Bionomics and control of mango brown leafhopper (Idiocerus niveosparsus Leth.).
Wen H. C., Lee H. S.
Author Affiliation: Plant Protection Division, Fengshan Tropical Horticultural Experiment Station, Taiwan Agricultural Research Institute, Taiwan.
Journal of Agricultural Research of China 27 : 47-52
Abstract : Studies were carried out in southern Taiwan on the biology and control of the mango pest Chunrocerus niveosparsus (Leth.) (Idiocerus niveosparsus). Eggs were laid in the midribs of young leaves, stalklets and florets, causing injury. Nymphal and adult feeding on flower sap caused withering of the flowers. Honeydew excreted by the insect fell on to flowers, shoot and leaves; this became covered in sooty mould in moist conditions and eventually formed a dark grey incrustation that not only interfered with photosynthesis but also reduced fruit set. There were 4 nymphal instars. Hibernation did not occur. Population size increased from January onwards (coinciding with flowering), reached a maximum in March-April, and gradually declined thereafter. Sprays of methamidophos (Tamaron), carbaryl (Sevin) and methomyl (Lannate) applied 4 times at 10-day intervals gave promising control of the pest.