The herbaceous species on our study plots recovered quickly in ail 

 treatments. The first-year recovery was somewhat less on the scalped 

 plots where roots, stolons, and seeds in the surface layer of soil were 

 physically removed, but it was not enough less to noticeably affect 

 growth of the cherry seedlings. The clipping and fertilizing treatments 

 definitely did not provide the essential conditions for good seedling 

 growth. 



It appears that drastic reduction and continued suppression of the 

 herbaceous competition for at least 1 year — and perhaps longer — are 

 required. Repeated cultivation is one proven way of accomplishing this. 

 However, the necessary weed control might also be achieved with herbi- 

 cides; and this possibility is being explored in current studies. 



-|harold J.^UNTZINGER j 



Research Forester 

 Northeastern Forest Experiment Station 

 Forest Service, U. S. Dept. Agriculture 



Warren, Pa. 



