Entomological diagnostic research at the Departement of Crop Protection in 1999
1999
Casteels, H. | Witters, J. (Centrum voor Landbouwkundige Onderzoek, Gent (Belgium). Dept. of Crop Protection)
One of the tasks of the Section Entomology is scientific research, besides we also identify arthropod pests occurring in different samples. Based on their origin these samples were grouped into four categories: samples for quarantine organisms, samples of imported stored products, samples of growers and samples sent by private persons. We received 1244 samples for investigation on quarantine organisms. Thrips palmi was found on orchids imported from Thailand, Bemisia tabaci was found on Euphorbia. Thirty-two samples of varied stored products and origin were checked on the occurrence of insect pests. The cocoa beans represented 87.5/ of the stored product samples; Ahasverus advena, Cryptolestes ferrugineus and Carpophilus spp. were found very regularly (22/), followed by Psocoptera. We received 185 samples of plant material from growers, 21/ was delivered by the growers personally and 79/ via information services. Most of the problems were caused by mites (spider mites, tarsonemid- and eriophyoid mites), thrips, aphids, scale insects and psyllids. Twenty-six samples of private persons were investigated, both from gardens and domestic environments. Problems in private gardens were mainly caused by aphids, scale insects and grubs (Hoplia philanthus). Tenebrio molitor, Thaumatomyia notata, Monomorium pharaonis and Diplopoda were the most important domestic pests.
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