12(^ 



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 nitcrlinic, a combination ftf nitrate of 

 soda and quicklime, 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 gTass also cut 

 for hay, and onions. AYith the exception of the onions, 

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

 plots in the field whicli have received no application 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 effect of each of the 

 ' phosphates on plots 2 to 6 is aflbrded by 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 natm^al 

 fertilit3^ The crop the present year has been onions. 

 These throughout this part of the State have general h' been a 

 poor crop this year. Our yields are comparatively small even 

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



Onions on Plots tvilh Equal Amounts of Phosphoric Acid. 



Fertilizer. 



Onions Scallions 



(Bushels per (Pounds per 



Acre). Acre). 



No phosphate, .... 



Apatite, 



South Carolina rock phosphate, 

 Florida soft phosphate, . 

 Phosphatic slag, 

 Tennessee phosphate, . 



No phosphate 



Dissolved bone-black, . 



Raw bone 



Dissolved bone meal. 



Steamed bone meal. 



Acid phosphate. 



No phosphate, .... 



19.5.7 

 101.7 

 121.8 



52.3 

 •2.52.0 



44.6 



.50.. 5 

 173.8 

 301.4 

 388.9 

 243.8 

 159.4 



26.2 



8,560 

 8,480 

 9,360 

 6,880 

 5,600 

 6,960 

 5,.360 

 5,640 

 4,144 

 5,400 

 5,840 

 6,560 

 6,61)1) 



