Population density of certain land snail and slug species and their damage to some fields and vegetable crops [electronic resource].

Includes reference.

The population density and damage percentages of the land snail Succinea Putris and Succinea elgans and land slug Limax maximus and Deroceras reticulatum were estimated to some fields and Vegetable crops at Dumyat governorate during 2004 to 2006. The results showed that the lowest population densities were recorded in October, Nonember and December on clover , wheat, lettuce, cabbage and potato, while the population of the four snail and slug species increased gradually in January, February and March. The highest figures of the population density of the tested snails and slugs was observed during April and May due to the suitable climatic conditions ( temperture 18.7 to 20.6 ºC & relative humidity 50.7-51.3%) during this period. Also, the damage of both snail and slug for cabbage, lettuce, clover and wheat after three months from date of the plantation was more than in the second month and was lowest at the first month.

Summary in Arabic.

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