WEEDS AND WOODY PLANTS ON RANGELANDS AND PERMANENT 



PASTURES 



Aerial or farm-sprayer applications (volumes of spray refer to aerial 

 applications; treatments with farm sprayers may be made at higher 

 volumes). 



(1) For control of sand sagebrush: Ester of 2,4-D at 1 pound in diesel 

 oil, or in an emulsion of 1 gallon of oil to 2 to 4 gallons of water per acre, 

 applied to the foliage in May or early June when plants are growing rapidly 

 and have made 6 to 8 inches of new growth. 



(2) For control of big sagebrush: Ester of 2,4-D at 1 to 2 pounds in 5 

 gallons of oil, water, or oil-water emulsions per acre applied when bunch 

 grasses are heading. 



(3) For control of mesquite: Ester of 2,4,5-T at 1/3 to 3/4 pound in oil 

 or in an emulsion of 1 gallon of diesel oil to 3 gallons of water per acre 

 applied to foliage. Silvex also has shown promise for the control of 

 mesquite. In the arid Southwest, repeated annual treatments are neces- 

 sary at the highest rates for 2 or more years. 



(4) For control of shinnery oak: Repeated annual applications of an ester 

 of 2,4,5-T or 2,4-D at 1 pound in oil, or in an emulsion of 1 gallon of 

 diesel oil to 2 to 4 gallons of water per acre, applied to foliage. 



(5) For control of post oak, blackjack oak, and other associated woody 

 plants: Ester of 2,4,5-T or silvex at 2 pounds in an emulsion of 1 gallon 

 of diesel oil to 4 gallons of water, or in 5 gallons of diesel oil per acre. 

 Application should be repeated for 2 to 3 consecutive years using 1 to 2 

 pounds of either chemical. A mixture of 2,4-D and 2,4,5-T also may be 

 used with 2,4,5-T making up at least 1/3 of the mixture. The first applica- 

 tion should be made with 3 pounds of the mixture and succeeding treat- 

 ments with 2 pounds per acre in an emulsion of 1 gallon of diesel oil to 

 4 gallons of water or in 5 gallons of diesel oil. 



(6) For control of buckbrush: Repeated applications of an ester of 

 2,4-D at 1 to 2 pounds per acre in an emulsion of 1 gallon of diesel oil 

 to 3 gallons of water or in 4 gallons of diesel oil. Treatment should be 

 made soon after full foliage has been reached. 



(7) Loco, silvery lupine, two-grooved milk vetch, princes plume, 

 woody aster, and waterhemlock: Ester of 2,4-D at 2 pounds per acre 

 at the bud-to-early bloom stage. Repeated annual applications may be 

 necessary. 



(8) Tansy-ragwort: Ester of 2,4-D at 2 pounds per acre at the early 

 bolting stage. 



(9) Halogeton: Low-volatile ester of 2,4-D at 2 pounds per acre at the 

 early branching prebloom stage. 



(10) Deathcamas: Ester of 2,4-D at 3 pounds per acre at the early bud 

 stage. 



(11) Orange sneezeweed: Ester of 2,4-D at 3 to 5 pounds per acre at 

 the prebloom stage. 



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