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New Pesticides for Greenhouses

April 11, 2001

Pylon. Pylon miticide–insecticide, distributed by Olympic Horticultural Products, recently received approval for use in greenhouses. Pylon is in a new chemical class referred to as pyrroles. The active ingredient is chlorfenapyr. Pylon works as a contact and ingestion miticide by interrupting energy production. The material has translaminar activity. Pylon is labeled for mites (two-spotted spider mite, broad mite, and cyclamen mite), caterpillars, and fungus gnats. Pylon can be applied with conventional as well as low-volume application equipment. The rate range is 2.0 to 5.0 fl oz/100 gallons. The reentry interval (REI) is 12 hours. Pylon cannot be applied to vegetable transplants, and it is suggested to avoid applying it to plants in bloom. In addition, do not apply Pylon more than two times during a crop cycle.

Akari. Akari miticide from SePRO Corporation has been approved by the EPA for use in greenhouses. The active ingredient is fenpyroximate, in the phenoxypyrazole chemical family. Akari works by contact; it has no translaminar activity, which means thorough coverage is essential. The material paralyzes mites by blocking respiration. Akari is labeled for two-spotted spider mite, as well as broad, cyclamen, and eriophyid mite. It has activity on the larvae, nymphs, and adults. Akari provides quick knockdown of adults and has 21 to 28 days of residual activity.

The rate range is 16.0 to 24.0 oz/100 gallons. Akari has a 12-hour REI. It is recommended that only two applications per growing season or crop cycle be made. Research at the University of Illinois has demonstrated that Akari is effective on whiteflies; however, they are not on the current label.

Marathon II. Marathon II is a new formulation of imidacloprid that can be applied directly to foliage. It has 14 to 21 days of residual activity, less than the granular and drench applications. Marathon II has activity on aphids, whiteflies, and mealybugs. It can be used on greenhouse-grown vegetable transplants. Marathon II has a 12-hour REI.

Author: Raymond A. Cloyd


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