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RAPP CHATS—from Page 5 Crop—Corn; None bu. acre, 101 ; Shattered bn. acre, 94 S.; Shattered and dbep treated** bu. acre, 102; Crop—Soybeans None bu. acre, 30; Shattered bu. acre, 30; Shattered and deep treated** bu. acre. 32 S.; Crop—Wheat; None bu. acre. 31 ; Shattered bu. acre, 27 S.; Shattered and deep treated** bu, acre, 31; Crop—Corn None bu. acre, 106; Shattered bu. acre. 100 S.; Shattered and deep treated** bu. acre. 109 S.; (1948, 50, 51 & 52)
The result of a 42 year study of the effect of subsoiling in comparison to ordinary plowing in Ohio is given in the following: Deep Tillage Did Not Increase Crop Yields 12 year average yields. Wooster
Plowing The Ordinary Way Crop—Corn,, Bu.; 7^/2 inches only. 61.1; 7 J/2 inches plus 7 l/z inches subsoil plowing. 61.3; Spalding Deep Dish Plow 15 ins., 59.5 ; Crop—Oats, Bu.; 7 Vs! inches only, 49.0; 7 J/2 inches plus 1 x/z inches subsoil plowing, 49.0; Spalding Deep Dish Plow 15 ins, 49.3; Crop—Wheat, Bu., 31.5; 7 J/2 inches plus 7 Vz inches subsoil plowing, 31.6; Spalding Deep Dish Plow 15 inches, 31.5; Crop—Clover, Tons; 7 Vz inches only, 2.7; 7 */2 inches plus 7 Vz inches subsoil plowing, 2.6; Spalding Deep Dish Plow 15 inches, 2.5 ,
Quoting from the Ohio report “Deep rooted plants such as alfalfa and sweet clover grown either with or without grass still offer the most practicable approach to making a deeper unit of soil capable of furnishing air, water, and plant nutrients to growing crops. The process of root decay furnishes channels for water percolation . and air penetration. Furthermore, this process can be made practically continuous if land is reseeded back to meadow a year after plowing the existing legume-grass sod for corn or their cultivated crops.”
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