1893.] 



PUBLIC DOCUMENT — No. 33. 



173 



shaded the ground (sufficiently to prevent any serious ap- 

 pearance of weeds. The variation in the coh:)r of the crop 

 was quite marked in different plats during the earlier stages 

 of its growth. Those plats which received an addition of 

 nitrogen in form of nitrate of soda showed a deeper green 

 color than those which received other forms of nitrogen, 

 in particular, sulphate of ammonia ; while those that received 

 no addition of nitrogen maintained a light green color until 

 the close of the season. 



Height of the Plants upon Different Plats during the Season. 



Plats 



Aug.l2. Aug. 19.!Aug.26. Sept. 2. 



Plat 



Plat 1 



Plat 2 



Plat 3 



Plat 4, 



Plat 5, 



Plat 6, 



Plat 7 



Plat 8 



Plat 9 



Plat 10 



Inches. 

 36 



Inches. 

 44 



44 



45 



46 



39 



42 



43 



41 



35 



39 



43 



Yield of Crop on Different Plats. 



