244 MAKING HORTICULTURE PAY 



able for its spread, another application, which would 

 be the fifth, if the above recommendations are fol- 

 lowed, can be often made with profit. For this 

 spraying it will be well to use no more lime than 

 of copper sulphate, and a somewhat smaller quan- 

 tity might be employed, thus lessening the danger 

 of spotting the fruit. The same practice may also 

 be followed when bordeaux is used upon winter 

 varieties of apples and pears, or upon late varieties 

 of plums after the first of August." 



LATEST WORD ON SPRAYING 



" Investigators of plant diseases have recently 

 advanced important new ideas on spraying fruit 

 trees," writes Prof. F. C. Stewart of the New York 

 experiment station. " In circular No. i, of the 

 bureau of plant industry, W. M. Scott announces 

 that he has devised a cheap and easily prepared 

 lime-sulphur mixture which can be used on peaches 

 and other fruit trees during the growing season 

 without injury to foliage or fruit. He calls it the 

 self-boiled lime-sulphur mixture. His experiments 

 made in Missouri show it to be highly efficient in 

 the control of peach rot and scab. The best pro- 

 portions of lime and sulphur have not been deter- 

 mined definitely. 



" The mixture that gave the most promising re- 

 sults was composed of lo pounds of sulphur, 15 

 pounds of fresh stone lime, and 50 gallons of water. 

 The lime is slaked with a few gallons of hot water. 

 The sulphur is added immediately and thoroughly 

 stirred into the boiling lime. The only heat used 

 is that generated by the slaking of the lime. After 

 boiling ceases, enough water is added to make 50 



