390 Report of the Horticulturist of the 



By consulting the above table it is seen that Brighton and 

 Wyoming -when pollinated with the self-sterile variety, Aminia, 

 were practically sterile and gave no better results than are ob- 

 tained when they are self-pollinated. Black Eagle succeeded no 

 better than Aminia as a fertilizer. It was tried on the self-sterile 

 varieties, Barry and Eumelan. Brighton was not more effective 

 in fertilizing the self-sterile sorts. Black Eagle, Eldorado, Her- 

 bert, Salem, Aminia and Lindley than in fertilizing itself. 

 Slightly better results were obtained when it was tried on Merri- 

 mack and Wyoming, but nothing that would encourage the use of 

 Brighton as a fertilizer for self-sterile sorts. Creveling, which is 

 eelf-sterile, failed to fertilize Brighton. Eldorado, which is self- 

 sterile, gave no results which would encourage its use as a fer- 

 tilizer for self-sterile sorts, and the same is true of the other self- 

 sterile varieties, Hercules, Herbert, Lindley, Merrimack, Salem 

 and Wyoming. Occasionally the use of a self-sterile variety as a 

 poUinizer for other self-sterile kinds would result in the develop- 

 ment of a good cluster as happened when Brighton was pollinated 

 with Merrimack and again with Herbert, but even in such cases 

 failure was the rule rather than the exception. 



On the other hand, the use of self-fertile varieties as fertilizers 

 for the self-sterile sorts generally was attended with good results, 

 as may be seen by examining the records of such varieties as 

 Catawba, Worden and ISTiagara and Station 125. When certain 

 varieties which are not strongly self -fertile, were tried as fertilizers 

 for self-sterile sorts they generally succeeded in about the same 

 degree as they commonly do in fertilizing themselves. This point 

 is illustrated in the record of the tests with Eaton, ISTectar and 

 Vergennes. 



IS FAILURE IN SETTING FRUIT USUALLY DUE TO IMPERFECT PISTILS 

 OR TO IMPERFECT OR IMPOTENT POLLEN ? 



It is instructive to study the results of these investigations with 

 reference to their bearing upon the question whether the failure 

 to set fruit which has been observed among the self -sterile and the 

 imperfectly self-fertile varieties may generally be attributed to 

 weakness of the pistils or to imperfect or impotent pollen. In 



