68 MASS. EXPERIMENT STATION BULLETIN 369 



Brands Brands Samples Number of Number of 



Registered Collected Drawn Analyses Determinations 



Mixed fertilizers 340 350 1,100 457 8,143 



Ground bone, tankage and fish 44 42 143 45 580 



Nitrogen products:, mineral and or- 

 ganic 50 48 227 124 536 



Phosphoric acid products 34 35 145 38 549 



Potash products 16 15 72 23 147 



Dried pulverized natural manures. . 29 29 88 29 292 



Nitrate of potash 6 



Peat products 3 3 6 3 27 



Wood and cotton hull ashes 8 7 11 11 83 



Miscellaneous 10 10 24 11 122 



Lime products 53 52 117 59 1,061 



Totals 593 598 1,944 807 11,588 



During the period July 1, 1938, to July 1, 1939, the tonnage of fertilizer and 

 plant food sold in Massachusetts was as follows: 



Plant Food Elements (Tons) 

 Fertilizer 



(Tons) Available 



Nitrogen Phosphoric Potash 

 Acid 



Mixed fertilizers 41,616 2,131 3,529 3,053 



Unmixed fertilizer chemicals and materials 20,800* 1,324 1,974** 775 



Pulverized natural manures 1,558 33 28 43 



Totals 63,974 3,488 5,531 3,871 



*Not counting 1,779 tons of triple superphosphate distributed through A. A. A. 

 **Not including 825 tons of available phosphoric acid distributed through A. A. A. 



Full details of the fertilizer and lime inspection will be found in Control Bulle- 

 tins 100 and 101. 



Miscellaneous Analytical and Diagnostic Work. (H. D. Haskins, H. R. DeRose, 

 A. F. Spelman, J. W. Kuzmeski, L. V. Crowley.) Chemical studies have been 

 carried on in cooperation with several departments of the Experiment Station, 

 Field Station, County Agents, and men in charge of the Soil Conservation work 

 of the State. The character and extent of this work is shown in the following 

 summary: 



Apple spray residue 32 Peat 4 



Cranberry spray residue 5 Poultry manure IS 



Fertilizer mixtures 21 Soil 44 



Forage and field crops 224 Triple superphosphate 



Grain ration 1 (A. A. A. distribution) 39 



Insecticide 1 



Limestone (A. A. A. distribution) 22 Total 408 



Other woik of the department has included consultations on various projects 

 where chemical problems were involved. 



Mr. H. R. DeRose has made some vegetation pot studies during the winter 

 and early spring on buckwheat and tomatoes, to note the effect of some of the 

 trace elements on plant growth. The chemical analysis of the crops has not been 

 fully completed. 



A considerable variety of chemical work has, as usual, been done for other 

 State Institutions, community organizations, firms and individuals having prob- 

 lems of agricultural interest. This group includes the analyses of the following 

 materials: 



