31 



The first application of the Bordeaux mixture, made May 13th, 

 did not injure the foliage materially, but that of the 2oth was so 

 destructive that no further application was made until July 28th, 

 when the fruit began to decay and the ammoniacal carbonate of cop- 

 per was used at the rate of one-half pouud to fifty gallons of water. 

 This solution did not injure the foliage and checked the rotting of the 

 fruit, although not wholly preventing it. 



Phtm. These trees bloomed very full, but the fruit was destroyed 

 by the frost, and only one application of the Bordeaux mixture was 

 made after Ma}' 19th. Very few black warts appeared and these 

 were effectually destroyed by painting with the kerosene paste.* 



The leaf blight attacked the foliage the latter part of August and 

 all the leaves fell, leaving the trees bare for the rest of the season. 

 This caused serious injury to the trees, and probabl}' might have been 

 prevented had they been sprayed once in July and again in early 

 August. (See experiment on the college grounds, page 16, Plates 



VI, VII. 



Apple. The first application of the Bordeaux mixture was made 

 just before the blossoms opened, and Paris green, one pound to 200 

 gallons of the mixture, was added to destroy the tent caterpillar and 

 bud moth which were abundant. Another application of the same 

 was made soon after the petals had fallen, and a third June 20th. 



The results of this work were the destruction of most of the tent 

 caterpillars ; and the fruit on the sprayed trees was more free from 

 the larvae of the codling moth than that on unsprayed" trees, although 

 that upon both was less wormy than for many years previous. 



The season was so unfavorable for the development of the apple 

 scab that little diflference could be detected between the amount upon 

 the leaf or fruit of eitlier those trees sprayed or unsprayed. 



Blackcap) Raspberries. The anthracnose or spot fungus of the 

 raspberry nearly ruined a plantaiion of an acre or more of blackcaps 

 last season, and about 200 plants were selected for treatment this 

 season. This disease first appears as small brownish-purple spots 

 on both old and new canes, generally near the ground. As the 

 fungus increases in growth, the center of the spot becomes greyish 

 brown, and if in large numbers on the canes they grow very weakly 

 or die. 



The sulphate of copper was applied the last of April, and later, two 



* Ordinary kerosene oil mixed to a paste witli French yellow, or any otlier dry pigment. 

 Crude petreleum would do equally well, if it is thick enough so as not to spread over the 

 branch veiy much when applied. 



