140 MINNESOTA STATE HORTICULTURAL SOCIETY. 



ject to it than the reds. Of the red varieties, the Shaffer and its seed- 

 ling's are the worst. 



This season at the university farm we noticed very little damag^e 

 from anthracnose on the black raspberries, no doubt due to the 

 thoroug-h spraying that we did last season (1894). 



When spraying- is undertaken, it must be done with the under- 

 standing that it must be done thoroughly and at the proper time. 

 No doubt the best routine to follow is as given by Prof. Samuel B. 

 Green, in bulletin No. 39 of the Minnesota Experiment Station, viz: 



"In the spring, before the canes start, spray them with a solution 

 of sulphate of copper (blue vitriol) made by dissolving- one pound 

 of it in fifteen galls of water. Later, spray the new canes with Bor- 

 deaux mixture, probably about three times, at intervals of about 

 two weeks, commencing- as soon as the new canes are one foot high. 

 Care should be taken not to get the Bordeaux mixture on the leaves 

 of the fruit-bearing- canes, as they are quite liable to be burned 

 by it." 



Prof. S. T. Maynard of the Mass. Exp. Station reports, "We find 

 that varieties very much subject to its attack have become almost 

 free from injury by spraying with the copper and Bordeaux mix- 

 tures. Our routine of spraying is this : 



"First. Before the leaves unfold cover the canes with the Bor- 

 deaux mixture, 4 lbs. lime, 4 lbs. copper sulphate and 25 gallons 

 water. 



" Second. Just before the fruit reaches size to be disfigured, would 

 spray again with same, but confining the spray to the lower leaves 

 and canes. 



" Third. After the fruit is gathered, spray once more. 



" With this treatment, there will be copper on the canes and leaves 

 all summer, and neither anthracnose nor septoria will be injurious. 

 With us, septoria does more harm than anthracnose." 



Pres. Underwood: There were some questions asked in re- 

 gard to Mr. Mackintosh's paper on "Anthracnose," and if 

 there are any here who wish to discuss that subject or ask any- 

 further questions they can do so. 



Mr. Pond: Is it the disease that is sometimes called the 

 "curly leaf" ? 



Mr. Mackintosh: No, it is not the same. "Curly leaf" at- 

 tacks the leaves, while this troubles the stem. 



Mr. Pond: Does "curly leaf" attack the roots? 



Mr. Mackintosh: I am not acquainted with that. 



Mr. G. J. Kellogg: When is the most successful time to 

 fight it by spraying? 



Mr. Mackintosh: Early in the season, covering the old canes 

 before the new canes have started. 



Mr. Kellogg: You say early; before the leaves start or 

 after? 



