Crop Yields From Illinois Soil Experiment Fields Including the Crop Season 1935
Crop Yields From Illinois Soil Experiment Fields Including the Crop Season 1935
F C Frederick Charles Bauer
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6 57. 7 58. 3 58. 6 29. 9" 33. 2" 31. 5" 33. O a 28. 3 31. 0 28. 5 30. 4 30. 1 (2. (2 (2, (2 (1 (1 (1 (1 (1 , 50) b, 79) b 72) b 81) b . 68) . 75) 69) 69) 59) 1 2 2 2 1 1 1 1 1 965 205 190 197 591 816 806 839 789 1. 000 1. 122 1. 114 1. 118 1. 000 1. 141 1. 135 1. 156 1. 124 1. 032 1. 174 1. 123 1. 150 . 897 1. 062 1. 072 1. 084 1. 083 M . . . . 59 ML 61 MLrP 61 . . . . 49 R . . . . 58 RL 61 RLrP 61 RLrPK ... 60 a Average of 19 crops. B Average of 11 crops. TABLE 68. MINONK FIELD: NITROGEN FERT...ILIZER TESTS SODIUM NITRATE AND AMMONIUM SULFATE COMBINATIONS APPLIED AS SUPPLEMENTS TO SYSTEMS OF SOIL TREATMENT Present rotations: Manure system Corn, corn, oats, clover-alfalfa; Residues system Corn, corn, oats (Le), wheat (Le) (Average crop yields 1928-1935 in bushels per acre) Treatment systems Increases for nitrogen* fertilizers Corn 1st year 7 crops Corn 2d year 5 crops Oats 5 crops Wheat 8 crops .. 2. 4 -. 9 -. 8 4. 3 -. 7 1. 0 . 1 3. 4 1. 1 3. 2 1. 2 3. 2 -1. 0 1. 0 2. 5 3. 5 . 9 3. 2 1.
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