Survey, Damage and Losses Caused By Land Snails on Certain Crops At Dakahlia, Sharkia and Demiatta Governorates.

• Zedan,H.A., Mortada, M.M. And *Awad, M.H.
• Plant Protection Research Institute, Mansoura Branch, ARC
• *Plant Protection Research Institute, El-Serw, Agric. Res. Station.
• The Third International Conference onIPM Role in Integrated Crop management and Impacts on Environment and Agricultural Products. 26-29 November 2005, Giza, Egypt.

Abstract

Field trials were carried out to Survey land snails and slugs as well as damage and losses estimation caused by Monacha cartusiana , Eobania vermiculata and Cepaea nemoralis on some vegetable crops and fruit trees in Dakahlia, Sharkia and Demiatta Governorates, respectively. During the period from October, 2003 to September, 2004 seasons. Results revealed that thirteen land snail and slug species (nine snail and four slug species ) were found in Dakahlia Governorate. While eight species ( six snail and two slug species were surveyed in Sharkia Governorate. In addition to, nine species (seven snails and two slug species) were found in Demmiatta Governorate. The mean reduction caused by M. cartusiana in fresh weight of shoots for three cutting of Egyptian clover were 38.22, 33.59, 35.12 % and the general mean loss was 35.65 %. While losses percentages were estimated with 10.9, 14.2 and 17.25 % in leafs of mandarin, cabbage and lettuce crops, respectively. Also, M. cartusiana snail was responsible the damage in cucumber fruit with 6 % . E. vermiculata and Cepaea nemoralis caused damaged to leafs of orange and guava trees with 14.7 and 9.6 %.