Excerpt: The outlook for the utilization of agricultural land in the United States is affected primarily by four groups of factors: I. Extent of the land resources and rate of depletion; II. Technical progress in utilization of these resources and trends in agricultural production; III. Population trends, changes in diet, exports, and other factors that affect the consumption of farm products; IV. Land resources of foreign countries and competition by agricultural products from these countries, both in the United States and abroad. Each of these four groups of factors is worthy of many days' discussion, and to give the essential facts in an hour's talk requires that the statements be brief and broad, and some may seem bold.