EXPERIMENT STATION BULLETINS. 299 



or other fungous diseases have been troublesome. As a rule, one appli- 

 cation after blossoming will hold these in check, but as the foliage is 

 quite tender, it will be well to reduce the strength of the mixture from 

 one-third to one-half. 



THE SPRAYING OF PLUM AND CHERRY ORCHARDS. 



After the spraying with Bordeaux mixture, which should be given 

 previous to the blossoming, it will generally be well to make two appli- 

 cations at intervals of ten days to two weeks, beginning as soon as the 

 fruit has set and the husks have disappeared. When the varieties are 

 subject to leaf blight, or rot, it will pay to make an application of weak 

 Bordeaux mixture provided it can be done without spotting the fruit. 

 Unless it can be applied at least two or three weeks before the fruit is 

 to be gathered, it will be safer to substitute copper sulphate, or soda 

 Bordeaux, for the regular Bordeaux mixture. 



THE SPRAYING OF VINEYARDS. 



For the fungous diseases of grapes it will be well to spray the vines 

 very thort)ughly with copper sulphate solution during the month of 

 April, or early in May, and then apply Bordeaux mixture as soon as 

 the fruit has set. If the weather is favorable for the development of 

 black rot or mildew, the application should be repeated every ten days 

 or two weeks as long as danger from either of these diseases threatens. 

 If the rose chafer is troublesome, which is especially likely to occur 

 when the vineyard is upon sandy soil and there is land in the vicinity 

 that is uncultivated, it will be well to apply arsenate of lead at the rate 

 of five pounds in fifty gallons. This can be used in Bordeaux mixture 

 if it is desirable to spray with a fungicide at that time. The same 

 treatment will also prove very effectual against the flea beetle, which 

 appears as the buds are swelling. At that time it can be used in con- 

 nection with the spray of copper sulphate solution. 



THE BUSH FRUITS. 



The raspberries, blackberries, currants and gooseberries, which are 

 commonly spoken of as bush fruits, are also benefited by spraying. Al- 

 though the two first named fruits are not very much injured by insects 

 they frequently suffer from the various cane diseases and an application 

 of the Bordeaux mixture, when the new shoots are about eighteen inches 

 high, will greatly reduce the injury from these troubles. A second 

 application at the end of two weeks is also helpful. Care should be 

 taken to spray the young growths thoroughly, but little will be gained 

 by treating the old canes at that time. After the fruit has been gathered 

 and the old canes removed, another application of Bordeaux mixture 

 can often be made to advantage. 



The currants and gooseberries will require early and frequent treat- 

 ment. As soon as the leaves appear upon the gooseberries, careful ^ 

 watch should be kept for the currant worms, which can then be found 

 upon the inside leaves on the lower portion of the plant. It will be well 

 to apply Paris green in Bordeaux mixture and repeat the application 

 upon both currants and gooseberries in about ten days or two weeks, 



