■64 MASSACHUSETTS HORTICULTURAL SOCIETY. 



maturity, were those treated witli tlie above eonibiuatiou, tiuil as 

 other stations report similarly favorable results we feel warranted 

 in urging its general use. The sulphate of copper solution should 

 be applied to the branches before the leaves unfold, to destro}' any 

 germs or spores of the leaf blight or plum wart that may be present, 

 and then from the time the blossoms fall until the first of July the 

 combined mixture should be used. After this, either the Bor- 

 deaux mixture or the ammouiacal carbonate of copper alone may 

 be used. The latter will probabh' be the most satisfactory^ as it 

 does not disfigure the fruit. 



The plum wart we feel sure was largely prevented from develop- 

 ing liy this treatment, but the few warts that may secure a hold on 

 the branches can certainly be destroyed by the kerosene paste.* 

 This" should be applied with a brush in order to keep it from the 

 new bark, which it would destroy. 



The Grape. — In the college vineyard the past season the l)ene- 

 fits derived from the use of the Bordeaux mixture — and we have 

 like reports from others wherever used — Avere such that there seems 

 to be but little doubt that this is a reliable remedy for about all of 

 the fungous diseases of the vine. The great objection to its use is 

 that it remains upon the fruit when ripe if applied late in the season. 

 But after the work of the rose bug has ceased I see no reason why 

 the ammouiacal carbonate of copper may not be used with equal 

 etfect. 



In our experiments the destruction of the rose-bug by the use of 

 Paris green was not fully demonstrated, but other reports are more 

 positive ; and from the light we did gain by our work we believe 

 that, liy the use of a more concentrated solution, which it has been 

 proved we can apply with the Bordeaux mixture, this troulilesome 

 pest must succumb to this treatment. 



The sulphate of copper solution was applied to the vines before 

 the leaves unfolded and the Bordeaux mixture at intervals of from 

 one to three weeks up to July 28th. Paris green was used only 

 from the time the rose bugs made their appearance to about the 

 first of July. 



The Strawberkv. — During the spring and early sunnner, straw-- 

 berry leaves in some localities are seriously injured by a small 

 brown beetle that feeds upon them. This little beetle is the crown 

 borer, the larvtt of which are at work during the summer eating 



*See formulae, page 65. 



