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PHYSIOLOGICAL LIMITATIONS ON CROP PRODUCTION UNDER TEMPERATURE AND MOISTURE STRESS Report of a Research Planning Conference / San Jose, Costa Rica November 20-24, 1967 Production Processes Subcommittee u.s. National Committee for Biological Program Division of Biology and National Research Council NATIONAL ACADEMY OF SCIENCES Washington, D.C. 1969
PREFACE Some 30 scientists from countries in the Western Hemisphere met in San Jose, Costa Rica, November 20-24, 1967, under the auspices of the Production Processes Subcommittee of the u.s. National Committee for the International Biological Program. In general, the conference dealt with means of increasing primary food production in the Americas. Specific aspects of this subject were identified for discussion. They were as follows: 1. Limitations on crop production under suboptimal environments, that is, hot, cold, wet, or dry climates and poor soils 2. The intensity of present basic research having to do with these limitations 3. The possibility of initiating international research that would focus on these limitations The San Jos~ conference was a beginning: many problems were clar- ified and some research teams were formed. But attendance would have been greater if more funds for travel had been available, and greater attendance would have made it possible to form more research teams. The Subcommittee hopes that, through distribution of these proceedings, scientists not in attendance at the conference will be encouraged to form additional teams. The Subcommittee wishes to thank the following men for their as- sistance in identifying the problems to be discussed: L. T. Alexander, u.s. Department of Agriculture; c. E. Kellogg, u.s. Department of Agriculture; H. E. Landsburg, Environmental Science Services Adminis- tration; Frank Parker, Agency for International Development; Hilgard O'Reilly Sternberg, University of California; and R. W. Richardson, Jr., Rockefeller Foundation. The abstracts of papers and the reports of the working groups were prepared by the individual speakers and recorders. Their efforts are appreciated. Further acknowledgement is made to those many people and organi- zations that so materially helped in making the San Jose weeting success- ful. These include Dr. Gerardo Budowski and Dr. Ludwig Muller of the Inter-American Institute of Agricultural Sciences and Dr. Rafael L. Rodriguez of the University of Costa Rica. Special recognition is due Jorge Campabadal of the Organization for Tropical Studies, Inc. for his careful attention to the many organizational details involved.
Production Processes Subcommittee E. R. Lemon, Chairman T. c. Byerly c. c. Delwiche R. c. Dugdale N. E. Good P. E. Waggoner P. w. Wilson
