Articles
STUDIES ON BIO-ECOLOGY OF MANGO SHOOT GALL PSYLLID (APSYLLA CISTELLATA BUCKTON) AND ITS MANAGEMENT
Article number
992_57
Pages
467 – 474
Language
English
Abstract
The study had been taken up in West Bengal, India during 2004-2007 regarding the biology, population dynamics, varietal preference, causes of gall forma-tion and management of Apsylla cistellata Buckton on mango.
The pest is a univoltine species.
Incubation and nymphal period of the insect lasted for 160-165 days and six months respectively.
Eggs had been inserted by puncturing the tissue along both sides of the midrib alternatively, on the dorsal surface of the leaf in quick succession.
First instar nymphs remained in the site of egg laying and the second instar after emergence from the egg laying site got inside the galls and passed whole of the nymphal stages there.
In the field, on an average 54.4-79.1 eggs were recorded on a single leaf.
Gall formation started on leaf axil and apical bud during end of August to the first week of September and emergence of adults from the galls could be recorded from the last week of February, which continued up to third week of March.
Cultivars Ranipasand and Gulabkhas were found to be more susceptible than Bombai and Langra. Sugar, phenol and tryptophan contents of the twigs of the plants varied significantly over season or stage of the infestation.
The deviation from the normal pattern of seasonal variation of these compounds in the affected twigs were due to interaction of the insect with the plant tissues or organs.
Pruning at 30 cm had been found to be most effective in managing the psyllid gall.
Spraying of monocrotophos at 0.05%, imidacloprid at 0.006% and quinalphos at 0.05% gave effective control to A. cistellata.
The pest is a univoltine species.
Incubation and nymphal period of the insect lasted for 160-165 days and six months respectively.
Eggs had been inserted by puncturing the tissue along both sides of the midrib alternatively, on the dorsal surface of the leaf in quick succession.
First instar nymphs remained in the site of egg laying and the second instar after emergence from the egg laying site got inside the galls and passed whole of the nymphal stages there.
In the field, on an average 54.4-79.1 eggs were recorded on a single leaf.
Gall formation started on leaf axil and apical bud during end of August to the first week of September and emergence of adults from the galls could be recorded from the last week of February, which continued up to third week of March.
Cultivars Ranipasand and Gulabkhas were found to be more susceptible than Bombai and Langra. Sugar, phenol and tryptophan contents of the twigs of the plants varied significantly over season or stage of the infestation.
The deviation from the normal pattern of seasonal variation of these compounds in the affected twigs were due to interaction of the insect with the plant tissues or organs.
Pruning at 30 cm had been found to be most effective in managing the psyllid gall.
Spraying of monocrotophos at 0.05%, imidacloprid at 0.006% and quinalphos at 0.05% gave effective control to A. cistellata.
Publication
Authors
S. Jha, G. Samui, S. Mondal, A. Hasan
Keywords
bio-ecology, shoot gall psyllid, management
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