- 3 - 



By 1975, the success o£ the continuing IR-2 and regional proj- 

 ects was demonstrated by examining the records for the release of 

 material from the repository. In 1975, 18,960 Prunus , 3115 Malus 

 and 1600 Pyrus buds representing respectively, 640, 122, and 76 

 cultivar selections were released to 53 research or regulatory sci- 

 entists. In addition, indexed budstocks of 21 patented selections 

 in the repository were returned to commercial contractors. The lat- 

 ter distributed material represented the first release of incorpo- 

 rate patented budwood material. 



Up to 1975, repository material has been distributed by re- 

 quests to 193 research or regulatory scientists, representing 34 

 states, 4 Canadian provinces and 33 foreign countries. 



(To be oontinued in Jan-Feb, 1977 issue.) 



PUBLICATIONS AVAILABLE 



Available from the Cooperative Extension Service, Michigan 

 State University, East Lansing, Michigan 48824, for $1.00 is Exten- 

 sion Bulletin E-791, entitled "Problem Perennial Weeds." This pub- 

 lication contains excellent color photographs of problem perennial 

 weeds in Michigan. Since many of these weeds are also found in 

 our tree and small fruit plantings in Massachusetts, this publica- 

 tion will be valuable for their identification. 



"Management of Pick-Your-Own Marketing Operations" is a recent 

 bulletin of the Northeast Extension Marketing Committee, published 

 by the University of Delaware. Its 66 pages cover all aspects of 

 PYO operations and should be of special interest to fruit growers 

 who are contemplating or who are currently using this method of 

 sales. A copy may be obtained by sending $2.50 to the Agricultural 

 Bulletin Room, University of Delaware, Newark, Delaware 19711. 



*************** 



NEMATODE CONTROL AND APPLE TREES 



R.A. Rohde 

 Department of Plant Pathology 



Plant-parasitic nematodes occur in all soils and have been 

 shown by many workers to be the cause of root injury to virtually 

 all plants, including apple trees. The result of feeding by these 



