tained because of the erratic periodicity of oak seed crops. Another case 

 where this treatment is not applicable is where the understory is com- 

 posed mostly of saplings over 15 feet tall. Here a basal spray, or some 

 other type of sapling treatment, is called for. 



— H. CLAY SMITH and GEORGE R. TRIMBLE, JR. 2 



Northeastern Forest Experiment Station 

 Forest Service, U.S. Dept. Agriculture 



-Mr. Smith, a research forester formerly on the staff of the Station's Timber and Water- 

 shed Laboratory at Parsons, West Virginia, is now at the Station's research unit at Bur- 

 lington, Vermont. Mr. Trimble is project leader for timber-management research at the 

 Parsons Laboratory. 



Caution about Pesticides 



This publication reports research involving pest- 

 icides. It does not contain recommendations for their 

 use, nor does it imply that the uses discussed here 

 have been registered. All uses of pesticides must be 

 registered by appropriate State and/or Federal 

 agencies before they can be recommended. 



CAUTION: Pesticides can be injurious to humans, 

 domestic animals, desirable plants, and fish or other 

 wildlife — if they are not handled or applied prop- 

 erly. Use all pesticides selectively and carefully. 

 Follow recommended practices for the disposal of 

 surplus pesticides and pesticide containers. 



FOLLOW THE LABEL 



U.S. DEPARTMENT OF AGRICULTURE 



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