1907.] PUBLIC DOCUMENT — No. 33. 27 



G in 189G. Twice since that date, in 1898 and in 1905, 

 the entire field has been limed, as observation of the growth 

 of the crops, especially of clover^ indicated that liming would 

 be beneficial. In 1898, lime was applied at the rate of 2,000 

 pounds per acre of air-slaked lime. In 1905, 2,395 pounds 

 of slaked lime were af)plied to the entire field, this being at 

 the rate of a little more than a ton to the acre. 



The crops grown in this experiment previous to this year 

 in the order of their succession have been : oats, rye, soy 

 beans, oats, soy beans, oats, soy beans, oats, oats, clover, po- 

 tatoes, soy beans, potatoes, soy beans, potatoes, oats and peas. 



The crop of the past season was Rustler White Dent corn, 

 the seed having been obtained in Minnesota. It may be here 

 remarked that this variety seems to be well adapted to our 

 local soil and climatic conditions. It gave a thoroughly 

 matured crop and a heavy yield. 



After the harvest of the crop of the season 1905 (oats 

 and peas), the land was replowed and sown to clover late in 

 August. This clover made a poor start, and was badly in- 

 jured by the winter. The condition in the spring was best 

 on plot (manure). It was poorest on plots 5 and 6 (sul- 

 fate of ammonia). On these there were but few living plants 

 remaining. The condition of the clover being so poor, the 

 field was plowed on May 18. The manure and the fertilizers 

 were applied in accordance with the regular system on May 

 21. The field was harrowed thoroughly on May 22 and 23 ; 

 it was planted on the 23d. The crop was thoroughly cared 

 for, and no exceptional conditions likely to interfere with 

 the experiment were noted. The rates of yield on the sev- 

 eral plots and the sources of nitrogen on each are shown in 

 the following table : — 



