ABSTRACTS (IF lUlLFJINS (IF THE A(il{irFLTri{AL EXl'ElilMENT STATKINS IX 

 THE FMTEI) STATES FK(IM JANFAHV Td JFNE. 1889. 



FA^Ti'r II. 



KKXTI CFvV 



Kentucky Agricultural Experiment Station. 



Drjitiiiment of the AiirU'iilhtral dial Mcchaidcal CoUe(je of Kcntiickij. 

 Location, Lexinjrton. Director, M. A. Scovell, I\I. !S. 



BULLETIN No. 17. FEBKIARY. 1880. 



Field expeki^iexts with corn, M. A. Scovell, M. S., akd A. M. 

 Petek, M. S. (pp. 8-21). — This is a first report of the series of 

 e\j)eriinents beonin in 1888 on the Station farm to study the effects of 

 d liferent fertilizin<>- materials upon corn in the particuhir soil nnder 

 e.\l)erinient. which is in the Blue (Irass region, and is derived from 

 tile lower silurian limestones. Engravings from photogra]:)hs illus- 

 Irate the etfects of different fertilizers on corn. 



K'Ifcctx of h'ddhxj elements of plant food in rarlons (■o]iil>/ii(itlons on 

 cum. — Sulphate of potash, sulphate of annnouia. and acid phosphate 

 were used singly and in combination. Although there Avas no con- 

 siderable du])licati()n of fertilized plats, the results, which are stated 

 in tabulai- form, imjjly \erv strongly that for corn i)()tash is especially 

 needed on the soil of the Station farm. Other experiments imply that 

 the same is true for potatoes, hemj), and tobacco; and the indications 

 are that wheat also would l)e greatly benefited by the apj)Iication of 

 j>otash. A natural inference is that on soils of like character in the 

 l>lue (xrass region generally the same fertilizer will be useful, but 

 this can be demonstrated only by actual trials. 



I'nid nciiil results fi'oni the use of luir'toiis fertil'aers on com. — It 

 njjpeai's that ( 1 ) there was a profit in every instance wluM'e potash 

 was used, potash alone yielding the largest net pi-ofit : (-1) whi-re 

 phosphoric acid and nitrogen without potash were used none of the 

 money paid foi' the fertilizer was recovei'ed : (;») the phosphoric acid 

 and nitrogen a^jplied with potash prol);d)ly caused little, if any, 

 increase of yield, showing that tlie money paid for them was un- 

 profitably expendecL 



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