Báo cáo nghiên cứu khoa học " SPYLLID " pptx

SPYLLID SPYLLID Damage Damage   Both adults and nymphs of Both adults and nymphs of psyllid psyllid attack plant by attack plant by sucking cell sap of the young shoots. Damage sucking cell sap of the young shoots. Damage leaves become curly or distorted. Infested leaves leaves become curly or distorted. Infested leaves and fruits may drop prematurely. and fruits may drop prematurely.   Psyllid Psyllid ’ ’ sucking sucking can transmit the bacteria cause can transmit the bacteria cause Greening Disease or Greening Disease or Huanglongbing Huanglongbing ” ” ( ( Liberobacter Liberobacter asiaticus asiaticus ) )   A heavy sooty mold deposit can later develop on A heavy sooty mold deposit can later develop on the honeydew of the the honeydew of the psyllids psyllids . . The dynamic of The dynamic of Psyllid Psyllid population population in year in South of Viet Nam in year in South of Viet Nam   There is a relation closely between There is a relation closely between Psyllid Psyllid population and number of young shoots. Most population and number of young shoots. Most abundant population after every growth flush . abundant population after every growth flush . However, the However, the psyllid psyllid population also reduce population also reduce when rainfall is too high when rainfall is too high   Using yellow bait to monitor the presence of Using yellow bait to monitor the presence of adult adult psyllid psyllid in the orchard in the orchard Natural enemies of insect pest Natural enemies of insect pest on citrus on citrus The spotted ladybird ( The spotted ladybird ( Hamonia Hamonia conformis conformis ) ) feeding on aphids feeding on aphids Larva Adult Ladybird Ladybird Coccinella Coccinella sp. sp. Adult Larva Natural enemies are important in Natural enemies are important in controlling citrus aphids controlling citrus aphids – – Parasites Parasites Lipolexis Lipolexis scutellaris scutellaris Mackauer Mackauer – – Braconidae Braconidae Parablatticida Parablatticida sp. sp. – – Encyrtidae Encyrtidae Aphelinus Aphelinus gossypii gossypii Timbertake Timbertake – – Aphelinidae Aphelinidae Wasp parasites in citrus Wasp parasites in citrus maelybug maelybug ( ( Planococcus Planococcus citri citri ) ) Wasp ( Wasp ( Comperiella Comperiella bifasciata bifasciata ) parasites ) parasites of citrus red scale of citrus red scale Wasps parasites of larva Wasps parasites of larva Psyllids Psyllids (Diaphorinacitri (Diaphorinacitri ) )   Tamarixia Tamarixia radiata radiata   Diaphorencytus Diaphorencytus aligarhensis aligarhensis . SPYLLID SPYLLID Damage Damage   Both adults and nymphs of Both adults and nymphs of psyllid psyllid attack