Bui. 1180. U. S. Dept of Agriculture 
Fig. I. — Growth of Cotton with Urea. Field 
Season of I920. 
At left, urea. 1,000 pounds S-8-4 fertilizer per acre: yield 1,412 pound? of seed cotton. At righl 
no nitrogen, 1,000 pounds 0-8-4 fertilizer per acre; yield 736 pounds of seed cotton. 
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Fig. 2. — Growth of Corn with Urea. Field I, Season of 1921. 
At left, urea, l,00D pounds 4-4-2 fertilizer per acre: yield 41.1 bushels. At right . no nitrogen, 1,000 
pounds 0-4-2 fertilizer per acre; yield 24.6 bushels. 
