88 FUNGICIDES COMBINED WITH POISONS 



Remember that these are the dilutions for summer strength hme 

 sulphur to be used on apple trees in leaf, and not for the winter wash, 

 which is much stronger. 



The self -boiled lime sulphur is for summer use only, and has nothing 

 to do with the winter wash used for scale insects. The method of 

 making is as follows: 



Place 20 pounds of lump lime in a barrel and pour over it 3 gallons 

 of cold water. As soon as the slaking is well started, add 20 pounds of 

 flowers of sulphur, which must be free from lumps. Begin stirring the 

 mixture as soon as the sulphur is added. A violent heat will be gen- 

 rated by the slaking of the hme, and it is this that brings about the 

 desired combination of the two materials. Now add more cold water 

 until the mass has the consistency of paste. The boiling will subside in 

 from 5 to 15 minutes, and at once more cold water must be added so 

 that no further action will take place. There should be none of the red 

 hquid that indicates the formation of the chemical compounds charac- 

 teristic of the winter wash. The mixture may now be diluted for use by 

 adding water until there are 100 gallons all told. Great care should be 

 taken to follow the above directions accurately, for if the boiling is con- 

 tinued too long, compounds will be formed that will burn tender foliage. 

 In no case should hot water be used instead of cold, either for slaking 

 the lime or for the dilutions. 



Arsenate of lead may be added to the summer strength lime sulphur, 

 thus providing a combined fungicide and poison insecticide, with 

 certain additional properties as a contact insecticide. This applies 

 either to the diluted concentrate or to the self-boiled lime sulphur. 



