Comparison of the nymphal density of the Asian citrus psyllid, Diaphorina citri and its natural enemy density on house side planted orange jasmine [Murraya paniculata] trees with that on the wild tree
2008
Hayashikawa, S.(Kagoshima-ken. Inst. for Agricultural Development, Amami (Japan). Oshima Branch) | Suenaga, H. | Torigoe, H.
The Asian citrus psyllid, Diaphorina citri Kuwayama is common in the Nansei Archipelago, is able to transmit citrus greening disease. The last report suggested that the psyllid density on citrus trees was closely correlated to its occurrence on neighboring planted or wild orange jasmine trees in Amami archipelago. In order to decrease the psyllid density in the disease infested area, it is necessary to control it not only on citrus but on orange jasmine. For successful control of the psyllid, we surveyed the occurrence of its nymphs and natural enemies on orange jasmine. On house side windbreaks which had new flushes all through the year except in December and January because of winter pruning, nymphal population consisted mainly of 1st and 2nd instars, fluctuated in correlation to the flush growth, and kept occurring except in December and January. While on wild trees, as main flush growth concentrated in spring, nymphal population kept so low density, that 5th instar were found intermittently. The result suggests that it will be more important to control houseside populations rather than wild tree populations. During this survey, we found many predators and parasitoids of the psyllid on orange jasmine, although they might fail to keep the psyllid density low.
Afficher plus [+] Moins [-]Mots clés AGROVOC
Informations bibliographiques
Cette notice bibliographique a été fournie par Agriculture, Forestry and Fisheries Research Information Technology Center
Découvrez la collection de ce fournisseur de données dans AGRIS