Fruit tree red spider mite is an important secondary pest of apple which is much more troublesome if its key natural enemy, the orchard predatory mite Typhlodromus pyri , is not present. Fruit tree red spider mite is an infrequent pest of …
Also a frequent pest of plum and sometimes cherry. Also occurs on currants, gooseberry, cane fruits, walnut and many wild hosts e.g. Malus , Prunus , Sorbus …
Apple varieties vary considerably in their susceptibility to fruit tree red spider mite. Discovery, Worcester Pearmain and Gala are highly susceptible and are more frequently infested. Cox and Bramley are moderately …
Common and widely distributed and present at least at low levels in most apple orchards. …
Adult female Body oval, about 0.4 mm long, strongly convex and a dark red colour. The body is furnished with long setae arising from light coloured pinacula. These whitish spots at the base of the setae are diagnostic for this species. Adult male Similar …
Adults and nymphs have needle-like mouth-parts which they use to suck the sap from the surface cells of leaves and, sometimes, young developing fruitlets. The cells, which have their contents drained, are whitish in colour, causing a light speckling of …
If the orchard predatory mite Typhlodromus pyri is established and there is a stable equilibrium between the predator and its prey, detailed monitoring of red spider mite populations is not necessary. It is prudent to keep an eye out for leaf damage on …
Forecasting methods for fruit tree red spider mite suitable for use by growers have not been developed. However, population increase can be very rapid in hot weather and bronzing damage to the undersides of leaves can intensify …
With the exception of spirotetramat, chemicals that are used for control of mites on apple are not systemic. Higher volume spray applications to give good cover are needed to get the best results. Acequinocyl (Kanemite), clofentezine (Apollo), …
Young trees from the nursery used to plant new orchards are often infested with apple rust mite and/or fruit tree red spider mite and do not have established populations of the orchard predatory mite Typhlodromus pyri . Damage by fruit tree red spider …
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