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STATE BOARD OF AGRICULTURE. 



lutions. These results confirm the conclusions of other experiments, 

 viz : that if the lime-sulfur is to be stored for any length of time the 

 containers should be filled completely full and stoppered tightly to ex- 

 clude all air. 



We may conclude then, from the above experiment, that when the 

 lime-sulfur solutions are made according to the formula recommended 

 there is practically no deterioration in the solution when kept in contact 

 with the sediment providing it is stored properly. 



Later results have demonstrated that when the lime-sulfur solution 

 is made according to a formula calling for an excess of lime there is liable 

 to be a very considerable deterioration in the solution when kept in 

 contact with the sediment for any length of time, even when stored 

 properly. 



The sediment possesses no insecticidal or fungicidal value although it 

 is sometimes beneficial in serving as a marker during the spraying op- 

 eration. In purchasing commercial solutions it would be poor economy 

 therefore, to buy a solution containing sediment and pay lime-sulfur 

 prices for the comparatively worthless sludge. 



EXPERIMENT TO DETERMINE THE EFFECT OF RE-HEATING THE SOLUTION 



BEFORE USING. 



It has been recommended that limesulfur solutions which have been 

 allowed to cool should be re-heated before using. In order to determine 

 whether or not there is a distinct advantage in doing this, samples 3, 4 

 and 8 of the above experiment were used. In samples 3 and 8 the excess 

 of sulfur in the sediment was large; in sample 4 the excess of sulfur 

 was small. 



The analyses corresponding to the numbers 3B, 4B and 8B represent 

 the samples that have stood for several weeks in contact with the sedi- 

 ment. The analyses corresponding to the numbers 3D, 4D and 8D rep- 

 resent portions of the same samples that have been re-heated nearly to 

 boiling in contact with the sediment. 



In the first two samples there is a slight increase in total sulfur and 

 also in sulfide sulfur in the samples that have been re-heated but the 



