|Trade Name: Barricade, Prodiamine, Resolute, Regalkade G||Common Name: prodiamine||Formulations: 65 WG, 4FL* / 0.5 G|
Selective preemergence residual control of many annual grasses and some broadleaf weeds in turf, landscapes, nursery crops, and Christmas tree farms.
|Amount of Active Ingredient||Amount by Formulation|
|65 WG||4 FL||0.5 G|
|Per Acre||0.75 to 1.5 lb||1.15 to 2.3 lb||21 to 48 oz||150 to 300 lb|
|Per 1,000 sq. ft.||0.27 to 0.54 oz||0.42 to 0.84 oz||0.5 to 1.1 oz||3.4 to 7 lb|
Major Weeds Controlled
Annual grasses such as crabgrass, goosegrass, foxtails, barnyardgrass, annual bluegrass, and broadleaf signalgrass. Some annual broadleaf weeds such as carpetweed, chickweed, henbit, knotweed, oxalis, shepherdspurse, spurge, lambsquarters, and pigweed.
Major Weeds Not Controlled
Established weeds, perennial grasses, and large-seeded broadleaf weeds. Weak on American burnweed, bittercress, common groundsel, eclipta, morningglory, phyllanthus, ragweed, and dogfennel. Does not control nutsedge.
For Best Results
Apply before weeds emerge. In newly planted or potted ornamentals, water plants to settle the soil before applying Barricade. Barricade must be incorporated with 1⁄2-inch of rainfall or irrigation or with shallow cultivation as soon as possible after application. Incorporation should not be delayed more than 14 days after application.
Cautions and Precautions
Spray applications are more injurious to ornamentals than granular treatments. Young, tender foliage is more sensitive to injury than mature foliage. Do not use in propagation or liner production. On landscape ornamentals and nurseries no more than 1.5 lb ai/A may be applied in a calendar year. On turf, no more than 1.15 lb/A or the maximum yearly application rate, whichever is less, may be applied in any 60-day period. Maximum yearly application rates range from 1.0 to 2.3 lb/A, depending upon turf species.
In containers, expect no more than 6 to 8 weeks of residual control in the Southeastern U.S. (perhaps longer residual in northern climates). In field situations or landscape plantings from 10 to 16 weeks of residual grass control can be expected. Split applications usually provide longer residual weed control compared to single high-dose treatments.
Volatility and Leaching Potential
Photodecomposition and volatilization occur when the product remains on the surface for prolonged periods without incorporation. Strongly adsorbed by soil; not readily leached. Degrades rapidly in saturated soils.
Symptoms and Mode of Action
Absorbed through roots and inhibits root and shoot growth, through interference with cell division. Foliar symptoms include stunted, yellowed new growth. Stem girdling and swelling at the soil line may occur in some sensitive species. Root tips exposed to the herbicide will swell producing “club-like” roots. MOA Group 3.
|Worker Protection Standards||REI: 12 hours|
|PPE: coveralls, chemical resistant gloves, shoes plus socks|
|Manufacturer: Syngenta (and others)||EPA Reg. # 100-1139|
|GR formulation: Regal Chemical Co.|
* Caution: When the product is available in more than one formulation, the formulation designated with the asterisk (*) was used as the primary source of information for this publication.
Publication date: Nov. 13, 2014
Revised: Jan. 29, 2021
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