SOYBEANS - TOPICAL (OVERHEAD) APPLICATION
Active Ingredient: This product contains 0.75 lb. of 4-(2,4-dichlorophenoxy) butyric acid per pound of formulated product.
Apply this product only as specified on the label.
NOTE: Avoid spray drift to susceptible plants and crops: cotton, tobacco, tomatoes, ornamentals, etc. Coarse sprays are less likely to drift.
Spray equipment previously used to apply another phenoxy must be thoroughly cleaned with alkali and water prior to use with DB 7500. Similarly, after using DB 7500 wash sprayer thoroughly before using again to spray susceptible crops. Do not use near greenhouses. Observe all cautions and limitations on labeling of all products used in mixtures. Use agitation to keep solution well mixed, especially if it has been allowed to stand unagitated.
Calibrate sprayer accurately.
DO NOT APPLY WHEN CROP IS STRESSED FROM LACK OF MOISTURE.
DO NOT APPLY THIS PRODUCT THROUGH ANY TYPE OF IRRIGATION SYSTEM.
GROUNDWATER CONTAMINATION: Most cases of groundwater contamination involving phenoxy herbicides such as 2,4-DB have been associated with mixing/loading and disposal sites. Caution should be exercised when handling 2,4-DB pesticides at such sites to prevent contamination of groundwater supplies. Use of closed systems for mixing or transferring this pesticide will reduce the probability of spills. Placement of the mixing/loading equipment on an impervious pad to contain spills will prevent groundwater contamination.
Apply DB 7500 postemergent as an overall spray by ground sprayer or airplane. With ground applications use a boom sprayer with flat fan-type nozzles. Adjust the height of the boom above the crop so the growing terminals of all weeds are sprayed. Use low pressure (about 20 to 40 lbs. per square inch). Do not use boom jet nozzles. With airplane applications DB 7500 has been successfully applied using 5 gallons of total spray solution per acre. The height of the application should insure thorough coverage of the tops of the weeds. Best control has resulted when cocklebur is at least crop high and actively-growing. Airplane application is not recommended in the vicinity of susceptible crops. Do not apply if soybeans are suffering from lack of moisture.
TOPICAL (OVERHEAD) APPLICATIONS
Apply from 7 to 10 days before soybeans bloom through mid-bloom. A good indication that the beans are about to bloom is when the soybean plants have turned a dark green color. If application is made 7 to 10 days before bloom, apply 2.33 pounds of DB 7500 per 10 acres; if application is made from early-bloom through mid-bloom, apply 2.33 pounds of DB 7500 per 8 acres. Use sufficient water to obtain adequate coverage. The rates recommended are for the control of cocklebur. These rates will also stunt or partially control certain other weeds including annual morningglory, velvetleaf, and jimsonweed. In the Midwest use only a directed application since topical application may reduce soybean yields.