aphidsAphids are a big problem in the horticultural sector. Through their enormous reproductive capability, aphids can cause severe damage to several crops. Resistance to pesticides is increasing. Important aphids occurring in glasshouses are: the cotton aphid Aphis gossypii, the glasshouse potato aphid Aulacorthum solani, the potato aphid Macrosiphum euphorbiae and the green peach aphid Myzus persicae.


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spidermiteSpider mites are a pest in many crops. Their great reproductive capacity enables them to cause enormous damage in a short period of time. In many protected crops the two spotted spider mite Tetranychus urticae is the most important pest. In field crops, other Tetranychus species can also cause damage.


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caterpillarCaterpillars of several butterfly and moth species cause damage to a variety of crops. The most important species occurring in glasshouses are the green looper (Chrysodeixis eripsoma), the tomato fruitworm (Heliothus zea), the tropical armyworm (Spodoptera litura), tomato stem borer (Symmetrischema tangolia), light brown apple moth / leaf roller (Epiphyas postuitana)

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thripsOnion thrips (Thrips tabaci) and western flower thrips (Frankliniella occidentalis) are a major problem in many protected crops, especially in cucumber.


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mealybugMealybugs cause damage to several crops in the horticultural sector. The most important species occurring in the glasshouse belong to the genera Planococcus and Pseudococcus. Within the Planococcus genus, the citrus mealybug Planococcus citri is a particular problem; several species within the Pseudococcus genus occur in glasshouses.


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whiteflyThe greenhouse whitefly Trialeurodes vaporariorum and the sweet potato whitefly Bemisia tabaci are major pests of many vegetable and ornamental crops. Due to its high resistance to most insecticides, the tobacco whitefly poses a particular threat to many crops.


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sciaridFungus gnats(Sciaridae) are a difficult pest, especially in young plant material. They can cause damage to seedlings,rootstock and cuttings of many plant specises. Sciarid filies are often found in moist, organic environments.


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