Emissions from burning the residue following grass-seed harvest have been determined by both field and laboratory studies. Field studies have been conducted by Oregon State University engineers on actual grass plots. The laboratory studies were conducted by scientists at the University of California at Riverside on grass samples collected from the fields in on. The results of these studies are reported in the Journal of the Pollution Control Association, Vol. 16, No. 9, September 1966, in an article entitled, 'A Study of Field Burning Under Varying Environmental Conditions,' by Meland and Boubel and in a paper presented to the 61st Annual Meeting of the Air Pollution Control Association at St. Paul, Minnesota, entitled, 'Emissions from Eurning Grass Stubble and Straw,' by Boubel, Danley, and Schuck.