Trouble with thrips? Check out IR-4 Project’s newest ornamentals report on the efficacy of biological and chemical tools used to manage the little beasts, including chilli thrips (Scirtothrips dorsalis), gladiolus thrips (Thrips simplex), privet thrips (Dendrothrips ornatus), weeping fig thrips (Gynaikothrips uzeli) and western flower thrips (Frankliniella occidentalis).

The report details testing of 81 products representing 53 different active ingredients (the study ran from 2005 through 2017); according to the IR-4, “Thrips remain an important threat for several reasons: 1) the damage thrips cause to ornamental horticulture plants, decreasing the value of the infested crops; 2) the tospoviruses (tomato spotted wilt, impatiens necrotic ringspot) they can vector; 3) the newly arrived invasive species which impact at least 250 different ornamental horticulture species; and 4) growers lack the ability to rotate among three to four different modes of actions to effectively manage resistance development in the thrips populations they must control to maintain economic viability.”