18 BULLETIN 528, U. S. DEPARTMENT OF AGRICULTURE. 
FIELD OPERATIONS AND LABOR REQUIREMENTS (165 FARMS). 
Hours of labor per acre. 
Com (for grain): Man labor. Horse labor. 
Manuring 11. 9 11. 9 
Plowing 5. 5 11.0 
Rolling, 2 times 1. 4 2. 8 
Disking, 2 times .- 2. 2 8. 6 
Spike-tooth harrowing, 2 times 1. 6 3. 
Drilling fertilizer 1.2 2. 4 
Seeding 1.1 2.1 
Cultivating 5. 2 10. 4 
Cutting, 70-bushel yield 10. 
Husking, 70-bushel yield 19. .... 
Hauling grain .' 6. 2 6. 2 
Hauling stalks 4. 4. 
62.4 
Corn (for silage): 
Preparation, seeding, and cultivation 30. 1 52. 2 
Harvesting and filling silo 35. 20. 
65. 1 72. 2 
Potatoes: 
Manuring 11. 9 11. 9 
Plowing 5. 5 11.0 
•Rolling, 2 times : 1. 4 2. 8 
Disking, 2 times 2. 2 8. 8 
Spike-tooth harrowing, 3 times 2. 4 4. 8 
Cutting seed 10. 
Planting 4. 1 5. 3 
Cultivating, 5 times 8. 16. 
Spraying for bugs, 2 times. 1. 2 1.2 
Digging 3. 2 9. 6 
Picking up and bagging 20. 
Hauling and storing. 5. 4 5. 4 
Marketing 21. 3 16. 6 
96. 6 93. 4 
Oats: 
Plowing 5.5 11.0 
Rolling, 2 times 1. 4 2. 8 
Spring-tooth harrowing, 2 times 2. 4. 
Seeding 1. 1 2.2 
Cutting 9 2. 7 
Shocking 1.7 
Hauling to barn 3. 4 3. 4 
Thrashing — hired done by contract 
16. 26. 1 
