Bui. 1180, U. S. Dept. of Agriculture. 
Plate X. 
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Fig. I. — Early Growth of Cotton with Double Salt. Field 3, Season 
of 1921. 
At left, no fertilizer; yield 120 pounds of seed cotton per acre. At right, double salt, 1,000 pounds 
2-8-4 fertilizer per acre; yield 763 pounds of seed cotton. 
Fig. 2. — Growth of Corn with Double Salt. Field 3, Season of 1920. 
At extreme left, no nitrogen, 1,000 pounds 0-4-2 fertilizer per acre: yield 19.6 bushels. Center 
(1 row), no fertilizer; yield 17.1 bushels. At right, double salt, 1,000 pounds 4-4-2 fertilizer per 
acre; yield 33.9 bushels 
