1910.] Injury to Foliage by Bordeaux Mixture. 107 



varieties were Tower of Glamis, Lucombe's Seedling, and 

 Ecklinville. Trees of the three following varieties, sprayed at 

 the same time, showed no injury — Beauty of Bath, Welling- 

 ton,, Newton Wonder. Last season the grower sent me 

 the following notes: "The two sorts of apples which 

 happened to be cropping with me were sprayed with Bor- 

 deaux mixture (made on the 4-4-50 formula) once before 

 blossoming, and once afterwards at a time when the apples 

 had formed. No damage was done to the leaf, but, as 

 happened in the previous season, the apples on Lucombe's 

 Seedling and Tower of Glamis were rather badly damaged, 

 the fruit being small and very "russeted." I grew a large 

 crop of Williams' Pears; here the leaves and the fruit were 

 heavily sprayed with Bordeaux mixture, — in fact, we 

 ' washed ' the trees ; no damage was done at all, and I have 

 never grown previously such clean good fruit." In another 

 district (Paddock Wood) it was noticeable last season that 

 rather late spraying, i.e., after the apples were formed, 

 resulted in a large proportion of the fruit on the three 

 following varieties becoming " rusty" or "russeted," — Cox's 

 Orange Pippin (badly affected), Bismarck, Beauty of Bath; 

 while the following four varieties, similarly sprayed with 

 Bordeaux mixture, showed no injury, — Lord Derby, 

 Warner's King, Souring, Ecklinville. With respect to these 

 latter varieties, the trees had produced in previous seasons 

 very "scabby" crops, but last season, as the result of spray- 

 ing with Bordeaux mixture, they bore a practically clean crop, 

 and the spray did no damage to the fruit or foliage. Here, 

 then, is a case, — and there are, no doubt, scores of similar 

 ones, where it would pay the grower to distinguish between 

 different varieties of apples in spraying. 



In another case last season, a particular variety stood out 

 conspicuously as resistant to "injury," In this instance it 

 is possible that some of the Bordeaux mixture used was made 

 with partly air-slaked lime, and on this account the mixture 

 may have been specially injurious. Two sprayings were given 

 to a considerable acreage of trees, and resulted in serious 

 damage being done to practically all the trees of Lord Derby 

 (on which the fruit was severely "russeted," and the leaves 



turned yellow), and of Cox's Orange Pippin (on which most 



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