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Macrocheles robustulus

Macrocheles robustulus is a medium-sized predatory mite (about 1 mm). It feeds on different, in the top layer of the soil living, organisms such as eggs, larvae and pupae of sciarid and thrips. 

Life cycle and relative effectiveness 

Adults lay their eggs in the ground. They are able to produce 70 – 90 eggs and feed themselves with young larvae of sciarid and thrips. This predatory mite can survive cold mild winters, but will became inactive at a soil temperature below 10ºC. Macrocheles robustulus lives in and on the top layer of the soil and is not present in the plant itself. Development from egg to adult will take approximately 10 to 13 days at 25ºC. 

Application and dose 

Macrocheles robustulus is most active in moisture soil with a loose structure. Dose is between 50 and 500 predatory mites per square meters, depending on the pest infestation, crop and cultivation time. Use, in a preventive way, is possible because the predatory mite can survive some weeks without prey. Population development without prey will become significantly slow. 

Storage and handling 

Macrocheles robustulus supplied in tubes, containing 50.000 predatory mites. Keep the tubes horizontally, in darkness, at a temperature between 10°C – 15°C. Maximum storage time of two days

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