Evaluation of some environmentally safe methods for controlling common land snail species at Kafr El-Sheikh governorate

الملخص EN

Several experiment under field condition were conducted to study some safe methods for population management of common land snail species on guava trees .During 2017 and 2018 land snail species were surveyed in guava orchard and some cultural and mechanical methods were evaluated against land snails in Sedy Salem district, Kafr El-Sheikh Governorate, Monacha cantiana (Montague) (Gastropoda: Hygromiidae) and Cochlicella acuta (Müller) (Gastropoda: Cochlicellidae) snails a dominant species on guava orchard and M.cantiana recorded the highest density then C.

acuta .Through spring M.cantiana recorded 281.0 and 319.0 during while C.

acuta recorded lowest density 171.0 and 202.0 animal during winter in two seasons.

Controlling these species under field conditions by using some safety methods to avoid chemical control by applied soil ploughing process as agricultural control and using barriers as attractive baits and circles lime as a mechanical control.

Results revealed that , soil ploughing process gave the highest reduction percentages where recorded decreasing in population from first day of application (82.7 and 70.6% ) ,( 82.2 and 72.0 %) , (81.4 and 47.4%) ,(58.9 and 46.4%) and (55.7 and 29.3% ) for M .

cantiana and C.

acuta and (69.0 and 32.6 %) , (68.1 and 43.1%) ,(62,1and 44.0 %) and (63.6 and 47.0 %) and (53.9 and39.0 %) during two season 2017 and 2018.

The applied of certain barriers as attractive baits and circles lime was more effective in reducing population where gave general mean(62.8 and 47.4 % ) for circle lime and ( 44.2 and 47,6 %) for attractive baits during two seasons , respectively .

Generally, it could be recommended that soil ploughing processes as cultural control method gave high reduction in population density of land snail pests.