and availability of chemicals. KOCN should not be used on lawns or turf containing a 

 high percentage of the bent or fescue grasses. 



For the control of chickweed on extensive turf areas when fall treatments are not 

 possible, use 1 pound of amnnonium DNBP or 1 1/2 pounds of amine DNBP in 40 gallons 

 of water per acre. The treatment should be made in late winter or in early spring as 

 soon as chickweed appears. Re-treatment may be necessary to control regrowth and 

 late germinating chickweed. 



Fall Treatments for Control of Broadleaved Weeds 



( 1 ) Home Lawns. --For the control of broadleaved weeds in home lawns in the fall a 

 mixture containing 1 ounce or 2 tablespoons of an amine salt of 2,4-D and 4 ounces or 

 8 tablespoons of an ammonium salt of DNBP(4,6-dinitro ortho secondary butyl phenol) 

 (or 2 ounces or 4 tablespoons of an amine salt of DNBP) in 1 gallon of water per 1,000 

 square feet applied in the fail after chickweed has germinated will give good control of 

 chickweed and other weeds such as dandelions, plantain, curled dock, wild onion, wild 

 garlic, and henbit. 



KOCN may be used to replace DNBP in the mixture if DNBP compounds are not 

 available. KOCN should be applied at 3 1/2 ounces per gallon of water per 1,000 square 

 feet. 



Fall applications of 2,4-D are more effective than spring applications in controlling 

 dandelions, plantain, curled dock, and other perennial weeds in lawns in many areas. 

 In areas where crabgrass is a serious lawn weed, broadleaved weeds that are killed by 

 spring applications of 2,4-D will be replaced by germinating crabgrass before the turf 

 grasses fill in the sod. The turf grasses will fill in the sod prior to crabgrass emer- 

 gence if 2,4-D is used to kill broadleaved weeds in the fall rather than in the spring. 



(2) Extensive Turf Areas . --For the control of broadleaved weeds in the fall on 

 extensive turf areas, a mixture consisting of an amine salt of 2,4-D at 1 pound (1 quart 

 of any product containing 4 pounds of 2,4-D per gallon) and 1 to 1 1/2 pounds of DNBP 

 (1 gallon of annmonium DNBP or 1/2 gallon of an amine salt of DNBP) in 40 gallons of 

 water per acre applied in the fall after chickweed has germinated will give good control 

 of chickweed and other weeds such as dandelions, plantain, curled dock, ground ivy, 

 wild onion, wild garlic, and henbit. The treatment should be applied in the late summer 

 or early fall during periods favoring active plant growth. KOCN at 10 pounds in 40 

 gallons of water per acre may be used to replace DNBP in the above mixture. 



Control of Spot Infestations of Weeds 



(Fall or Spring Treatments) ... - v 



(1) Home Lawns . -- Weedy lawn grasses such as orchard grass, timothy, quackgrass, 

 goose grass, dallis grass, nimble will, and others may be killed with an application of 

 dalapon or TCA when they occur in spot infestations in lawns. Prepare the solution by 

 dissolving 1/4 pound dalapon or 1/2 pound of TCA in 1 gallon of water. Using a syringe 

 or other application devices wet the crowns of the weedy grass plants. This treatment 

 will also kill desirable turf grasses if the chemical is applied directly to the lawn 

 grasses. The localized spot treatment of weedy grasses is possible without injury to 

 lawn grasses only if the chemical application is restricted to the crowns of the weedy 

 grasses. 



Broadleaved weeds such as wild onion, wild garlic, dandelions, and plantain may be 

 killed with localized treatments of 2,4-D without spraying the entire lawn. For the con- 

 trol of spot infestations of wild onion or wild garlic use a 5 percent solution of 2,4-D in 

 water. This solution may be prepared by mixing 5 ounces of an amine salt of 2,4-D to 

 approximately 1 gallon of water. Place a rubber glove over your hand to protect it from 



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