VII. CONTROL OF WEEDS ALONG FENCEROWS, DITCHBANKS, 

 ROADSIDES, UTILITY LINES, AND OTHER NONCULTIVATED 

 AREAS 



WOODY PLANTS 



Foliage Sprays 



(1) Woody plants and weeds, including mixed brush species : Ester of 

 2,4-D, 2,4,5-T, silvex, or MCPA at 2 to 3 pounds per 100 gallons of water, 

 applied as a wetting foliage spray. A mixture of 2,4-D and 2,4,5-T is sug- 

 gested for control of mixed brush species, some of which are tolerant to 

 one of the herbicides but not the other. A wetting foliage spray of ammonium 

 sulfamate at 3/4 pound in 1 gallon of water also will effectively control 

 mixed brush species. 



Basal S prays During Growth or Dormant Periods 



(1) Trees and brush less than 6 inches in diameter : Ester of 2,4-D, 

 2,4,5-T, or mixtures of these herbicides, at 8 to 16 pounds in 100 gallons 

 of diesel oil applied as a basal spray during either dormant or active 

 growth periods. Apply the spray to the entire basal area of all stems, 

 completely wetting the bark to a height of 6 to 12 inches. Basal treat- 

 ment usually is more effective than foliage applications on tolerant species. 



Cut Surface Treatments 



(1) Frill application: Ester of 2,4,5-T or 2,4-D at 8 to 16 pounds in 100 

 gallons of diesel oil applied in the frills made by overlapping ax cuts 

 through the bark near the base of the tree. Apply the solution until frills 

 are wet. This treatment, which gives good control of trees 6 inches in 

 diameter or larger, also is suggested for killing trees with thick bark. 



(2) Cup or notch treatment : 1/2 ounce (about 1 tablespoon) or more of 

 ammonium sulfamate crystals per notch in notches made not more than 

 6 inches apart around the base of stems and, when possible, on root collars. 

 This treatment will kill trees up to 10 inches in diameter when used any 

 time throughout the year. 



(3) Tree injections : Ester of 2,4,5-T at 24 to 48 pounds in 100 gallons 

 of diesel oil will control trees under 6 inches in diameter when injected into 

 outer sapwood with a tree injector. Injections should be made not more than 

 2 inches apart around the base of stems, and not less than 1/6 fluid ounce 

 (about 1 teaspoon) of the solution should be applied in each injection. 



Stumps and Stump Sprouts 



(1) 2,4,5-T, or mixtures of 2,4-D and 2,4,5-T, at 8 to 16 pounds per 

 100 gallons of diesel oil applied so that tops and sides of stumps are com- 

 pletely wet to ground level. All exposed roots should be sprayed. 



(2) Ammonium sulfamate may be applied as crystals to surface of 

 stumps at the rate of 1 tablespoon for each 2 inches of stump diameter, 

 or the entire stump may be sprayed with a solution containing 4 to 6 

 pounds of the herbicide per gallon of water. 



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