HOW TO GROW AND MARKET FRUIT 



lime gets very hot at once; partly slaked or slow lime will not 

 heat up so quickly nor so much. 



Ordinarily the mixture should boil about ten minutes; care 

 must be taken lest the boiling goes too far. During this time 

 the mixture should be stirred constantly. At the end of the 

 ten minutes, or as soon as all the lime is slaked, add cold water 

 to the mixture and stop further boiling. If the mixture is al- 

 lowed to remain hot ten or fifteen minutes after slaking is 

 completed, the sulphur will combine with the lime and form 

 sulphides which will burn foliage, particularly peach leaves. 



This solution can be left standing for a year, if desired, or 

 is ready to use at once. To the mixture, made as directed here, 

 add enough water to make fifty gallons; then strain, so it will 

 work through pumps and nozzles, and apply. 



Self-boiled lime-sulphur is one of the best mixtures we have 

 for scab, rust, some rots and many similar enemies. It is very 

 effective as a summer spray to hold the scales in check until 

 they can be cleaned up with the stronger fall and spring spray. 

 It forms one of the best bases to which poison can be added for 

 killing chewing insects. 



2. Dilute Lime-Sulphur Solution. |The regular concentrated 

 lime-sulphur (stock solution) mixture (formula 7), either home- 

 boiled or commercial, can be diluted in proportions of one and 

 one-half gallons of mixture to fifty gallons of water, and to this 

 two pounds of arsenate of lead added, to be used in place of the 

 self -boiled lime-sulphur. Some authorities recommend a hydrom- 

 eter to test the specific gravity of the lime-sulphur mixture, 

 but this test is unreliable and misleading unless all conditions 

 are just right. This solution (for foliage spraying) should test 

 1.1015 to i.oi specific gravity. Never neglect to include the lead 

 when diluting the No. 7 solution for summer work. Lead is 

 needed in the mixture to prevent burning foliage. 



3. Dilute Lime-Sulphur Solution. Commercial or home- 

 boiled concentrated lime-sulphur solution, (7), still more 

 dilute, with about one gallon mixture in fifty to sixty gallons 

 of water, and with the lead added, is useful on the tenderest 

 kinds of foliage, which the stronger solutions will burn. The 

 proper strength of this mixture (home-boiled) will test 1.005 

 specific gravity. 



[NOTE. Hydrometer tests of commercial solutions are not to be de- 

 pended on. Follow directions given by the makers to get proper strength.] 



4. Bordeaux Mixture. There are three strengths of Bor- 

 deaux Mixture, called standard Bordeaux, weak Bordeaux and 

 strong Bordeaux. Standard Bordeaux contains three pounds 

 of copper-sulfate (blue vitriol or bluestone), four pounds of 

 fresh stone lime (quicklime), and fifty gallons of water. Weak 

 Bordeaux Mixture contains one and one-half pounds of copper- 

 sulfate, three pounds of lime and fifty gallons of water. Strong 

 Bordeaux contains five pounds copper-sulfate, five pounds of 

 lime and fifty gallons of water. 



Put the copper-sulfate into a burlap bag; to dissolve it, hang 

 this overnight just beneath the surface of a vessel half full of 

 water. It also may be dissolved in boiling water, using at least 



90 



