30 



advanced in blossom at the time of spraying, had nearly all the fruit 

 destroyed. 



What seems remarkable to me is that a numl^ier of rows treated 

 with only the sulphate of iron, should be so much superior and free 

 from mildew and rot to those in the same location and not treated. 

 Although my beginnings were disastrous, I think I have learned 

 something and am full of enthusiasm to continue the work. Possi- 

 bly in this immediate section, where, the grape is not so liable to 

 disease, a lesser strength of the Bordeaux mixture would be advis- 

 able, but think if the mixture is properly made it will not injure the 

 foliage a particle. 



My sprayer is intended to stir the liquid automatically, but I am 

 afraid it does not work to perfection. It seems to me that if we can 

 keep the foliage and fruit healthy until July that there would not be 

 much need of treatment after that date.* 



Altogether my crop of grapes was good, but the prices low. Sold 

 some tons as low as 2c. per pound. They were Wordens and were 

 sent to market just at the time of the " grape scare" in New York 

 city. The later parts of the crop, mostly Concords, sold for 5c. per 

 pound, or more." 



REPORT OF EXPERIMENTS AT FOREST ORCHARD, 



NORTHBORO, MASS. 



At this place 500 peach, 500 plum, 100 pear, 300 small and 200 

 large apple trees, about 2000 grapevines, and several hundred black- 

 cap raspberries were treated. 



The application oi concentrated solutions of sulphate of copper 

 was made to one-half, that of sulphate of iron to the other half of 

 each plot, before the leaves unfolded, and all subsequent spraying 

 was done at intervals of about two weeks, varying somewhat with 

 the weather. 



Peach. All the trees blossomed and promised a large crop of 

 fruit, but the frost of May 19th destroyed all but that of the early, 

 white-fleshed varieties, like the Amsden, Waterloo, etc. 



* This will depend very much upon the weather. The past season during the extremely 

 warm, moist weather of September, the powdery mihU.-w came upon the foliage of the 

 unsprayed vines in tlie college vineyard in such quantities that, had it been in August, it 

 would have ruined the crop. Taking the conditions one year with another it is very 

 doubtful if we can hope for freedom from this disease and the black rot with less than 

 five applications after the leaves have unfolded, three of the Bordeaux mixture and two 

 of the animoniacal carbonate of copper, or some wholly soluble fungicide. 



