144 STATE AGRICULTURAL COLLEGE BULLETINS. 



green will save the fruit from the curculio and rot, and will maintain the 

 foliage in a healthy condition until autumn. 



While the spraying may not save every plum from rot and curculio, the 

 number lost, in average seasons, will be of advantage in aiding the proper 

 thinning of the fruit. Particularly, if the season is a wet one, an addi- 

 tional spraying of the combined mixture about two weeks after the fruit 

 has set will be of advantage. 



POME FKUITS. 



The most injurious insects of the apple and pear, for which spraying is 

 of value, are the codlin moth, tent caterpillar, canker worm, and curculio. 

 The scab of the apple and pear, and the leaf blight of the pear and quince 

 are the most destructive fungi for which fungicides are used, and all of 

 them can be to a large degree controlled. Even if the three applications, 

 as recommended, are not given, two can hardly fail to be of value, and 

 with most varieties will pay in average seasons, if the trees are bearing 

 even a light crop of fruit. 



THE grApe, , 



In nearly all of the grape-growing sections, the injury either to foliage, 

 fruit, or both, from the downy or powdery mildews, black rot, and anthrac- 

 nose, is yearly on the increase and of all these diseases the use of the cop- 

 per mixtures will prevent the spread. 



During the past eight years many experiments with dozens of mixtures 

 have been made, with the hope of ascertaining which was most effectual, 

 and in nearly every case the best results were obtained with Bordeaux 

 mixture, which has also the advantage of being inexpensive and easily pre- 

 X>ared and applied. 



SMALL FRUITg. 



r' 



The strawberry is frequently troubled by leaf blight and many other- 

 wise valuable varieties are nearly ruined by it. Bordeaux mixture applied 

 early in the spring and again in a diluted form just as the blossoms are 

 falling will hold it in check until after the crop is gathered, when another 

 application will be desirable if the plantation is to be kept for another 

 year. 



The raspberry anthracnose soon becomes deeply seated in the canes, and 

 no fungicide can reach it. The spread of the disease can be retarded, 

 however, if the old canes are sprayed just before the leaves start. It will 

 also be well to cut out and burn all canes that are badly infected. The 

 new canes should be sprayed when a half foot high, and should receive a 

 second application at the exjiiration of two or three weeks. 



The currant and gooseberry often lose their foliage from the workings 

 of the currant worm and if this is kept in check the fungi may destroy 

 them. 



As soon as the leaves have formed, the combined mixture should be 

 applied and can be repeated to advantage in two or three weeks. Later 

 on, especially for European varieties of gooseberry, an occasional applica- 

 tion of liver of sulphur will keep the foliage healthy. 



The above are among the most injurious of the fungi and insects that 



