The first account that it had become a major pest was recorded in 1986 when about 300 hectares of irrigated rice farms in Region 2 (Cagayan Valley) were heavily damaged.
Ang unang pangyayari na naging dahilan kaya ito napabilang na peste ay naitala noong taong 1986 ng may 300 ha. palayang may patubig sa Region 2 (Cagayan Valley) ang lubhang napinsala.