Why have we been caught off-guard by armyworms?

Editor, RE: “Joint bid to save farmers from crop ravaging armyworms” (The New Times, April 19).
Rwanda Defence Forces and Rwanda National Police have joined the fight against Fall Army Worms to protect farmers across the country. (File)
Rwanda Defence Forces and Rwanda National Police have joined the fight against Fall Army Worms to protect farmers across the country. (File)
Times Reporter