IV. PRELIMINARY NOTES ON THE GRAPE 

 VINE FLEA BEETLE.* 



V. H. Lowe. 



SUMMAKY. 



The grape vine flea beetle has been unusually abundant during 

 the past season. The adults feed on the swelling buds, and to a cer- 

 tain extent upon the leaves. The principal injury to the leaves is by 

 the larvffi. Experiments with this insect are not yet completed. The 

 adults have been checked, however, with Paris green, at the rate of 

 1 pound to 50 gallons of water, with the addition of enough 

 freshly slaked lime to make the mixture milky in appearance. 

 This mixture should be applied to the vines in a fine spray as soon 

 as the adults appear. Later applications against the larvae may be 

 made with Paris green, 1 pound to 150 gallons of lime water. 



INTKODUCTIOK 



This insect was unusually abundant in the grape growing sec- 

 tions of the State last year. In the Keuka Lake region it was 

 estimated by an extensive shipper that at least 10 per cent of the 

 crop was destroyed last season. Some of the large vineyards in 

 the vicinity of Bluff Point were entirely stripped of their foliage, 

 with the result that no grapes were produced and the vines were 

 much weakened. 



As a result of this unusual injury numerous requests have 

 come to the Station asking for information concerning the life 

 history of the insect, and what should be done to prevent serious 

 injury another year. Although the investigations and experi- 

 ments in this direction are not yet completed, it seems advisable 



* Reprint from Bulletin No. 150. 



