Vegetable growers can now add Sandea herbicide to their weed control arsenal, under a Section 3 label approved in mid-January by the Environmental Protection Agency.
Sandea, which contains the active ingredient halosulfuron-methyl, promises control of yellow and purple nutsedge and select broadleaf weeds in several vegetable crops.
A dry flowable formulation, Sandea can be absorbed through roots, shoots and foliage and is translocated within the plant. Labeled crops include asparagus, cucumber, winter squash, pumpkins, cantaloupes, tomatoes, snap beans and dry beans. In addition, row middle/furrow applications are labeled for the curcurbit and fruiting vegetable crop groups.
The herbicide offers flexible application timing with pre-emergence and postemergence application options. Low use rates, and no required mechanical incorporation also make it east to use, according to Gowan Company, the product's manufacturer.
According to the product label, Sandea may not be applied by air, through an air assisted field crop sprayer, or through any type of irrigation system. In addition, producers are prohibited from applying more than 2.0 ounces of the product per acre in a 12-month period.
“The level of weed control following Sandea application is dependent upon application rate and method, weed species, size and infestation intensity at application time, and growing conditions. Soon after Sandea is applies, growth of susceptible weeds is inhibited, and they are no longer competitive with the crop. Following growth inhibition, the leaves begin to discolor, with complete control typically occurring within seven to 14 days, depending on weed size, species, and growing conditions,” the product label states.
Crop use recommendations for the herbicide are divided into five geographically diverse regions, with Region C covering Arkansas and points west including Arizona, New Mexico, Oklahoma and Texas. Region D covers most of the Mid-South and Southeast including Louisiana, Mississippi, Alabama, Florida, Georgia, North Carolina, South Carolina and Tennessee. Product registration is pending in California.
Under the label, Sandea may be applied at a rate of 0.5 to 1.0 ounces per acre using a minimum of 15 gallons of water per acre, depending on crop and region.
In some cases, a second application of product may be necessary to optimize nutsedge control in those areas where nutsedge has emerged or re-grown.
For more information, or to obtain a copy of the product label, visit Gowan Company's website at www.gowanco.com.