Updates from recently conducted detection survey for fall armyworm, Spodoptera frugiperda (J.E. Smith) in Region 2 [Cagayan Valley], Philippines
2019
Navasero, M.V. | Magsino, G.L.
Detection of the fall armyworm (FAW), Spodoptera frugiperda (J.E. Smith), in Taiwan was reported on June 10, 2019, and because of its proximity to the Philippines, this prompted the local and national concerned agencies to intensify their detection and surveillance activities. Initial effort was focused in Cagayan Valley, being the largest corn-producing region in the country. The Regional Crop Protection Center 2, through the Bureau of Plant Industry, sent to the National Crop Protection Center, UPLB [University of the Philippines Los Baños, for identification, seven noctuid larvae with collection date June 7, 2019 from a Bt corn field in Piat, Cagayan [Philippines]. One of the larvae was positively identified as that of FAW. A picture of another larva from the same site conspicuously showing the distinctive features of FAW was also provided. Immediate follows-up detection survey failed to produce additional specimens of FAW. Since Bt corn was found still working against FAW in new territories of invasion, those found in Piat could have been from non-Bt corn refuge. Bt-corn accounts for about 50% of total plantings of corn in the country and Region 2 has the highest 90% which could have slowed down its spread. Detection surveys focusing on non-Bt corn should be done especially in areas with lower percentages of Bt-corn plantings.
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