Diaphorina citri Kuwayama on Citrus

The citrus psyllid, Diaphorina citri Kuwayama, is the most important pest of citrus worldwide because it serves as a vector of Candidatus Liberibacter species that cause citrus greening disease. The nymphs and adults suck cell sap causing curling of leaves, defoliation, flower drop and death of branches from t to downwards which is known as die back. The peak population found usually in March-April and August-September.

17p nguathienthan4 21-04-2020 6 2   Download

The present experiment was commenced under the laboratory condition to studythe biological parameters of Diaphorina citri Kuwayama. The psyllid species, Diaphorina citri is potentially the most dangerous at the present time because it serves as vector for Citrus Huanlongbing which is the most serious disease of citrus in the world. Diaphorina citriis the only known vector of Huanglong-bing- a phloem-limited bacterial disease of international importance. Adults and nymphs suck sap from the phloem of tender shoots and buds, whilst adults also feed on the phloem of mature leaves.

9p caygaocaolon4 04-04-2020 24 2   Download

Seasonal incidence of blackfly, Aleurocanthus woglumi Ashby and citrus psyllids Diaphorina citri Kuwayama were studied on acid lime during September 2017 to August 2018. The influence of weather factors on population fluctuation of sucking pests in acid lime ecosystem was recorded at weekly intervals in fixed location. The study revealed that the occurrence of sucking pests was noticed throughout the study period 36th (1st week of September) to 35th (4th week of August) standard weeks. The population of D. citri attained its first peak during 19th standard week (1stweek of May) with 23.

8p quenchua2 16-12-2019 8 0   Download