Show kill mediterranean fly by cooling all fruit the department of agriculture now plans to fight the mediterranean fruit fly by coelln cooling fruit to a temperature ot of 28 degrees for five hours followed by holding it tor for about live five days at a temperature of 30 degrees another treatment la is to hold the fruit at degrees for eight hours both the high and low doiy temperatures ars are fatal to the eggs or larvae of the fly it la Is also feasible to attain either cither the maximum or minimum temperatures in the existing practices of handling citrus f fruits |