132 



HATCH EXPERIMENT STATION. 



[Jan . 



fertilizers has been made to all plots alike. The crops which 

 have been grown in the field during the progress of the ex- 

 periment are as follows : corn, cabbages, corn, in 1900 two 

 crops, — oats and Hungarian grass (both for hay), onions, 

 onions, and cabbages. With the exception of the onions 

 and cabbages, all the crops previously grown in the field 

 have given good yields, even on the three no-phosphate 

 plots. The soil of the different parts of the field was not 

 even in fertility at the start. Plot 1 was .somewhat more 

 productive than any of the others, and in general the plots 

 tended to decline in productiveness from 1 toward 13. The 

 crop the past season was corn. The soil of the field inclines 

 to be heavy, and the corn crop during the prevailing cool 

 weather of the past season suffered from poor soil conditions 

 and low temperature, especially on plots 8, 11, 12 and 13. 

 Observation of the growth of the crop of the preceding 

 year (cabbages), and study of the soil conditions through- 

 out the preceding season, had led to the conclusion that the 

 physical and chemical conditions of the soil in the field would 

 be improved by a heavy application of lime. The field was 

 plowed in the fall of 1903. Freshly slacked lime to the 

 amount of 4,675 pounds (about 2,000 pounds per acre) was 

 applied on May 10 and plowed in on May 15. The variety 

 of corn grown was the Learning Field. The seed was 

 obtained of E. E. Chester & Son, Champaign, 111., and was 

 of excellent quality. The rainfall was so excessive, how- 

 ever, that there were a few blanks in some of the plots. 

 The crop was cut on September 19 and immediately weighed 

 and put into the silo. The rates of the yields on the several 

 plots are shown in the following table : — 



Plots. 



Fertilizers used. 



Green Corn 



(Pounds per 



Acre) . 



No phosphate 



Apatite, 



South Carolina rock phosphate, 

 Florida soft phosphate, 

 Phosphatic slajc, . . . . 

 Tennessee phosphate, . 

 No phosphate, . . . . 

 Dissolved bone-black, . 



Raw bone, 



Dissolved bone meal, . 

 Steamed bone meal, 

 Acid phosphate, . . . . 

 No phosphate, . . . . 



41,000 

 40,720 

 40,496 

 28,240 

 36,440 

 32,120 

 32,344 

 30,080 

 45,800 

 41,840 

 28,400 

 29,040 

 20,240 



