13G 



EXPERIMENT STATION RECORD. 



Ufect of fertilizers (pp. 51-53).— This experiment was hegnn in 1889. 

 Winter rye occnpies the laud during winter and is plowed under in 

 sijring. Light and heavy applications of fertilizers gave about the 

 same increase, but in most instances the use of fertilizers was not 

 pro ti table. 



Observations on the growth of maize continuously on the same 

 land {ConnccHcut Htate Sta. Rpt. l^!fo,2ip- ^^<i-SOO). 



Synopsis.— ^\&\i\ in dry lautter of plats differently fertilized; imnlyses of kernels, 

 cobs and stover grown with different manures and fertilizers; ,i;aiu or loss of 

 iertiliziug ingredients in the soil by 4 years of manuring and cropping with corn ; 

 determination of the amounts of nitrogen in the experimental plats; and notes 

 on the Dumas, Kjeldahl, and Jodlbauer-Kjeldahl methods of determining nitro- 

 gen. Thirteen and one half cords of hog manure per acre gave slightly larger 

 crops than 10 cords of cow manure. The dry matter of the kernels grown on 

 unfertilized laud contained a smaller percentage of albuminoids, fat, and ash, 

 lint a larger ])roportion of fiber and nitrogen-free extract than the grain grown 

 on highly fertilized soil. 



A continuation of the work described in the Annual Keport of the 

 station for 1892 (E. S. K., 4, p. 90r)). in 1890, 1891, 1892, and 1893 plat 

 A was fertilized with cow manure at the rate of 10 cords per acre, i)lat 

 P> with 13A cords of hog manure per acre, plat C with 1,700 lbs. of 

 chemical fertilizers per acre, and plat T> was unfertilized since 1888 and 

 1889, in which years all the plats received an application of commercial 

 fertilizers. The yields per acre of dry matter in 1893 on plats differ- 

 ently fertilized were as follows: 



Yield per acre of dry matter hi corn crop. 



The relative yields of dry matter for 4 years, the yiehl of the i)lat fer- 

 tilized with cow manure being tak<'n as 100, were as follows: 



Relatire yields of dry matter in corn crop uifl'cnntly frrlili:ed /or 4 yearn. 



As the average of 4 years, hog manure gave results slightly better 

 than cow manure, chemical fertilizers nearly seven eighths as much, and 

 the unfertilized plat only three fifths as much as the plat manured with 

 cow mauure. 



