The Philippines, 1960 - Here, at the Guinobatan Experimental Station located in the heart of the ?adang-kadan" infested area, Dr. R. Baltazar, a Philippine plant virologist, inspects one of the inoculation cages where insects suspected as carriers of ?adang-kadang" are made to feed on enclosed plants. The Philippine coconut industry is one of the country's most important sources of income. With the assistance of the Food and Agriculture Organization of the United Nations (FAO), the Government is fighting a vigorous battle against ?adang-kadang", a disease that has already killed some 10 million trees.