APPLICATION OF SOME ENVIRONMENTAL SAFE METHODS FOR POPULATION MANAGEMENT OF COMMON LAND SNAILS IN THE NEWLY RECLAIMED AREAS IN EGYPT

Abstract

Several experiments under laboratory and field conditions had been conducted to study safety methods for population management of common land snails in newly reclaimed lands at El-Hamool and Balteem, Kafr El-Sheikh Governorate. The obtained results could be summarized as follows: 1- Monacha cantiana, Succinea putris, Theba pisana, Cochlicella acuta, Eobania vermiculata and Oxychilus allivaus were recorded at El­ Hamool, Balteem, Sakha and Meseer on several hosts. 2- The highest damage of Monacha cantiana and Thebapisana were recorded in guava and orange leaves and cucumber fruits, while Monacha cantiana and Succinea putris caused great damage in clover. 3- Egyptian clover was most preferable food for M cantiana, while lettuce was preferable food for T pisano and carrot roots was the most preferable for S. putris . On the other hand bran was a preferable bait for the three tested snails . 4- Traps as mechanical method with wet saching +sugar cane were the most effective trap, number of snails sheltered under it reached 96.6 snails/n/ , while plastic sheets trapped 12.2 snails/m2 • 5- Ploughing process as agriculture method decreased individuals ofM cantiana and C. acuta after one day post treatment and reduction percentage increased after 28 days post treatment . 6- The microbial compounds as Agrein, Dipel 2x, Vertemic and Biofly used as spray and bait were estimated against M cantiana, S. putris, C. acuta and T pisano under laboratory and field conditions .

The obtained results revealed that Agrein was the most effective at high concentration followed by Biofly , while Dipel 2x was the least effective.