145 



ranged from 12.3 to 29.5 per cent and averaged 18.4 per cent of the 

 weight of the field cuied ; and the i)roi)ortiou of kernels to cob, which 

 ranged from 18.5 to 21.4 per cent and averaged 19.9 per cent. Accord- 

 ing to this table neither the shrinkage nor the proi)ortion of kernel to 

 cob would seem to have been influenced by the feitilizers applied. 



Doen the appVicaUon of fertilizers have any relation to the amount of 

 2)hosphoric acid, nitrof/en, and potash taken up by the crop f — The crops 

 from six plats, used in experiments Nos. 1 and 2, including two unfer- 

 tilized, were taken and analyses made of the corn, stover, and cobs 

 from each. The tabulated results show that in no instance was as 

 much potash or phosi)horic acid taken up by the crop as was applied 

 In the fertilizer. The maximum crop contained over threefold the 

 amount of nitrogeu applied in the fertilizer. 



Cooperative experiments tclth corn.— In order to test the soils of other 

 geological formations of the State, a series of co operative experiments 

 was begun in 1889. The fertilizers were mixed at the station and sent 

 out labeled and accompanied by directions to be followed by the farmers 

 CO operating. Nitrogeu was supplied in a mixture of nitrate of soda, 

 sulphate of ammonia and azotine; phosphoric acid as dissolved bone- 

 black ; and potash as muriate. The fertilizers were applied singly on 

 three plats, two by two on three, and all together on one, one plat 

 receiving laud plaster, and two no manure. The plan of the experi- 

 ments was approximately the same as that proposed in the conference 

 of representatives of experiment stations, already alluded to, the chief 

 difference being that nitrogen was supplied in the mixture mentioned 

 rather than in nitrate of soda alone. 



The trials were made on fourteen farms, on the upper and lower sub- 

 carboniferous, carboniferous, lower Silurian, and quaternary formations. 

 Each report gives notes on the weather, the crop at different stages 

 of growth, and yields of corn and stover. The results varied widely, 

 and there were several failures. " The experiments will, in all prob- 

 ability, have to be continued for several years before general conclu- 

 sions can be reached." 



Kentucky Station, Bulletin No. 27, April, 1890 (pp. 11). 

 Experiments with commercial fertilizers on hemp, M. A. 



SCOVELL, M. S. 



Effect of potash, phosphoric acid, and nitrogen, used in various combina- 

 tions, on the production <f fiber. — The field used for this experiment was 

 "very much worn and would be considered bj' most farmers unfit for 

 hemp." The plats were each one fortieth of an acre. A description of 

 the treatment of the field, fertilizers applied, and method of planting is 

 given, together with field-notes. From the tabulated statement of re- 

 sults it appears that nitrate of soda and muriate of potash, singly and 

 combined, materially increased the yield ; that phosphoric acid had 

 very little effect ; that the combination of muriate of potash and nitrate 



