SPRAYING 245 



gallons. The mixture is then strained through a 

 20-mesh sieve and applied with a spray pump. 



** If this new fungicide proves to have the quali- 

 ties claimed for it, it will certainly be a great thing 

 for peaches and may be useful for other fruits. 

 However, we warn fruit growers against using it 

 extensively until they have thoroughly tested it 

 on a small scale. In the past, heavy losses have 

 sometimes resulted from the use of new spray mix- 

 tures. It is best to go slowly with these new 

 things. We understand that Mr. Scott made fur- 

 ther experiments in 1908, but the results have not 

 yet been published. 



" Prof. A. B. Cordley of the Oregon station also 

 has a lime-sulphur mixture, which he claims can 

 be safely used on the foliage of fruit trees. He 

 calls it the stock solution method of preparing lime- 

 sulphur mixture. He makes a stock solution of 

 lime and sulphur, which gives a hydrometer test 

 of 1.27. Each gallon contains 2.38 pounds of sul- 

 phur. Diluted with 15 parts of water this did not 

 injure the foliage of apple, pear, plum, grape, 

 potato, and celery, but did injure the peach. He 

 states that apple trees sprayed three times with 

 this mixture gave 79.3 per cent of scab-free fruit, 

 while unsprayed trees gave only 19.9 per cent, and 

 trees sprayed with bordeaux 49.1 per cent of scab- 

 free fruit. Moreover, the fruit sprayed with lime- 

 sulphur was free from spray injury, while 39.1 per 

 cent of the fruits receiving bordeaux showed spray 

 injury. 



" While we do not question the veracity of Profes- 

 sor Cordley, we cannot believe that the lime-sulphur 

 mixture, in any formi, is really more efficient than 

 bordeaux for the control of apple scab. A mis- 

 take has been made somehow. Our advice to 



