Integrated pest management of the cottony cusion scale Icerya purchasi in the west of Mazandaran province
2011
Halljisani, Mohamadfazel | Aghajanzadeh, Sirous | Gholamian, Esmaiil
The cottony cusion scale, Icerya purchasi, is one of the most important pest of citrus orchards in Mazandaran and Guilan provinces. The control measures of pest was studied in natural conditions in the west of Mazandaran province during 2008-2010. The complete randomized block design was carried out, with 11 treatments and 3 replications. Each treatment consists of two orange trees 20 years old. . Number of I. purchasi on samples has been recorded by counting live scales. One sampling was done before application of first treatment, in February and the second ones after application of all treatments, in August. The treatments including winter pruning, ladybird releasing, summer spraying(Dorsban 2 per 1000 , emulsified oil(5 per 1000),winter pruning- ladybird releasing and control .The results revealed that ,there was significant difference between treatments at the level of 5% (p0.05). The results of compound variance analysis indicated that treatment of winter pruning-ladybird releasing- spraying had the best effective on I. purchasi control. The least effective on cottony cusion scale control observed in winter pruning treatment. Therefore the integrated control is the best method for cottony cusion scale control. with dorsban(2 per 1000) and emulsified oil(5 per 1000) on the peak time of first nymphal scales. Also, use of winter pruning had the least effective on cottony cusion scale control.
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