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EPA registration data for Reg. 279-9602 →
Harmony Extra SG is a soluble granule herbicide used for the selective postemergence control of certain broadleaf weeds. It is formulated for use on wheat (including durum), barley, oat (both spring and winter), triticale, and fallow. The active ingredients are Thifensulfuron-methyl and Tribenuron-methyl. The product is absorbed through the leaves of susceptible weeds. It is most effective when applied to actively growing weeds. Users should be aware that environmental conditions like heavy rainfall, cold weather, or drought can impact efficacy or cause crop injury. When applying, avoid drift to non-target plants and protect pollinators. For handling, applicators must wear long-sleeved shirts, long pants, chemical-resistant gloves (butyl, natural rubber, neoprene, or nitrile, $\ge$14 mils), and shoes plus socks. Always wash hands thoroughly with soap and water after handling and before eating, drinking, or using the toilet. If the product gets on skin or clothing, remove contaminated items and rinse skin immediately with plenty of water for 15-20 minutes.
Pests covered (2)
certain broadleaf weedsVegetation
Areas treatable (1)
wheat (including durum), barley, oat (spring and winter), triticale, and fallow
How to treat each type of area 1
wheat (including durum), barley, oat (spring and winter), triticale, and fallow
light to heavy
| Target pest |
Location |
Rate |
Unit |
Label notes |
| certain broadleaf weeds |
Outdoor |
0.45 to 0.9 |
oz/acre |
Make applications after the crop is in the 2-leaf stage, but before the flag leaf is visible. For heavy infestation, use 0.9 oz/acre. |
Mixing instructions 1
| For pests |
Location |
Amount |
Per |
Label notes |
| broadleaf weeds |
Outdoor |
0.45 to 0.9 |
oz/acre |
To be mixed and completely dissolved in water and applied as a uniform broadcast spray. |
Worker safety
Re-entry interval (REI)
12
PPE required
Long-sleeved shirt and long pants; Chemical-resistant gloves (butyl rubber, natural rubber, neoprene or nitrile rubber) $\ge$14 mils; Shoes plus socks.
Timing & weather
- Avoid application during severe weather conditions such as drought, heavy rainfall, or extreme temperatures to prevent crop injury.
Use restrictions 6
- DO NOT use on any other crop.
- DO NOT harvest wheat or barley sooner than 45 days after the last application.
- DO NOT apply to crops underseeded with another crop.
- For wheat, barley, and triticale, the total rate per year cannot exceed 1.5 oz/acre.
- For oat, the total rate per year cannot exceed 0.6 oz/acre.
- DO NOT apply more than 0.9 oz/acre in a single application for wheat/barley/triticale or 0.6 oz/acre for oat.
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