I.C.A.R., Research Complex, Bishnupur, Shillong-13.
Present address: * Directorate of Oilseeds Research, Rajendranagar, Hyderabad - 500 030.
** Indian Agricultural Res. Instt., Regional Station, Kanpur - 208 024. Part of M.Sc. thesis of the senior author.
Leafminer, Citrus psylla, Red scale, Mealy bugs and Aphids were recorded as major pests of Khasi mandarin oranges in NEH region of India. These pests significantly contribute towards the Citus decline in the region. Peak period of activities were observed form July to January for leafminer, March to October for Psylla, November to December for Red scale, July to October for Mealy bugs and April for Aphids with infestation on tree basis being 83.375, 8.125, 54.0, 24.375 and 10.25 per cent respectively for these pests.