SAN FRANCISCO (UP) - Dr. Paul S. Taylor, professor of economics at the University of California, told a special conference on racial relations that returning Japanese-Americans will not threaten the economic security of west coast farmers.

Taylor presented what he called "four facts against four fancies" as follows:

"1. Japanese-American farm people do not 'breed like rabbits'. . . their birth rate is insufficient to balance mortality and emigration.

"2. Farm laborers of Japanese ancestry are not a competitive threat to other farm labor. . . their employment will afford some relief to the taxpayers because fewer Mexican nationals need to imported at government expense.

"3. Competition from Japanese-American farmers does not threaten other farmers. . . between 1920 and 1940 the percentage of Japanese-American to all other coast farms dropped by more than one-seventh; their average acreage dropped from 65 to 42.2 and the value of their farms fell by more than one-half.

"4. Unpaid family labor does not give Japanese-American farmers a great competitive advantage. . . prior to the evacuation there were only 4832 such unpaid laborers on the Pacific coast, or about one for every 57 farms in the region."

J.S. McFadden, president of the California State Board of Agriculture, presided over the session which was attended by representatives of more than a score of organizations. Other speakers included Harry Osaki, a Japanese-American farmer of Fowler, Cal.; Dave Davidson, chairman, California State War board; Willard Ellis, president, Federal Land Bank of Berkeley; Frank Buckner, associate state supervisor, emergency farm labor program, and Ralph W. Hollenberg, regional director, Farm Security administration."