126 



HATCH EXPERIMENT STATION. 



[Jan. 



year every plot in the field has received an extra application 

 furnishing nitrogen during the growth of the crop. The 

 material used was niterlimc, a combination of nitrate of 

 soda and quicklmie, containing 10.44 per cent, nitrogen and 

 20.41 per cent. lime. This was applied broadcast on July 

 2, at the rate of 176 pounds per acre, and cultivated in. 



The preceding crops have been : corn, cabbages, corn, 

 and in 1900 oats for hay, and Hungarian grass also cut 

 for ha}', and onions. With the exception of the onions, 

 all these crops have given large fields, even on the three 

 plots in the field which have received no appUcation of 

 phosphoric acid. Attention is once more called to the fact 

 that the soil of plot 1 seems to have been naturally in a 

 much higher condition of fertility than that of any other 

 plot in the field. In estimating the significance of the re- 

 sults, therefore, the yield of this plot should be disregarded. 

 A more correct indication of the eftect of each of the 

 phosphates on plots 2 to 6 is afforded b}^ comparing the 

 yields of those plots with the yield on plot 7. It is, how- 

 ever, without doubt true that the soil from plot 7 towards 

 plot 1 improves gradually in physical condition and natural 

 > fertility. The crop the present year has been onions. 

 These throughout this part of the State have generally been a 

 yiooY crop this year. Our yields are comparative!}- small even 

 on the best plots. The results are given in the table : — 



0)nons on Plots loith Equal Amounts' of Pliosplwric Acid. 



Fertilizer. 



No phosphate 



Apatite 



South Carolina rock phosphate, 

 Florida soft phosphate, . 

 Fhosphatic. slag, 

 Tennessee phosphate, . 

 No phosphate, .... 

 Dissolved bone-blacls, . 

 Raw bone, .... 

 Dissolved bone meal, 

 steamed bone meal. 

 Acid phosphate. 

 No phos))hatc, .... 



