FERTILIZERS AND AGRICULTURAL LIME 23 



AGRICULTURAL LIME PRODUCTS 

 Manufacturers and Brands 



During 1944, 15 firms registered for sale in Massachusetts 30 brands of lime 

 products, manufactured and sold for neutralizing acid soils, and one brand of 

 agricultural talc. The products are grouped as follows: 



Hydrated or slaked lime 16 



Pulverized and ground limestone 14 



30 



Agricultural talc 1 



The analytical results which appear in this bulletin represent officially drawn 

 samples secured by the same sampling agents who drew the samples of com- 

 mercial fertilizer which served for the inspection of that commodity; the samples 

 therefore came from every section of the state and are, we believe, representative 

 of the lime products sold in Massachusetts as soil amendments. 



We were not successful in securing samples of the following brands: 



L. A. Howard & N. L. Howard, Proctorsville, Vt. 



Howard's Agricultural Talc 

 Kelley Island Lime <& Transport Co., 1122 Leader Building, Cleveland, Ohio. 



Tiger All Purpose Hydrated Lime 

 Limestone Products Corporation of America, Newton, N. J. 



"Lime Crest" Brand Calcite Hydrated Lime for Agriculture Use 



"Lime Crest" Brand Calcite Pulverized (Pulverized Limestone) 

 Rockland-Rockport Lime Co., Inc., Rockland, Maine 



R-R Ground Limestone, Grade M 

 Solvay Process Co., Syracuse, N. Y. 



Solvay Pulverized Limestone 

 United States Gypsum Co., 300 West Adams St., Chicago, III. 



Red Top Hydrate Lime — Genoa, Ohio 



USG .Agricultural Limestone — Falls Village, Conn. 



Variations and Deficiencies Found in the Composition of Lime Products 



Of the lime products effective in neutralizing soil acidity, about 67 per cent 

 of the samples analyzed fully met the minimum guarantee; of the 14 samples of 

 ground limestone, 6 showed deficiencies. The deficiencies were not of a serious 

 nature as the companion ingredient was present in sufficient excess in most cases 

 to more than make up the full neutralizing value of the product as based on the 

 stated guarantee. The same ma\- be said of the hydrated lime products where 

 3 out of 12 samples showed a deficiency. The tables of analyses show the extent 

 of variations from the guaranteed composition. 



