74 MAINE AGRICULTUR,\L EXPE;RIMI;nT STATION. I91I. 



pends largely upon the lime. Some grades of lime respond 

 quickly and take a large quantity of water, while others heat up 

 slowly and are easily 'drowned' if too much water is added at 

 once. Hot water may be used to good advantage in preparing 

 the mixture with sluggish lime, but with quick-acting lime hot 

 water is not necessary and is more likely to bring too much of 

 the sulphur into solution. If desired the mixture may be kept 

 for a week or more without deterioration, but should be thor- 

 oughly stirred before using." 



In applying the self-boiled mixture the spray pump should be 

 equipped with a good agitator, as the mixture settles to the bot- 

 tom of the tank. In order to be evenly applied it must be well 

 agitated. 



It is to be noted that this mixture has been found less effect- 

 ive for apple scab than the boiled preparation. 



Home Boiled Concentrated Lime-Sulphur. 



Sulphur 1 10 pounds. 



Lime, best grade 55 pounds. 



Water sufficient to make 60 gallons. 

 "Slake the lime, mix the sulphur into a thin paste with a lit- 

 tle w^ater, add it to the lime, add sufficient water to make 60 gal- 

 lons, bring to a boil and boil vigorously for 30 to 45 minutes. 

 The sediment is then allowed to settle, after which the clear 

 dark amber-colored liquid is drawn off and may be stored in 

 casks for future use."* 



In making this solution a large iron kettle or cooker of some 

 sort is necessary. A stock feed cooker of large capacit}^ will 

 answer. Fig. 45 shows a satisfactory form which can be had 

 of ]\Iontgomery Ward & Co., Chicago, 111. ; The Wagner Manu- 

 facturing Co., Sydney, Ohio ; Farmers' Supply Co., Philadel- 

 phia, Pa. ; or R. B. Dunning & Co., Bangor, Maine. The solu- 

 tion can also be made with the use of direct steam, and this 

 means has been frequently employed when large quantities of 

 the material are made. 



Diluting Concentrated Soeutions for Use. 

 With our present knowledge, the strength of lime-sulphur to 

 use depends upon its density. This may be determined by a 



*Cordley, A. B. "Insecticides and Fungicides." Oregon Agric. Expt. 

 Sta. Bull. 108 (1910). 



i 



