RECENT ADVANCEMENT IN IIOIITICIILTUKE. 135 



Aguiu, wiieu sprayed trees arc compared with uusprayed 

 trees right iu the same orchard, wliere all experienced the 

 same cold weather, tiower clusters are mainly killed on trees 

 that are not sprayed, and apples that are sprayed escape the 

 cold and subsequently nmture, and because the "apple scab'' 

 also is kept out of the trees. This is still better evidence that 

 it is not the cold weather, but the ''apple scab" that killed the 

 Howers where spraying was not done. 



In our experiment station orchard during the present 

 season, a full crop of Jonathan, Ben Davis, Gano, Ingram, 

 Winesap, and other leading commercial varieties was secured 

 on trees which went through the same cold weather as was 

 experienced by adjacent unsprayed trees whose bloosoms or 

 young fruit was mostly killed before the warm weather of 

 spring came on. 



Some of the orchardists said that it was not worth while 

 to spray, because the cold weather had killed all of the blos- 

 soms; and he had nothing to spray for. An outlaying experi- 

 ment was performed on an adjacent orchard. This orchard 

 embraces some 200 acres of Jonathan, Ben Davis, Gano, and 

 other commercial sorts. Believing from the previous year's 

 observations that the loss of the flow^ers was due to "scab" 

 rather than to cold weather, a single acre in this orchard 

 was sprayed carefully by the experiment station. This one 

 acre had more good marketable fruit on it during this autumn 

 than has all of, the rest of the 200 acres combined. While 

 the cold weather was apparently killing the blossoms on 

 unsprayc^d trees (which blossoms, however, were actually 

 being killed by "apple scab"), fruit was setting nicely on 

 sprayed trees where "apple scab" was kept down, and a good 

 crop was the result. 



It should be further emphasized that very much of the 

 alleged killing of apple blossoms in cold weather, rainy 

 springs, and frosty weather is more largely due to "apple 

 scab" in most localities than to cold wet weather. 



In order to impress this point better upon the mind, it 



