Table 9. — Cost arid return per 100-acre field for spring wheat production on level benches 



Natural 

 slope 



On 1-percent slope 



5 6- foot 

 bench 



70- foot 



bench 



On 2-percent slope 



56- foot 



bench 



70- foot 

 bench 



Benches without contributing areas: 



Wheat production 



.Increase over natural slope 



Gross returns from wheat 



Investment cost 



Increased gross returns 



Increased annual fixed cost 



Increased net returns (over fixed cost) 



Benches with contributing areas: 



Wheat production 



Increase over natural slope 



Gross returns from wheat 



Investment cost 



Increased gross returns 



Increased annual fixed cost 



Increased net returns (over fixed cost) 



Bushels 



2 



813 



3,108 



3,136 



3,057 



3,085 



do. 









295 



323 



244 



272 



Dollars 



4 



782 



5,284 



5,331 



5,197 



5,245 



do. 





— 



3,197 



3,700 



5,652 



7,088 



do. 









502 



549 



415 



463 



do. 









258 



298 



455 



571 



do. 





— 



244 



251 



-40 



-108 



Bushels 



2 



813 



2,999 



3,012 



2,972 



2,985 



do. 









186 



199 



159 



172 



Dollars 



4 



7 12 



5,098 



5,120 



5,052 



5,075 



do. 









1,652 



1,904 



2,949 



3,683 



do. 









316 



338 



27C 



293 



do. 









133 



153 



238 



297 



do. 









183 



185 



32 



-4 



Table 10. — Terrace construction for which payment was made under the 



Agricultural Conservation Program in North Dakota, South 



Dakota, and other States 1 



Table 11. — Contour farming and stripcropping in North Dakota, South 

 Dakota, and other States, 1964- 1 



State 



1965 



1966 



1967 



1968 



4-year 

 total 







Acres served 



120 100 429 

 14,972 7,287 53,290 

 4,973 3,544 12,773 



North Dakota — 

 South Dakota — 

 Minnesota 



194 15 



13,250 17,781 



1,890 2,366 



Nebraska 



Kansas 



Wyoming 



Montana 



All other 

 states 2 



136,764 130,156 107,407 152,760 527,087 



272,454 275,483 205,175 211,847 964,959 



688 1,057 1,607 873 4,225 



425 1,200 215 1,840 



261,052 238,295 203,599 192,012 894,958 



United 

 States — 



737,883 707,925 573,071 607,906 2,626,785 



Data from Agricultural Conservation Program , 1965-67 Summary , 

 Agricultural Stabilization and Conservation Service, U.S. Department 

 of Agriculture, Washington, D.C., 1968, and Agricultural Conservation 

 Program Accomplishments , 1968 , Agricultural Stabilization and Conser- 

 vation Service, U.S. Department of Agriculture, Washington, D.C., 1969. 



2 Most of this acreage is in Oklahoma, Texas, Missouri, Georgia, 

 Alabama, and South Carolina. 



Data from U.S. Census of Agriculture , 1964. 

 Includes "grain and row crops grown on the contour." 

 "Land in strip-cropping systems for erosion control. 





Total 



crop- 

 land 



Contour farming 



Stripcropping 



State 



Area con- 

 toured 2 



Percent- 

 age of 

 total 

 cropland 



Area 

 strip- 

 cropped 3 



Percent- 

 age of 

 total 



cropland 



North Dakota 



South Dakota 



Minnesota 



Nebraska 



1,000 1,000 1,000 



acres acres Percent acres Percent 



27,446 192 0.7 3,228 11.8 

 18,707 232 1.2 780 4.2 

 22,243 454 2.0 582 2.6 

 26,356 2,309 8.8 395 1.5 

 22,100 1,644- 7.4 959 4.3 

 29,421 3,336 11.3 707 2.4 

 2,766 14 0.5 378 13.7 

 15,388 78 0.5 5,638 36.6 



269,805 13,306 4.9 4,016 1.5 



W 



Montana 



All other 



States 



United States 



434,232 21,565 5.0 16,683 3.8 



■b U. S. GOVERNMENT PRINTING OFFICE : 1 970— 39"t-380/ERS-56 



21 



