255 



budded stocks showed little superiority in regard to leaf-blight over 

 the budded Myrobolaii and evidently no considerable degree of immu- 

 nity was afforded by the stock to the scion. But a comparison of the 

 two tables brings out the fact that the Purple Egg "buds" made mark- 

 edly the best growth upon Mariaima stocks. These "buds" averaged 

 more than one-eighth of an inch greater in diameter and were on an 

 average 10 inches higher. The other less rapidly growing stocks did 

 not show such a marked difference, and too much reliance ought not 

 to be placed on data gathered from so small a number of stocks. Cer- 

 tain it is, however, that the Marianna proved superior in this single 

 experiment. 



TABLE 10. Showing condition of budded Marianna stocks, treated and untreated, as re- 

 gards foliage and measurements. 



* By another mistake in budding, those stocks which should have received Italian Prune buds were 

 budded with Purple Egg buds. 



As regards the effects of the treatments, the only fairly deducible 

 conclusion is that the Bordeaux mixture and ainmoniacnl solution pre- 

 vented the disease to a notable degree, sufficient, it is believed, to 

 warrant further extended trial in nursery practice. Although not 

 evident from the table, the ammouiacal solution is in reality inferior to 

 Bordeaux, as it injures the foliage of the treated "buds." On this 

 account it can not be recommended for the treatment of plum stocks. 

 Plates xxvin and xxix show the treated and untreated "buds" as 

 they appeared in the experiments. 



