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Journals and Conferences
A description is given of the damage to leaves of fruit trees caused by the leaf minerLithocolletis corylifoliella. In some orchards in Dutch Limburg as much as 20% of the foliage was damaged.
The Apple-clearwing which is found in whole Europe, increases in importance in the last few years. The cater-pillars of the Apple-clearwing live unde the bark in the wood of as well old as young fruittrees. Investigations in 1976 and 1977 proved that a chemical control of the Apple-clearwing can be executed successfully either during the flightperiod of… (More)
In the Netherlands, the polyphagous larvae ofCnephasia longana Haworth occur locally on apple and pear trees, damaging the growing shoot-tips. They are also observed on red currant bushes, strawberry, beet, clover, lucerne and creeping thistle. A useful degree of control has been obtained with organo-phosphorus sprays.
Incidence of Messa hortulana (Klug) (Hym., Tenthredinidae) in poplar windbreaks in the Netherlands In the southwest of the Netherlands at Philippine (province of Zeeland) in one orchardMessa hortulana had become a pest in recent years, increasingly damaging the poplar windbreak. So the fruitgrower concerned carried out a more and more intensive control… (More)
The Currant Clearwing Moth is a serious pest of currant and other soft fruit shrubs in the Netherlands intensifying damages since conditions of cultivating have been changed about ten years ago. Studies were made on bionomy and chemical control of this pest. Bait traps proved to be useful for recording the flight as well the quota of females but not for… (More)