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MINNESOTA STATE HORTICULTURAL SOCIETY. 



Top-Working with Tender Varieties. 



(Abstract of paper, with lantern slides, delivered at the 1917 winter meeting.) 

 P. L. WASHBURN, STATE ENTOMOLOGIST, UNIVERSITY FARM. 



Receiving a year ago from Harold Simmons, of Howard 

 Lake, a box of large sized specimens of Delicious, Grimes' Golden, 

 King David and Jonathan, all grown in Minnesota on top-worked 

 trees, induced me to carry out some of this work in a small 

 orchard I have at Lake Minnetonka. Hibernal and Patten's 



Jonathan top-worked on Hibernal. 



4. Italian prune grafted on 

 seedling plum. 



Greenings were the varieties used for stock. Scions were ob- 

 tained from Missouri. Top-working was done in the latter part 

 of April, and all scions made a wonderful, growth as evidenced 

 by these slides. 



As an experiment a seedling plum was top-worked with an 

 Italian plum scion obtained from the Pacific Coast. It made a 

 growth of over six feet, as shown by lantern slides. It was 

 hardly expected that this would survive the winter. 



We also show slides illustrating the vigorous growth of a 

 silver prune grafted upon a hardy plum stock by Mr. Arrowood 

 of Nevis, Minn., who kindly gave us two trees for experimental 

 use on our own ground. One of these trees had some bloom upon 

 it this season, but the flowers were evidently sterile, at least they 



