Laserfiche WebLink
A WEED REPORT horn the book Weed Cnntrof in Natueal Areas in the Western United States Saftcedar and tamarisk <br /> AROMATIC AMINO ACID INHIBITORS <br /> Glyphosate Rate:Broadcast foliar treatment:1.5 to 3.3 qt product(Roundup ProMax)/acre{1.7 to 3.7 lb a.e./acre). <br /> Rodeo, Cut stump treatment:100%of concentrated product to wet the cambial area of the stump face.. <br /> Aquamoster Timing.Broadcast treatments should be made in late summer or early fall when plants are translocating <br /> carbohydrates to the below-ground tissues.Cut stump treatments can be made year-round but avoid <br /> treatment under drought conditions. <br /> Remarks:Glyphosate provides only partial control of Tornarix.species.Because the herbicide precipitates <br /> out when in contact with divalent and trivalent salts,the salty excretions on the foliar glands will reduce <br /> the effectiveness of glyphosate.Foliar treatment with glyphosate will probably be most effective if <br /> applied shortly after a rainfall event. <br /> BRANCHED-CHAIN AMINO ACID INHIBITORS <br /> Imazapyr Rate:Broadcast foliar treatment:1 qt product(Arsenal AC}/acre or 2 qt product(Habitat)/acre(1 lb <br /> Arsenal AC, a.i f acre).Spot treatment:1%v/v Habitat spray-to-wet or 3 to 5%for low volume treatments in 10 gal <br /> Habitat,Stalker, water per acre(GPA)_Cut stump treatment:10%v/v of concentrate on outer cambial region.. <br /> Chopper,Polaris Timing:Late summer or early fail when plants are fully expanded and are translocating carbohydrates to <br /> the below-ground tissues. <br /> Remarks:Imazapyr is the most widely used herbicide to control saltcedar.Both conventional and low- <br /> volume applications can give good control.For foliar broadcast or spot treatments add 1%v/v of a non- <br /> ionic surfactant or methylated seed oil.Imazapyr is relatively nonselective and can damage or kill other <br /> desirable non-target species through direct contact or drift.Low volume treatments are applied to the <br /> upper portions of the plant,with coverage not exceeding 30%.Low volume treatments can be very <br /> effective on previously burned,recovering plants 6 to 10 ft tali.Spot treatments can be.made using a <br /> drizzle gun.In addition to ground equipment,treatments can be made by aerial equipment.Helicopter <br /> treatments are considered better than fixed-wing as they allow for more consistent results.Herbicide <br /> activity may be reduced as saltcedar height and stem number increase.Plants should not be removed for <br /> at least 2 years to ensure good control.ALS-resistant kochia has invaded some locations after control of <br /> Tamorix with imaza,pyr. <br /> Imazapyr+ Rate:Broadcast foliar treatment:1.5 to 2 pt Habitat/acre plus 1 to 2.pt glyphosate product/acre.Spot <br /> glyphosate foliar treatment:0.5%v/v of each product for most consistent results.Apply with 0.25%v/v non-ionic <br /> surfactant. <br /> Timing-Postemergence treatments should be made in late summer or early fall when plants are <br /> translocating carbohydrates to the below-ground tissues. <br /> Remarks:This combination is nonselective.Spot treatments can be made using a drizzle gun.Plants <br /> should not be removed for at least 2 years to ensure good control. <br /> RECOMMENDED CITATION:DiTomaso,J.M.,G.B. Kyser et al.2013. Weed Control in Natural Areas in the Western United States. <br /> Weed Research and Information Center,University of California.544 pp. <br /> 4 of 4 2013 <br />