Peas insects A Lecture By Allah Dad Khan Provincial Coordinator IPM MINFAL Islamabad

2. Peas Insects
A
Lecture To ToT trainees ( FFS)
By
Mr. Allah Dad Khan
Provincial Coordinator IPM KPK
MINFAL Pakistan

4. Mexican bean beetle
Epilachna varivestis
Symptoms
• Irregular patches of feeding
damage on underside of leaves
which causes the top surface of
the leaf to dry out, giving the
leaves a lacy appearance; insect
will also damage flowers and
small pods; pods may be
damaged so badly that they drop
from the plant; adult insect is an
orange-brown beetle with black
spots; larvae are fat-bodied grubs
which taper at the end and are in
rows of conspicuous spines
• Cause
• Insect
Adult Bettle

5. Mexican bean beetle
larva Egg Clusture

6. Aphids (Pea aphid, Bean aphid, Cowpea aphid, Melon aphid, Peach aphid, etc.)
Acyrthosiphon pisum
Aphis spp.
Myzus persicae
Symptoms
• Small soft bodied insects on
underside of leaves and/or stems of
plant; usually green or yellow in
color, but may be pink, brown, red
or black depending on species and
host plant; if aphid infestation is
heavy it may cause leaves to yellow
and/or distorted, necrotic spots on
leaves and/or stunted shoots;
aphids secrete a sticky, sugary
substance called honeydew which
encourages the growth of sooty
mold on the plant
• Cause
• Insects
Close-up image of a pea aphid
(Acyrthosiphon pisum)

7. Spider mites (Two-spotted spider mite)
Tetranychus urticae
Symptoms
• Leaves stippled with yellow;
leaves may appear bronzed;
webbing covering leaves;
mites may be visible as tiny
moving dots on the webs or
underside of leaves, best
viewed using a hand lens;
usually not spotted until there
are visible symptoms on the
plant; leaves turn yellow and
may drop from plant
• Cause
• Arachnid

8. Leafminers
Lyriomyza spp.
Symptoms
• Thin, white, winding trails on
leaves; heavy mining can
result in white blotches on
leaves and leaves dropping
from the plant prematurely;
early infestation can cause
yield to be reduced; adult
leafminer is a small black and
yellow fly which lays its eggs in
the leaf; larvae hatch and feed
on leaf interior
• Cause
• Insects

9. Thrips (Western flower thrips, Onion thrips, etc.)
Frankliniella occidentalis
Thrips tabaci
Symptoms
• If population is high leaves
may be distorted; leaves are
covered in coarse stippling and
may appear silvery; leaves
speckled with black feces;
insect is small (1.5 mm) and
slender and best viewed using
a hand lens; adult thrips are
pale yellow to light brown and
the nymphs are smaller and
lighter in color
• Cause
• Insect
flower thrips