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TABLE 8.-COMPARATIVE EFFECTS OF DIFFERENT NUMBERS OF APPLICATIONS OF A 4-9-4 FERTILIZER ON GROWTH AND YIELD
 OF PECAN TREES SET IN 1920.

 pH of Soil Growth Increment Per Tree Yield Per Tree in Pounds a
 Plot No.* 0-9 Inches Area of Trunk Cross Section in Square Inches
 SI Avg. Annual for
 1932"* i 1i2 1926 1927 19281 1929 1930 1931 Total II 1925 1926 1927 1928 1929 19 0 1931 Total 1928-31

 CURTIS

 1 5.3 6.6 8.2 7.0 10.0 9.6 9.4 8.4 59.2 0.7 6.4 3.5 27.0 0.6 1.7 35.5 75.4 16.20
 2 5.4 5.6 9.1 8.4 8 10.1 10.0 10.5 62.5 0.3 3.6 2.3 19 8 0.3 2.6 28.7 57.6 12 85
 3 5.4 5.6 6.5 7.4 7.4 7.9 8 4 8.0 51.2 2.1 3.9 5.7 16.3 0.8 1.2 46.1 76.1 16.10
 4 5.4 4.9 6.2 6.7 9.4 8.9 8.4 6.4 50.9 0.4 1.1 1.9 5.4 1.1 0.3 21.4 31.6 7.05
 5 5.3 5.3 6.5 5.0 8.2 7.4 7.0 5.4 44.8 0.8 3.1 4.5 5.1 2.4 1.3 36.0 F3 2 11.20
 6 5.3 3.5 4.9 4.7 7.3 6.1 9.3 7.6 43.4 0.3 1.7 3.6 7.7 1.3 1.5 15.2 31.3 6.42
 7 5.4 2.4 4.1 3.7 6.4 6.1 5.8 4.4 32.9 02 3.1 2.3 8.5 0.9 1.2 21.3 37.5 7.97
 8 5.3 2.7 4.1 3.8 6.0 5.4 5.8 4.3 32.1 0.1 2.9 0.4 7.4 1.3 0.02 13.8 25.9 5.62
 Check 5.4 6.4 3.6 3.2 2.8 7.4 4.3 4.5 32.2 1.4 0.1 1.4 0.2 0.2 0.01 004 3.4 013

 SUCCESS

 1 5. 4.6 6.4 56 7.4 6.5 6.9 7.0 44.4 0.9 4.1 6.8 147 1.5 0.8 17.0 45.8 850
 2 4.7 5.3 5.4 8.0 81 6.1 840 7.7 48.6 1.0 5.5 36 16.9 0.6 0.4 22.8 50.8 10.17
 3 5.0 6.2 6.0 8.1 6.2 7.7 9.4 7.9 51.5 0.9 4.1 3.6 10.5 0.4 0.2 26.2 45.9 9.32
 4 5.1 5.6 5.5 6.9 7.1 6.1 6.8 6.4 44.4 0.6 3.5 3.9 7.8 1.4 0.1 289 46.2 9.55
 5 5.2 4.9 4.6 5.1 4.7 4.6 5.7 5.3 34.9 1.0 3.5 3.5 5.0 1.3 0.4 17.0 31.7 5.92
 6 5.3 4.1 5.5 5.4 5.3 45 4.8 4.6 34.2 0.2 1.2 4.5 2.7 1.1 0.1 10.6 20.4 3.62
 7 5.3 2.4 4.9 4.0 5.2 4.1 3.5 3.3 27.4 0.7 1.7 4.9 8.4 1.8 0.8 14.1 32.4 6.27
 8 5.3 2.6 3.2 3.7 4.6 4.2 3.6 2.7 24.6 0.4 2.3 1.3 5.9 1.3 0 4.4 15.6 2.90
 Check 5.0 3.9 2.8 5.2 6.6 4.8 4.3 3.2 30.8 0.2 1.5 1.4 1.3 0.4 1.1 7.2 13.1 2.50

 *Pounds of fertilizer applied per tree annually: 1925, 15; 1926, 20; 1927, 25; 1928 & 29, 30; 1930 & 31, 40; check, nothing.
 ** pH of composite sample of soil at start of experiment, 6.7.