Brief reports of reserch at your experiment station at Iowa State University. This month's report describes research on crop yield differences; strawberry breeding; management of marsh vegetation; pheasant diseases; and feedlot shelters.

Products from 1 out of every 4 U.S. crop acres now move overseas. Long-run prospects for larger commercial exports affected greatly by the rate of economic progress and per capita income growth in less developed countries.

Current land diversion programs only extend the commercial farm problem into the future. A long-run program of permanent land withdrawal with appropriate compensation could solve the surplus problem and save yearly treasury outlays.

Chemicals important to efficient livestock production, but public concern over possible chemical residues is on the increase. Here is background on the residue problem including consumer protection and withdrawal regulations.