TURF USE APPLICATION - POSTEMERGENCE CONTROL OF ANNUAL AND PERENNIAL SEDGES (SINGLE APPLICATION)
Turf Use Instructions
Dismiss South Herbicide is a selective post emergence herbicide which controls annual grasses, broadleaf weeds and sedges in established turf areas including, but not limited to, residential, commercial and institutional lawns, athletic fields, commercial sod farms, golf course fairways and golf course roughs.
Dismiss South Herbicide is formulated as a flowable (suspension concentrate) containing 4 lbs of active ingredient per gallon. The mode of action of Dismiss South Herbicide involves uptake by both weed roots and shoots. Application of Dismiss South Herbicide requires soil moisture for activation. The amount of soil moisture required for activation following application depends on existing soil moisture, organic matter content and soil texture.
Weed Control in Turfgrasses
Use Precautions for Turf Use
This product may be used on seeded, sodded or sprigged turgrasses that are well established. First application of this product can be made following the second mowing providing the turfgrass has developed into a uniform stand with a good root system. Turfgrass injury could result from application of this product on turfgrass that is not well established or has been weakened by stresses such as unfavorable weather conditions, disease, chemical or mechanical influences.
When applied as directed under the conditions described, the following established turfgrasses are tolerant to Dismiss South Herbicide at the recommended use rates in a range from 0.290 to 0.450 lb a.i./acre (9.5 to 14.4 fl. oz/acre or 0.220 to 0.331 fl. oz./1,000 sq. ft).
Bahiagrass: Dismiss South Herbicide application may cause temporary discoloration to exposed leaf surfaces on certain cultivars of zoysiagrass bahiagrass, centipede and hybrid bermudagrass. Treated turfgrass will recover with new growth.
Discolored leaf tissue will be removed with mowing. To reduce potential for discoloration, do not apply Dismiss South Herbicide on turfgrass that is weakened by weather, mechanical, chemical, disease or other related stress. Maintain proper cultural practices such as adequate moisture and fertility levels to promote healthy turf growth.
*Dismiss South Herbicide has demonstrated tolerance on warm season turfgrasses. However, not all varieties have been evaluated. Turfgrass managers desiring to treat newly released varieties should first apply Dismiss South Herbicide to a small area prior to treatment of larger areas.
Application to reseeded, overseeded or sprigged areas:
Reseeding, overseeding or sprigging of treated areas within one (1) month after application of this product could inhibit the establishment of desirable turfgrasses. Overseeding of bermudagrass with perennial ryegrass at two (2) to four (4) weeks after an application can be done if slight injury to perennial ryegrass can be tolerated.
Best results are obtained for reseeding or overseeding when mechanical or power seeding equipment (slit seeders) are used to give good seed to soil contact and proper soil cultivation, irrigation and fertilization practices are followed.
This product may be applied to established sod. Allow sod to establish a good root system, a uniform stand and to fill in the exposed edges. It is recommended that sod be established for up to three (3) months before an application of Dismiss South Herbicide. Do not apply this product within three (3) months of harvest.
Other Use Precautions:
Do not apply to golf course putting greens or tees.
Do not use on turfgrasses other than those listed in table 1 on the label.
Do not apply to Turfgrasses under stress.
Do not apply with surfactants unless previous experience has demonstrated combinations with surfactant to be physically compatible and non-injurious to the grass type in question.
Do not graze or feed livestock forage cut from areas treated with Dismiss South Herbicide.
Do not apply Dismiss South Herbicide North of North Dakota State Highway 13 or Minnesota State Highway 210.
Do not apply directly to landscape ornamentals or ornamental beds. Temporary turfgrass discoloration has been observed when Trinexapacethyl (Primo) has been either tank-mixed or applied within 7 days of a Dismiss South Herbicide application. It is recommended that Trinexapac-ethyl (Primo) applications be made 7 days prior to, or after Dismiss South Herbicide application to reduce risk of turfgrass discoloration.
POSTEMERGENCE CONTROL OF ANNUAL AND PERENNIAL SEDGES
Dismiss South Herbicide will control or suppress sedges (Table 3) when applied at a rate of 9 to 14.4 fl oz/acre (0.220 to 0.331 fl. oz./1,000 sq. ft.). Apply the highest rate consistent with the rate needed for turfgrass safety in Table 1. Rates lower than 14. 4 fl oz/acre (0.331 fl. oz/ 1,000 sq. ft.) will generally control sedges for up to 60 days. A rate of 14.4 fl oz/acre (0.331 fl oz/1,000 sq. ft.) will provide approximately 75% control for up to 60 days. Yellow nutsedge (Cyperus esculentus) is the most susceptible sedge species.
Good spray coverage is needed for optimum control of sedges. Temporary discoloration of some turfgrass species may result from use of surfactant. Use of surfactants is not recommended.
PURPLE NUTSEDGE; For optimum control of purple nutsedge, split applications may be required (Table 4). Apply 9.5 ounces per acre as an initial application followed by a second application when evidence of actively growing purple nutsedge is visible. Do not exceed the maximum rate per acre based on turfgrass variety listed in Table 1; Tolerant grases.