The lab engages in disease characterization, epidemiology and control measures of fungal, viral and bacterial pathogens of sweet potato, citrus, lychee, longan, pineapple, mango, and yam. The research activities include: 1) hot water treatment to control postharvest diseases of tropical fruits; 2) identification, diagnosis and control measures of fruit rot diseases of tropical fruit trees; 3) lychee downy blight and anthracnose diseases; 4) strategies to control sweet potato foot rot disease; 5) fruit diseases of avocado, pineapple and papaya; 6) collection, conservation and utilization of beneficial microbial Trichoderma spp.; 7) potato diseases; 8) viral diseases of sweet potato; 9) testing of disease-free seedlings of sweet potato, citrus and Anthurium; 10) mass propagation techniques for disease-free yam seedlings; and 11) disease and insect pest diagnosis services.