In 1998-1999, Andi Trisyono (PhD, University of Missouri) and Michael Chippendale collaborated on a research project about insect resistance management at the University of Missouri. The study provided reference data for monitoring the level of susceptibility to Bacillus thuringiensis (Bt) of field-collected populations of the southwestern corn borer, Diatraea grandiosella: Trisyono, Y. A. & G. M. Chippendale. 2002. Susceptibility of field-collected populations of the southwestern corn borer, Diatraea grandiosella, to Bacillus thuringiensis. Pest Manag. Sci. 58:1022-1028.

Corn (maize) plants that express a protein from Bacillus thuringiensis provide protection to the plants from insect feeding damage. To maintain the effectiveness of the Bt trait it is important to implement resistance management strategies that counter the development of resistance in target insects leading to a loss of effectiveness of the trait.

Andi Trisyono is a Professor of Entomology at the Department of Crop Protection in the Faculty of Agriculture at the Universitas Gadjah Mada in Yogyakarta, Indonesia. Now, 19 years after the publication of this study, we are using these photos of the two of us alongside corn fields in Missouri and Indonesia to highlight the importance of insect resistance management studies.