404 



TIMBER RESOURCES FOR AMERICA'S FUTURE 



of activity, since the end of World War II, has 

 been about the same as it was during former 

 periods of agricultural prosperity. 



On the basis of population and gross national 

 product assumptions similar to those developed in 

 this study, the Department of Agriculture has 

 projected a 34 percent increase in total farm output 

 during the period 1951-53 to 1975. '^^ This would 

 consist of a 45 percent increase in the output of 

 livestock and livestock products and a 25 percent 

 increase in the output of all farm crops, as shown 

 in the tabulation in column two. 



Increases of this magnitude will, of course, entail 

 substantial increases in the requirements for 

 housing livestock and for the storage of crops. 

 Looking beyond to the year 2000, the increase 

 of total farm output over 1951-53 production will 

 probably be in the neighborhood of 80 percent on 

 the basis of a 275-million population and in the 

 neighborhood of 140 percent on the basis of a 

 360-million population. 



The unusually large volume of new farm 

 structures erected since 1945 was due in part to 

 demands whidi had accumulated during World 

 War II when materials and labor were in short 



'2" Barton, Glen T., and Rogers, Robert O. Farm Output, 

 Past Changes and Projected Needs. U. S. Dept. Agr., Agr. 

 Inf. Bui. 162, p. 9. 1956. 



Increasf 

 by 1975 



over 

 W51-5S 

 average 

 (.percent) 



Livestock and livestock products 45 



Cattle and calves 50 



Sheep and lambs 25 



Hogs 41 



Milk 32 



Eggs 49 



Broilers and chickens 60 



Turkeys 49 



All crops 25 



Feed grains 37 



Hay 36 



Oil crops 25 



Food grains 1 —9 



Truck crops 43 



Fruits and nuts 38 



Tobacco 39 



Cotton 13 



.\11 pasture 35 



Total farm output 34 



1 Decrease due to present excess production. 



supply and during the 1930's when farm income 

 was low. With the trend toward a higher per- 

 centage of animal products in the diet (as personal 

 income goes up) it appears reasonable to expect 

 that the quantity of buildings required to shelter 

 animals and feed will increase and that the rate 



Table 236. — Estimated volume oj construction oj newjarm service buildings and of maintenance and repairs 



oj such buildings, 1,915-54 



[In million dollars at 1953 prices] 



Year 



Total 



New 

 buildings ' 



Mainte- 

 nance and 

 repair ^ 



Year 



Total 



New 

 buildings ' 



Mainte- 

 nance and 

 repair ' 



1915 -- 



1,030 

 1, 113 

 1, 160 

 992 

 1,096 

 929 

 607 

 716 

 802 

 756 

 751 

 733 

 827 

 816 

 813 

 563 

 391 

 227 

 316 

 355 



457 

 565 

 699 

 642 

 764 

 546 

 310 

 366 

 411 

 385 

 390 

 370 

 453 

 411 

 374 

 209 

 106 

 41 

 64 

 85 



573 

 548 

 461 

 350 

 332 

 383 

 297 

 350 

 391 

 371 

 361 

 363 

 374 

 405 

 439 

 354 

 285 

 186 

 252 

 270 



1935 



596 



633 



733 



678 



808 



772 



878 



674 



629 



512 



426 



933 



1,376 



1, 395 



1,379 



1,487 



1, 508 



1, 525 



1, 380 



1, 245 



184 

 239 

 285 

 249 

 290 

 258 

 313 

 269 

 314 

 307 

 277 

 670 

 889 

 918 

 922 

 995 

 1,007 

 1,019 

 922 

 832 



412 



1916. 



1936 - - 



394 



1917 



1937- -- - - 



448 



1918- _ 



1938 



429 



1919 - ._. 



1939. _- ... 



518 



1920 



1940 - 



514 



1921. 



1941 



565 



1922 .-.-..-.- 



1942. ...... 



405 



1923 



1943 



315 



1924. . . 



1944. ... 



205 



1925 - 



1945. .... 



149 



1926 



1946 



263 



1927 .- -- 



1947 



1948 



487 



1928 - 



477 



1929 



1949- 



457 



1930 



1931 



1950 



1951 



1952 



492 

 501 



1932. .. ._ 



506 



1933 



1934 



1953 



1954 



458 

 413 



' Based on estimates by Agricultural Marketing Service, 

 U. S. Department of Agriculture, and published in U. S. 

 Department of Commerce and U. S. Department of Labor 

 Construction Volume and Costs, 191.5-1954- Washington, 

 D. C. 1956. Estimate in dollars at 1947-49 prices con- 

 verted to dollars at 1953 prices. 



- Same source cited in footnote 1. Estimates in 

 dollars at year-by-year prices converted to dollars at 1953 

 prices by use of index of construction cost of new farm 

 service buildings. 



