Bioenvironmental and Radiological-Safety Feasibility Studies, Atlantic-Pacific Interoceanic Canal; Phase 1 - Final Report: Agricultural Ecology

40 pages. References. Maps. Oversized volume, measuring 11 inches by 8-1/2 inches. Name of previous owner stamped on front cover. Topics covered include Systems of Agriculture, Information from Comparable Regions on Similar Agricultural Systems, Analytical Procedure, Special Features of Agricultural Systems That May Influence Nuclide Uptake and Concentration, References, and Plans for Phase II Studies. Two maps (each measuring 14 inches by 20 inches) are included in a pocket at the end of the volume--Map 1 shows cultivated land in Route 17 Study Area (from 1962 Air Photos); Map 2 shows cultivated land in Route 256 Study Area (from Air Photos,1957, 1961, and 1962). Hugh Popenoe entered the University of Florida where he studied for his Ph.D. on the effects of shifting cultivation on basic soil properties near Lake Isabal in Guatemala. He spent the rest of his professional life teaching for the University as a professor in Soils and Water Management, Botany, Agronomy, and Geography and being involved in various international activities. After directing the Caribbean Research Program, he was appointed Director of the Center for Tropical Agriculture in 1965; Director of International Programs in Agriculture in 1966. The dominant agricultural system in the study areas (Maps 1 and 2) is a subsistence agriculture extensively employed throughout the tropics and generally known as "shifting cultivation". The general practice consists of felling most of the trees and burning them after a drying period.…