2 pounds to 50 gallons of self-boiled lime-sulphur mixture. Since this 

 application is rather early for scab, and since serious outbreaks of 

 brown-rot do not usually occur at this time, the self-boiled mixture 

 may be omitted in many cases with reasonable safety. But during 

 warm, rainy springs, especially in the South, the lime-sulphur mixture 

 will doubtless be necessary in this application. In case the self-boiled 

 lime-sulphur mixture is not used there should be added to each 50 

 gallons of water the milk of lime made from slaking 2 or 3 pounds of 

 good stone lime, in order to counteract any caustic action of the arse- 

 nate of lead. 



Second application. — Two or three weeks later, or about one month 

 after the falling of the petals, spray with the 8-8-50 self-boiled lime- 

 sulphur mixture and 2 pounds of arsenate of lead. 



Third application. — About one month before the fruit ripens spray 

 with the 8-8-50 self-boiled lime-sulphur mixture, omitting the poison. 



For earlier maturing varieties of peaches, such as Waddell, Car- 

 man, and Hilev, the first two treatments outlined above will usually 

 be sufficient, but in very wet seasons badly rotting varieties would 

 probabty require three treatments. Late varieties, such as Smock and 

 Salway, having a longer season, would not be thoroughly protected by 

 three applications, but on account of the expense there is hesitation 

 in recommending a fourth spraying. In view of the results obtained 

 on midseasoh varieties, it seems likely that three treatments will ordi- 

 narily be sufficient for the late varieties. 



APPLICATION OF THE SPRAY MIXTURE. 



During the operation of spraying, the mixture should be kept well 

 agitated. Owing to the tendency of the self-boiled lime-sulphur mix- 

 ture and the arsenate of lead to settle readily, this point can not be 

 too strongly emphasized. If the spraying outh't is not equipped with 

 a good agitator, the spray will not be eventy distributed, with the 

 result that some of the trees will be oversprayed while others will 

 receive an insufficient application. The early applications of spray 

 should be made rather heavy and very thoroughly to insure the de- 

 struction of the curculio and protection against scab. The last spray- 

 ing, a month before ripening time of the fruit, should be made with 

 fine nozzles, the object being to give the fruit a uniform coating of a 

 mistlike spray. Heav} T . drenching of the trees at this time should 

 be avoided, to guard as much as possible against the staining of the 

 fruit at picking time. 



Approved: 



James Wilson, 



Secretary of Agriculture. 



Washington, D. C, February £5, 1910. 



[Cir. U0] 



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