308 



PRINCIPLES OF SPRAYING 



n 



simpler method is to put the materials in a large iron kettle over a 

 fire. The red liquid may be poured into barrels and covered with 

 oil to prevent evaporation while being stored. This concentrated 

 solution must be diluted before using. For example, if the reading 

 of the hydrometer is 35°, 1 part to 9 parts of 

 water may be used for the winter spray for San 

 Jose" scale or as a winter fungicide. Twelve parts 

 of water to one part of this same liquid will be 

 right for the blister mite. One part of this 

 strength of liquid to 45 parts of water would 

 be strong enough for the summer spray on 

 apples when the trees are in full leaf, (p. 397). 

 Commercial Lime-sulfur. — This is sold in con- 

 centrated form by a number of manufacturers. 

 It is a clear amber or red liquid, and will test 

 from 32 to 35 degrees on the Baume" hydrometer 

 (Fig. 216). It is ready to be mixed with water 

 according to the proportions mentioned for 

 the home made preparation. With this and 

 powdered lime-sulfur directions come with the 

 package showing the dilution for different 

 purposes. (See Appendix tables). 



Self-boiled lime-sulfur is prepared by the 

 heat formed in the slaking of the lime. Use 

 eight pounds of good fresh, unslaked lime. Add 

 water to start the slaking gradually, but use 

 sufficient to keep it from burning or lumping. 

 When heat has begun to generate well, slowly 

 sift into this eight pounds of the fine sulfur. 

 Stir the mixture constantly and thoroughly. 

 Add more water as needed. As soon as the 

 boiling has ceased add the remainder of the 

 cold water to make a mixture of 50 gallons. 

 Fia 216 — Hydrome- (This formula is written 8-8-50). Agitate well. 

 ter and cylinder for use it is used as a special spray material against 



in testing the density of . . ,, , r ,t , 7 ■. 



lime-suifur and other peach scab and brown rot of the stone fruits. 



spray materials. It. is t, • 1 .-i __ . , . Al .. P *. 



scaled by the Baume Poison can be easily mixed with it for curculio, 

 app n endii a^dhnS bud worms and other chewing insects. In 

 station - ) making this preparation the amount of boiling 



variable. If hot water is used, the solution boils 



is 

 The 



stronger 1 .' liquid may 



used, 

 injure peach leaves. 



more. 

 This may 



