EPIDEMIC DEVELOPMENT OF ACREMONIUM WILT OF GUAVA IN THE PHILIPPINES

摘要

The temporal and spatial increase of Acremonium wilt of guava was documented in a commercial production system. Data suggested that the disease normally occurred during the second year and progressed very rapidly during the succeeding years of production with an estimated infection rate of 0.288 per unit per year. The high destructive potential of the disease prompted farmers to discontinue the production of guava as early as the 5th year of production. Spatial spread of Acremonium wilt occurred in random foci and the disease apparently spread in a regular manner along rows. This indicated that the rapid spread of the disease within the field was most likely mediated by frequent pruning operations.The study had demonstrated the destructive potential of Acremonium wilt to curtail the lucrative production of guava in the Philippines.