ESTABLISHED LAWNS AND TURF 



Broadleaved Weeds 



(1) For control of dandelion, buckhorn, other plantains, curled dock, and 

 many other relatively easy-to-kill broadleaved weeds: Amine salts of 2,4-D 

 at 1 pound per acre. Apply any time weeds are actively growing. Fall treat- 

 ments are preferred because during this season desirable grasses invade 

 more readily the space left by dead weeds. Lawn grasses grow most rapidly 

 during the fall and spring. NOTE: For treating home lawns or small areas 

 with hand equipnaent, follow the directions given in the table. 



(2) For control of wild onions, wild garlic, red sorrel, knotweed, and other 

 hard-to-kill broadleaved weeds: Repeated sprayings of low-volatile esters 

 of 2,4-D or amine salts of 2,4-D at 1 pound per acre, plus a detergent to 

 improve wetting of the plants with the spray; or follow directions on label of 

 container, using highest recommended rate. To control wild garlic and wild 

 onion, spray in late fall and again in late winter or early spring each year; 

 to control such weeds as red sorrel and knotweed, spray annually in the 

 spring. Knotw^eed should be strayed with silvex soon after emergence. 



(3) For control of chickw^eed, henbit, knotweed, burclover, pennywort, 

 white clover and many other weeds: Silvex at 1 to 1-1/2 pounds per acre. 

 Follow directions for mixing on label of container, Endothal at 2 pounds per 

 acre in 50 to 100 gallons of water per acre will control burclover, knotweed, 

 pennywort, and henbit while still small. Endothal may give temporary dis - 

 coloration of foliage of ryegrass and bluegrass. 



Crabgrass and Other Weed Grasses 



(1) For pre-emergence control of crabgrass: Applications in late March 

 or early April of calcium arsenate at 10 to 16 pounds per thousand square 

 feet. 0-(2,4-dichlorophenyl)0-methyl isopropylphosphorannidothioate at 20 

 pounds per acre, and 2,3,5,6-tetrachloroterephthalic acid, dimethyl ester, 

 at 10 pounds per acre are effective for selective control of crabgrasses in turf. 



(2) Post-emergence control of crabgrass and other grasses: For control 

 of crabgrass, Dallisgrass, goosegrass and sandbur in turf: DMA and similar 

 arsonates, applied according to instructions on the label. DMA may cause a 

 slight discoloration of the turf which disappears in 7 to 14 days. 



(3) For control of perennial grasses such as orchardgrass, timothy, 

 quackgrass, nimblew^ill, and others: Dalapon at 1/4 pound dissolved in 1 

 gallon of water applied to individual plants or infested areas. Since lawn 

 grasses are also killed by this treatment, use care in treating weeds and 

 limit the areas sprayed, Dalapon usually will disappear from warm, moist 

 soil within 3 to 6 weeks, but persists longer in cool or dry soils. 



Comnnents and precautions 



(a) DNBP and calcium arsenate are poisonous to warmblooded animals. 

 They usually are not hazardous to man or animals after they are applied to 

 lawns for weed grass control. As a precautionary measure, however, keep 

 children and animals off sprayed areas until the first rain (or sprinkling) 

 following treatment. 



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