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Halosulfuron (Sandea) injury. An herbicide labeled for use on many cucurbits (cucumbers, melons, pumpkins), halosulfuron controls many broadleaf weeds and nutsedge but not grasses. This herbicide can be applied pre-plant under plastic or post-transplant on bare ground and row middles. Cool temperatures at time of application and use of an organophosphate insecticide may enhance injury. The application of Sandea over the top of melons or cucumbers growing on plastic can cause injury. Symptoms appear as a patchy yellowing of leaves on affected plants.

Halosulfuron injury to pumpkin foliage.

(Photo: Timothy Coolong, University of Kentucky)

Halosulfuron injury to muskmelon foliage.

(Photo: Terry Jones, University of Kentucky)

Management:

• Use only on labeled crops and at appropriate rates.
• Do not spray on plastic mulch, as this herbicide may wash from the surface of the plastic and concentrate in the planting hole.

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