The Effect of Corn Event MIR162 and the Triple Stacked Hybrid, Bt11 x MIR162 x GA21, on Key Non-Target Organisms of Corn

Authors

• Ireneo L. Lit Jr., Entomology Section, Museum of Natural History and Environmental Biology Division, Institute of Biological Sciences, College of Arts and Sciences, University of the Philippines Los BañosFollow
• Merdelyn T. Caasi-Lit, Entomology Laboratory, Institute of Plant Breeding, College of Agriculture and Food Science, UPLB
• Kristine O. Abenis, Environmental Biology Division, Institute of Biological Sciences, College of Arts and Sciences, University of the Philippines Los Baños (UPLB), College (Los Baños), Laguna, Philippines
• Edwin A. Benigno, Entomology Laboratory, Institute of Plant Breeding, College of Agriculture and Food Science, UPLB; New Era University, College of Agriculture, Pinugay, Baras, Rizal, Philippines

Publication Date

12-1-2025

Abstract

Assessments of environmental risks, especially to non-target organisms, are required before genetically modified plants are approved for commercial production. Incorporated genes or traits, whether as single events or stacked or combined with other traits, are treated separately. In compliance with Philippine regulations, confined field trials were conducted to evaluate possible effects of corn event Maximus MIR162 and triple stacked corn hybrid Bt11 x MIR162 x GA21 on non-target arthropods from August 2011 to January 2012 in Laoac, Pangasinan, and Tampakan, South Cotabato. Visual counts and opportunistic sampling, sweep net sampling, pitfall traps, and sticky traps were used at each sampling period, 25, 40, 55, and 80 days after planting (DAP). There were no consistent trends in the total number of non-target arthropods and other parameters across treatments for both sites. The available data suggest that the event Maximus MIR162 and the triple stacked corn hybrid Bt11 x MIR162 x GA21 have no significant positive or negative effects on key non-target organisms of corn.

Recommended Citation

Lit, Ireneo L. Jr.; Caasi-Lit, Merdelyn T.; Abenis, Kristine O.; and Benigno, Edwin A. (2025) "The Effect of Corn Event MIR162 and the Triple Stacked Hybrid, Bt11 x MIR162 x GA21, on Key Non-Target Organisms of Corn," The Philippine Agricultural Scientist: Vol. 108: No. 5, Article 11.
Available at: https://www.ukdr.uplb.edu.ph/pas/vol108/iss5/11