13 



Treatment for the Pear. 



1. When the fruit has set, i. e., the petals have fallen, 

 spray with the Bordeaux mixture and Paris green. 



2. Repeat the spraying in eight or ten days. 



0. Spray again with same mixture in two weeks. 



Treatment for the Plum. 



1. As soon as the petals have fallen, use the Bordeaux 

 mixture and Paris green. 



2. Spray again in eight or ten days. 



3. Spray again in two weeks. 



Treatment for the Grape. 



1. Just before the blossoms open, use the Bordeaux mix- 

 ture aixl Palis green for the ' rose ]>eetle.' 



2. Use the same mixture eight or ten days later, or as 

 soon as the fruit has set. 



Treatment for the Strairherry. 



1. Apply the Bordeaux mixture and Paris green as soon 

 as the leaves bei>in to 2,10 w vi^orouslv. 



2. Use the Bordeaux mixture and Paris green just before 

 the first blossoms open. 



3. After the fruit has l)cen gathered, if the bed is to be 

 continued, make one application of the above mixture. The 

 Paris green is included to destro}' the ' croivn borer,' which 

 is injurious in some sections." 



Injur y to the FolaKje. 



* " Another practical question of no small moment in this 

 use of the arsenites refers to injury to the foliage of the 

 trees treated. In an elaborate series of experiments the 

 past season we desired to learn the effect on different trees 

 of the different arsenites, and whether the date of treatment 

 and atmospheric condition had any influence. ... I think 

 we are warranted in the folh^wing conclusions: First, Lon- 

 don purple is more injurious to the foliage than is Paris 



* Prof A. J. Cook, in Bulletin No. ')i, Aiiijust, 1889, of the Agricultural College 

 of Michigan Experitncnt Station. 



