Bui. 1180. U. S. Dept. of Agriculture. 
PLATE XIV. 
Fig. I. — Yields of Corn with Ammonium Nitrate. Field 4, Season of 
1920. 
A1 lefl , no nitrogen, 1.000 pounds 0-4-2 fertilizer per acre; yield 32.6 bushels. At right, ammonium 
nitrate, 1,000 pounds 2-4-2 fertilizer per acre; yield 50.6 bushels 
Fig. 2. — Yields of Corn with Ammoniated Superphosphate. Field 4, 
Season of 1920. 
At left, no nitrogen, 1,000 pounds 0-10-2 fertilizer per acre: yield 18.6 bushels. At right, ammo- 
mated superphosphate, 1,000 pounds 4-10-2 fertilizer per acre; yield 33.4 bushels. 
