Combinations of Insecticides and Fungicides. 105 



diseases. In October, Xeale published 1 an account of work 

 done in Delaware vineyards. The Bordeaux mixture was used 

 with an estimated saving of $65.25 per acre. Stained fruit 

 was cleaned by placing it in wire baskets which were dipped 

 in diluted vinegar. The fruit was allowed to remain here a 

 few moments, and then dried on wire frames. 



An important article written by Weed appeared the following 

 month. 2 He conceived the idea of applying insecticides and 

 fungicides together, and the statement is made that "a con- 

 siderable number of experiments with this end in view have 

 been carried on during the season with very satisfactoiy 

 results." One of these experiments was designed to control 

 the brown rot of stone fruits. A plum orchard was treated 

 for this disease as follows : " We sprayed the trees early in 

 April (April 16), before the leaves came out, with a simple 

 solution of copper sulphate; and twice during May (loth and 

 25th), the first with London purple alone, the second with a 

 combination of London purple and the Bordeaux mixture, 

 which treatment was repeated June 1. No further applica- 

 tions were made, except to one tree, which was sprayed with 

 the Bordeaux mixture July 16." Fairly satisfactory results 

 were obtained from the applications. 



The Bordeaux mixture was also applied to apple trees for the 

 prevention of the scab, but the results were decidedly against 

 the use of this fungicide for the treatment of the disease, a 

 result which, it is scarcely necessary to say, has not been 

 verified in late years. The black rot of the grape, and the 

 quince-leaf spot, were more successfully controlled by the same 

 remedy. 



Maynard tried a combination of Paris green and a solution of 

 copper sulphate upon potatoes. The growth of foliage was 

 checked, but the blight was not so serious upon the treated 

 as upon the untreated portions. 3 



At the time that Gillette was experimenting with mixtures 

 of the arsenites and lime (see page 76), he also used the Bor- 

 deaux mixture in place of pure lime, with such success that 



1 Del. Affric. Exp. Sta. 1SS9, Bull. 6. 



2 Ohio Agric. Escp. Sta. second series, Vol. ii. 1SS9, BulL 7, 186. See also 

 Agricultural Science, Vol. iii. 18S9, 263. 



s Jfass. Hatch Agric. Exp. Sta. 1890, Jan. Bull. 7, 12. 



