Cashew nut insects A Lecture To ToT trainees ( FFS) By Mr. Allah Dad Khan Provincial Coordinator IPM KPK MINFAL Pakistan

2. Cashew Nut Injurious
Insects
A
Lecture To ToT trainees (
FFS)
By
Mr. Allah Dad Khan
Provincial Coordinator IPM
KPK

3.  Symptoms
 Deformed leaves with angular lesions along veins; leaves may drop from plant;
elongated green lesions on young shoots which may exude gummy substance;
dieback of shoots
 Cause Insects
 Comments Helopeltis bugs are slender with long legs and antennae; antennae twice
as long as body; females are red; males brown; nymphs are yellowish in color
 Management
 Monitor crop regularly for signs of damage; conserve populations of natural
enemies, weaver ants can reduce populations; avoid interplanting cashew with
other crops which are hosts for helopeltis bugs such as tea and cotton


4.  Symptoms
 Necrotic lesions on fruit which develop into hard
lumps; pockmarks of fruit; spotting on kernels
 Cause
 Insect
 Comments
 Adults are red-brown in color; nymphs are red-
brown to green in color
 Management
 Conserve natural enemies by avoiding
unnecessary applications of insecticides

5.  Symptoms
 Brown-black gummy frass (insect excrement) on trunk and
branches; girdling of branches; plants dying
 Cause
 Insect
 Comments
 Adults large and gray-brown with knobbly appearance;
larvae legless grubs which are white with a brown head
 Management
 Remove bark from infested areas and destroy any larvae or
pupae found, this process should be repeated every month
for up to six months; severely infested trees should be
removed and destroyed; remove all adult weevils from
tree prior to destruction and also remove bark and kill all
larvae and pupae