70 Maine; agricultural experiment station. 1906. 



of Bordeaux mixture. In other words, trees not sprayed gave 

 on three successive years 4.1, .9, and 38.2 per cent of the fruit 

 free from scab ; while the same years an equal number of trees 

 sprayed with eau celeste (copper sulphate, carbonate of soda 

 and ammonia) gave 57.8, 30.1 and 72.8 per cent respectively. 

 The third year Bordeaux mixture was used and gave still better 

 results — 79.9 per cent of the fruit being free from scab. 



From these, and similar results obtained all over the country, 

 it is evident that spraying lias ceased to be an experiment as a 

 means of controlling certain orchard diseases. The results 

 above cited have been repeatedly confirmed both at this Station 

 and elsewhere. Reference is made to the subject at this time 

 only to emphasize the importance of using precautionary 

 measures. Even though there be no crop of fruit, the increased 

 vigor of the trees as a result of clean healthy foliage, will far 

 more than repay the cost of spraying. This spraying with 

 Bordeaux mixture should be done first before the buds burst, 

 and again immediately after the blossoms fall, if but two treat- 

 ments are to be given. If the season is very wet, however, at 

 least four treatments at intervals of two or three weeks are found 

 to be advantageous. 



pink rot. 



In 1902 a comparatively new fungous disease made its appear- 

 ance to a very destructive extent in western New York. This 

 disease, known as 'Tink Rot," because of its pinkish, mildew- 

 like appearance, had long been known to botanists but only, or 

 mainly, as a saprophyte, or fungus which grows on dead or 

 decaying matter. It did not come under the writer's personal 

 observation until the present season ; although said to have been 

 destructive to stored apples in Maine in 1902. 



The appearance of this trouble is well shown in figure 9, 

 from a photograph of fameuse apples grown at the Station the 

 past year. The best description of the trouble, with a full 

 account of its life history, is given by Eustace in Bulletin 227 

 of the New York Agricultural Experiment Station. 



The disease attacks the fruit on the scab spots, where it 

 appears like a pinkish mildew. Later in the season, the spots 

 become brown, sunken and rotten. If badly attacked the whole 

 fruit soon decays. Because of its appearance only on the scab 

 spots, many have regarded it as simply another form of the 



