56 SALTCEDAR 



The plant is rather difficult to kill with herbicides. This is par- 

 ticularly true when it is on exposed margins or other unflooded 

 sites. Effective control resulted from the use of Ammate at 60 

 pounds to 100 gallons of water in the Kentucky Woodlands 

 Refuge in flooded habitat (Steenis, 1950). 



2,4,5-T is more effective on buttonbush than 2,4-D. Recent 

 tests on buttonbush control at the Patuxent Refuge in mid-August 

 have shown promising preliminary indications from treatments 

 with combinations of 50 pounds TCA and 4 pounds 2,4,5-T. 



REFERENCE 



1950. Studies on the Use of Herbicides for Improving Waterfowl Habitat in Western 

 Kentucky and Tennessee. J. H, Steenis. Jour. Wild. Mgt., 14 (.2). 



SALTCEDAR 



BOTANICAL 



Several species of tamarisks (Tamarix), of about 75 that are 

 native to the Old World, have been cultivated as ornamentals in 

 this country. Of these, saltcedar (T. pentandra) , has become a 

 serious pest in the West during the past half -century. Normally 

 it is a shrub or small tree, but under favorable conditions it 

 grows 25 feet or higher. On reservoir margins, river deltas, and 

 other places that are moist part of the year, saltcedar forms 

 heavy thickets, sometimes pure stands extending for miles. More 

 frequently it is mixed with cottonwoods and willows. When their 

 tops are killed or cut, saltcedar trees regenerate readily by 

 sprouts. They also reproduce effectively by seed, frequently thou- 

 sands of seedlings appearing in one season. 



