Fungus Gnats
Raw potato slices can be used to track Fungus Gnat populations. Place on the growing media surface for one hour and record the number of gnat larvae on them to detect change in population. Once detected, prompt action is vital. Apply Stratiolalaps (Hypoaspis) followed in one week by an application of Sf or Hb nematodes. Nematodes kill fungus gnat larvae and supplement Hypoaspis’ food supply helping them to spread. Introduction of Atheta can be effective and a preventative measure if the soil is loose. Gnatrol (Bti) is an alternative to beneficials, but is of no use for prevention at low pest levels. If fungus gnat populations tend to explode, try using a little less coir or other undecomposed hygroscopic organic matter in the soil mix. Sticky traps have been shown to be an effective tool.
Stratiolaelaps simitus / Hypoaspis miles is a predatory mite that eats larva of fungus gnat. Also feeds on western flower thrips (WFT) pupae and springtail (especially in house plants). Lives in top layer of soil, feeds on small, soil-inhabiting insects, mites and all stages of springtails. Can adapt to many different growth media and capillary mats. No diapause: can be used year round. Active at temps > 54° F . Can survive low pest densities. Helps clean up greenhouses and mushroom production, as well as controlling mites on tarantulas, lizards and bees. Should not be applied to soil that has been treated with lime or copper sulfate mixtures. Atheta is a predator of Stratiolaelaps simitus; Stratiolaelaps simitus eats nematodes, good and bad. 10-13 L per acre OR 50 mites per 10 sq ft. Twice monthly, 2-5 times overall. Most effective applied prior to heavy infestations and for end of crop clean-up.
Shipped Wednesday, order by previous Friday