MANURES AND FERTILIZERS. 61 



matter as did the manured plat, while the un- 

 maiiured plat gave about three-fifths that of 

 the manured. A liberal manuring increased 

 the albuminoids in the crop; in the kernels 

 there was a marked increase in the protein 

 and nitrogen-free extract. 



At the Missouri station barn -yard manure 

 (solid and liquid together) increased the yield.* 

 At the Texas station, on poor, shallow, upland 

 "post oak" subsoil of stiff clay, cow manure 

 gave most profitable returns, though bone meal 

 produced the largest increase in yield. f 



Artificial fertilizers have been largely used 

 with profit in this country, notably South and 

 East. It would be useless, however, to recom- 

 mend to the farmer the use of anything but a 

 complete fertilizer for corn, not knowing the 

 soil conditions or the adaptability of a given 

 farm to this cereal. If the soil is deficient in 

 nitrogen, potash or phosphoric acid, the best 

 'way to do will be to try some special fertilizers 

 containing these ingredients, and so determine 

 just what the land needs most. It will be safe, 

 however, unless in exceptional circumstances, 

 to use plenty of stable manure for the cornfield 

 and then supplement this with a dressing of 

 fertilizer. 



* Missouri -agTicultural experiment station, Bulletin No. 

 14. 



f Texas agricultural experiment station, report for 1889, 

 p. 11. 



