Couch Mite

Scientific Name: Eriophyes cynodoniensis

Order: Trombidiformes

Description

The immature couch mite is a translucent bodied mite which is invisible to the naked eye at only 0.1-0.15mm in length. As they mature the adult stage is slightly larger with a creamy white elongated abdomen up to 0.2mm long. Infestations of mites are typically identified by the characteristic symptoms of plant injury in the field. Once visible injury has occurred, pest pressure must be considered to be extensive. Infected turf first exhibits a slight yellowing of leaf tips followed by shortening of internodes and leaves, producing a rosetted or tufted growth known as “witches brooming”. Severe infestations result in stand loss, and large dead areas soon become infested with weeds. Damage is usually most severe during hot, dry conditions.

Biology and Lifecycle

Couch mites are active primarily during late spring and summer. Development from egg to adult requires 5-10 days. After eggs hatch, they pass through 2 nymphal instar stages and molt to adults. All life stages live together, protected under the leaf sheath, and often 100-200 mites and eggs can be observed under a single leaf blade. Mites are spread on grass clippings and have been observed hitch-hiking on other turf insects. Dispersal in wind is also common.

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Products to Use Couch Mite

Thumper

Thumper New shot

Thumper is a nematicide & miticide containing the active constituent of 20 g/L abamectin, which acts via contact and ingestion. Thumper has…

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Suprathion 400

Adama suprathionv2

Suprathion 400 EC is an emulsifiable concentrate contact insecticide for the control of Red Scale, Soft Brown Scale, Soft Green Scale,…

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Pennside

pennside

Pennside containing the active constituent 240g/L Diazinon, provides effective control against Argentine Stem Weevil, African Black Beetle, Grass Eating Caterpillars and…

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Higran

Higran

Higran is a preventative or early curative miticide, treating nymph and adult couch grass mites. Ideally, Higran is used as the…

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Agador

agador

Agador Turf Nematicide and Miticide is a unique formulation of the active constituent 20% Abamectin. Agador’s chelated formulation ensures effective protection…

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