use in conservation tillage programs, the EPA has allowed a special
exemption for Spartan, a product that has been proven effective. |
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| Q. |
What states have received the Section 18 labeling for the 2002 crop season?
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| A. |
Spartan has been approved for use in Nebraska, North Dakota, South Dakota, Colorado, Kansas, Minnesota, Wyoming and Montana. |
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| Q. |
How effective is Spartan?
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| A. |
Spartan
herbicide has been shown to provide greater than 85% control of kochia,
as well as other yield-threatening broadleaves, such as Russian thistle
and various pigweeds. |
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| Q. |
How does Spartan work?
|
| A. |
Spartan
herbicide contains the active ingredient sulfentrazone. It works as a
protoporphyrinogen oxidase (PPO) inhibitor, disrupting the enzyme
system necessary for the production of chlorophyll. Most weeds die as
they begin to emerge from the soil. The rest die immediately
thereafter, when they're exposed to the light. |
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| Q. |
How do I determine the amount of product to use?
|
| A. |
Your
use rate will depend upon soil type and the amount of organic matter
present. Suggested rates appear below. If you're applying Spartan 14 to
30 days before planting, use the higher of the approved rates for your
soil type. Additional recommendations appear on our Stewardship page.
Organic Matter Coarse Soil Medium to Fine Soil a.i./A oz. Prod/Acre
a.i./A oz. Prod/Acre
Less than 1.5% 0.094 - 0.125 2.0 - 2.67 0.125 - 0.141 2.67 - 3.0
1.5 to 3.0% 0.125 - 0.141 2.67 - 3.0 0.141 - 0.188 3.0 - 4.0
Greater than 3.0% 0.141 - 0.188 3.0 - 4.0 0.188 - 0.25 4.0 - 5.33
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| Q. |
How soon can I rotate other crops into Spartan-treated fields?
|
| A. |
Soybeans can be planted any time after a Spartan-treated sunflower crop. Other guidelines appear below.
Crop Rotation Interval
Soybeans Anytime
Wheat 4 months
(Barley, Rye, Oats and Triticale)
Corn 10 months
(Field, Pop and Seed)
Sorghum 10 months
Alfalfa 12 months
Cereal Grains 12 months
(Buckwheat, Pearl Millet, Proso Millet, Teosinte and Wild Rice)
Sweet Corn 18 months
Canola 24 months
Sugar Beets 36 months |
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