76 THE CONNECTICUT POMOLOGICAL SOCIETY 



Scale 071 Grape 



A portion of a scale-infested grape-vine was sent to the 

 Station from Bristol, in June. Scale insects are less com- 

 mon on grape-vines in Connecticut than on fruit trees, but 

 this vine was seriously infested with a large hemispherical 

 brown scale, belonging to the genus Lecanium. The scale 

 proved to be L. armeniacum, Craw., a species commonly 

 found upon rosaceous fruit trees in the western states, and 

 which has spread rather rapidly in the east during the past 

 few years. The several species comprising the genus 

 Leca?iium are not provided with armor, and are called soft 

 scales. They are extremely susceptible to "contact insecti- 

 cides " and can, therefore, be easily controlled. 



Kerosene and the San Jose Scale 



Last season the San Jose scale was reported from Burn- 

 side, Nichols, Cheshire, Rowayton and Ivoryton. New 

 centers of infection have also been discovered in New 

 Haven, Hartford and Bridgeport. Up to this time it has 

 been found in twenty towns of the state, and some of these 

 contain several infested localities. 



The scale spreads less rapidly at the north than many 

 believed it would, but it is still a much dreaded pest, and 

 orchardists and fruit growers should always be on the look- 

 out lest it be introduced into their domains. 



Spraying trees with clear kerosene has been given a 

 trial in Connecticut, March i, several seriously infested 

 Japan plum trees in New Haven were sprayed with kero- 

 sene. Sixty da3's afterwards no living scales could be 

 found.* 



"The kerosene was purchased in the market for illumi- 

 nating purposes, and was supposed to be of good quality. 

 It was applied by means of a ' Success ' bucket-pump, 

 through a Vermorel nozzle, and the spraying was done on 

 a bright day, with plenty of air stirring, so that evaporation 

 would be rapid. Where the kerosene was applied with 

 care, little or no injury resulted. One tree, literally covered 

 with scales from top to bottom, was drenched with kero- 



* Connecticut Experimental Station Report for 1S98, p. 272. 



