Scatella stagnalis Fallen (Diptera: Ephydridae): towards IPM in protected lettuce crops | [Scatella stagnalis Fallen (Diptera: Ephydridae): vers une lutte intégrée dans les cultures de laitue sous serre]
1999
Jacobson, R.J. ((Horticultural Research International, Cawood (United Kingdom))) | Croft, P. | Fenlon, J.
The development of IPM against the major pests of protected lettuce will eliminate routine use of insecticides against aphids and caterpillars but allow other pests such as Scatella stagnalis (shore flies) to survive. Scatella stagnalis do not damage lettuces directly but their presence on foliage at harvest may result in the rejection of whole batches of produce. Both adults and larvae feed on green algae growing on the soil surface, particularly in non-cropped areas such as paths in growing beds and around the periphery of the crop. The growth of algae and development of flies may be partially controlled by minimising the quantity of water applied but additional action is often required in the insect's main feeding and breeding sites. These studies demonstrated that IPM of S. stagnalis may be based upon the reduction of the insect's food source by applying the algaecide, quinoclamine, in non-cropped areas of the glasshouse. In more difficult situations, the treatment may be supplemented by applications of the insect growth regulator, teflubenzuron, or the entomopathogenic fungus, Beauveria bassiana. Physical removal by suction of adult flies from lettuce heads just before harvest can also contribute to the overall control of S. stagnalis
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Este registro bibliográfico ha sido proporcionado por Centre de coopération internationale en recherche agronomique pour le développement