ISTew York Agkicultural Experiment Station. 191 



SCAB. 



(Venturia inaequalis (Cke.) Adeli. Syn. Fusicladium dendriticum 



(Wallr.) Fckl.) 



This arch enemy of the apple has done very little damage. It 

 has been reported as occuri'ing to a slight extent in all the counties 

 in the district except Albany, Ulster and Putnam, but only one 

 correspondent (Old Chatham, Columbia Co.) reports it trouble- 

 some. On June 20 we sought in vain for a single specimen of 

 scab in an 80-acre apple orchard at Poughkeepsie. In 1898 this 

 orchard suffered severely from scab. At "VVashingtonville scab 

 spots were common on the twigs of the Lady apple, which is 

 a variety very susceptible to this form of attack. 



LEAF SPOT. 



(Phyllostida spp.) 



"What a correspondent thought to be leaf spot occurred injuri- 

 ously at Schodack Landing, Rensselaer Co. In some orchards 

 25 per ct. of the foliage was affected. LTpon investigation it was 

 found that the so called leaf spot was the work of an insect,® the 

 resplendent shield-bearer (Aspidisca splendoriferella). 



The true fungus leaf spot has been much less common than 

 scab, but traces of it have occurred at various points in the district. 

 ]^o attempt was made to distinguish between the two species. 



TWIG BLIGHT. 



{Bacillus amylovorus (Burr.) DeToni.) 



Rare. A few affected twigs were observed in Albany Co.; and 

 three correspondents, one each in Orange, Ulster and Rensselaer 

 counties, report its occurrence in small quantity. 



6 On the authority of !Mr. F. A. Sirrine, who examined some of the affected 

 leaves. 



