208 REPORT OF STATE BOARD OF HORTICULTURE. 



13. The European and Oriental pears can fertilize each other, and many 

 varieties of the domestic, Japanese and native plums are likewise inter- 

 fertile, provided they bloom tog'ether. 



14. The pollen of some varieties will give larger fruit than that of others 

 when it falls on or is applied to the pistils of either self-sterile or self-fertile 

 varieties. 



15. Among' our common orchard fruits cross-pollination seldom has an 

 immediate influence on the fruit itself. 



16. Cross-pollination probably gives better results than self-pollination 

 with nearly all varieties. 



17. It is advisable and practical to plant all varieties of oi'chard fruits^ 

 be they self-sterile or self-fertile, with reference to cross-pollination. 



18. Insects are probably more important than wind foi- carrying pollen 

 from tree to tree. 



19. Final Suyyestions — a. When setting- out new orchards, do not plant a 

 solid block of each variety, but mix them intelligently, b. If established 

 orchards are unfruitful because of self-sterility, it may be profitable to put 

 a few grafts of another variety in each tree. c. Keep fruit trees v^ell nour- 

 ished, but do not stimulate them to an over-vigorous growth. 



