May, 1929] Potato Production Costs in New Hampshire 35 



10. Spraying has resulted in marked increases in yield throughout 

 the state sufficient to more than pay for material and labor 

 costs. This was true in the dry year of 1926 as well as in the 

 wet year of 1927. 



11. A dusting schedule of approximately five applications is as 

 effective as three liquid Bordeaux sprays in blight control, but 

 the costs are about double for materials, and the saving in 

 labor is unlikely to offset all this cost. 



12. Amount of seed per acre was more important than amount of 

 fertilizer and manure applied within the ranges enumerated, 



13. Certified seed showed increases of 10 to 50 bushels per acre 

 over ordinary seed. 



14. Labor per acre was much less on those farms where the ro- 

 tation was short. 



15. Early planting in Coos, Grafton, Merrimack and Rockingham 

 Counties required less labor per acre and per bushel, and yields 

 were higher resulting in lower costs per bushel than late plant- 

 ing. In the other counties mid-season planting gave larger 

 yields and cheaper costs. 



16. The machine seed cutters were used satisfactorily with no 

 measurable influence toward greater or smaller yield. Nearly 

 three times as much cutting could be accomplished. 



17. Picker or one-man planters gave as satisfactory results in yield 

 as the platform or two-man planters, planting as close as 

 is common in the state. The saving in labor is an important 

 factor. 



18. The ability to produce as efficiently as competing areas, the 

 nearness to markets and the deficient production within the 

 state open opportunities for many New Hampshire growers 

 to produce potatoes profitably. 



References 



1. Can New Hampshire Produce More of What She Eats? 



N. H. Bulletin 222, Uni. of N. H., Durham, N. H. 



2. Methods of Forecasting New England Potato Yields. 



U. S. D. A. Mimeograph Report, Feb., 1929. 

 New England Crop Reporting Service. 



3. A Study by the Crop Survey Method of Factors Influencing the 

 Yield of Potatoes. 



N. Y. Cornell Memoir 57. 



4. An Analysis of the Costs of Growing Potatoes. 



N. Y. Cornell Memoir 22. 



5. Labor and Ma erial Reouirement of Field Crops. 



U. S. D. A Bulletin 1,000. 



6. Factors Affr ^f^ Re!; ns fr^m Potatoes in Massachusetts. 



Massachusetts Bulletin 240. 



7. Missing Hills n Potato Fields : Their Effect Upon the Yield. 



Geneva ?ia ion Bulletin 459. 



