This document discusses several pests that affect pulses (legumes) such as pigeonpea, urd bean, mung bean, chickpea, lentil, and pea. It describes the biology, identification, damage symptoms and management of major pests like the gram pod borer, spotted pod borer, red gram pod fly, plume moth, whitefly, stem fly, leaf minor, spiny pod borer, field bean pod borer, bean aphid, and gram cutworm. It provides details on the life cycle, host range, morphology of immature and adult stages, and integrated pest management strategies for each.
2. Borers and defoliators of rice_Dr.UPR.pdfPirithiRaju
Rice, the staple diet of over half of the
world's population, is grown on over
145 million ha in more than
110 countries, and occupies almost
one-fifth of the total world cropland
under cereals. Classified primarily as
a tropical and subtropical crop, rice is
cultivated as far north as 53° N
latitude on the border between the
USSR and China and as far south as
39° S latitude in Central Argentina,
and from sea level to altitudes of
3,000 m. The crop is established either
by direct sowing (broadcast or
drilled) or by transplanting. Rice
grows under diverse water regimes:
it is an upland crop where there is no
standing water and rains are the sole
source of moisture, or a lowland crop
under conditions in which water,
derived either from rain or irrigation
systems, is impounded in the fields.
Rice is cultivated on terraces, on
slopes, and in valleys or other lowlying sites. Floating rice may be
grown in several meters of standing
water.
Most of the world's rice production is from irrigated and rainfed
lowland ricefields where insect pests
are constraints. The warm and humid
environment in which rice is grown is
conducive to the proliferation of
insects. Heavily fertilized, hightillering MVs and the practice of
multicropping rice throughout the
year favor the buildup of pest populations. The intensity of the insect
problem in such an area can be
illustrated by the experience at IRRI.
In 117 experiments conducted over
15 yr, plots protected from insects
yielded almost twice as much as
unprotected plots.Average
rice yield loss due to various insect
pests was estimated to be 31.5% in
Asia (excluding mainland China) and
21 % in North and Central America in 1967. 1 Estimates for tropical South
and Southeast Asia are considerably
lower. In a 1989 survey of 50 rice entomologists from 11 countries,
average yield losses due to insect
pests were estimated at 18.5%. Yield
increases of this magnitude frequently result from effective insect
control in the different South and
Southeast Asian countries.
The rice plant is subject to attack
by more than 100 species of insects;
20 of them can cause economic
damage. Together they infest all parts
of the plant at all growth stages, and
a few transmit viral diseases. The
major insect pests that cause significant yield losses are leafhoppers and
planthoppers, which cause direct
damage as well as transmit viruses;
stem borers; and a group of defoliator
species.
2. Borers and defoliators of rice_Dr.UPR.pdfPirithiRaju
Rice, the staple diet of over half of the
world's population, is grown on over
145 million ha in more than
110 countries, and occupies almost
one-fifth of the total world cropland
under cereals. Classified primarily as
a tropical and subtropical crop, rice is
cultivated as far north as 53° N
latitude on the border between the
USSR and China and as far south as
39° S latitude in Central Argentina,
and from sea level to altitudes of
3,000 m. The crop is established either
by direct sowing (broadcast or
drilled) or by transplanting. Rice
grows under diverse water regimes:
it is an upland crop where there is no
standing water and rains are the sole
source of moisture, or a lowland crop
under conditions in which water,
derived either from rain or irrigation
systems, is impounded in the fields.
Rice is cultivated on terraces, on
slopes, and in valleys or other lowlying sites. Floating rice may be
grown in several meters of standing
water.
Most of the world's rice production is from irrigated and rainfed
lowland ricefields where insect pests
are constraints. The warm and humid
environment in which rice is grown is
conducive to the proliferation of
insects. Heavily fertilized, hightillering MVs and the practice of
multicropping rice throughout the
year favor the buildup of pest populations. The intensity of the insect
problem in such an area can be
illustrated by the experience at IRRI.
In 117 experiments conducted over
15 yr, plots protected from insects
yielded almost twice as much as
unprotected plots.Average
rice yield loss due to various insect
pests was estimated to be 31.5% in
Asia (excluding mainland China) and
21 % in North and Central America in 1967. 1 Estimates for tropical South
and Southeast Asia are considerably
lower. In a 1989 survey of 50 rice entomologists from 11 countries,
average yield losses due to insect
pests were estimated at 18.5%. Yield
increases of this magnitude frequently result from effective insect
control in the different South and
Southeast Asian countries.
The rice plant is subject to attack
by more than 100 species of insects;
20 of them can cause economic
damage. Together they infest all parts
of the plant at all growth stages, and
a few transmit viral diseases. The
major insect pests that cause significant yield losses are leafhoppers and
planthoppers, which cause direct
damage as well as transmit viruses;
stem borers; and a group of defoliator
species.
The ppt is about the pests that attack various fruit crops like mango, banana, citrus and cashew. In the ppt, the life cycle of the insects, the damage caused by them to the crops and the measures to control them are described.
Pests of sugarcane_Binomics_IPM_Dr.UPR.pdfPirithiRaju
PESTS OF SUGARCANE - BORERS
BORERS
1. Early shoot borer, Chilo infuscatellus, Crambidae, Lepidoptera
Symptom of damage: Deadheart in 1-3 month old crop, which can be easily pulled out, rotten portion of the straw coloured dead-heart emits an offensive odour. A number of bore holes at the base of the shoot just above the ground level.
Nature of damage: Caterpillar bores into the central shoot and feeds on the internal tissue. This cause interference in the translocation of plant sap and damage the sugar storing tissues.
Egg: Flat-scale like eggs are laid in 3-5 rows on the lower surface of leaves in masses of 4-100. The masses are slightly overlapping like tiles.
Larva: Larva is dirty white with five dark violet longitudinal stripes and dark brown head.
Pupa: Pupation takes place within the tunnel. Caterpillar before pupating makes a large exit hole in the stem and blocks the opening with silken discs.
Adult: Pale greyish brown moth with black dots near the costal margin of the forewings and with white hindwings.
2. Internode borer, Chilo sacchariphagus indicus, Crambidae, Lepidoptera
Symptom of damage: Internodes constricted and shortened, with a number of boreholes and fresh excreta in the nodal region. Affected tissues reddened.
Nature of damage: Caterpillars attack sugarcane plants after 3 months of planting. They bore into the canes near the nodes; entry holes are plugged with excreta. Entry is generally confined to the first five internodes.
Egg: Scale-like white eggs are laid by female moths in batches of 9-11, near the midribs, on leaf sheaths or on stem.
Larva: White larva with four violet longitudinal stripes and light brown head.
Pupa: Pupation takes place in semi-dried leaf sheath.
Adult: Pale brown with white hind wings.
3. Top borer, Scirpophaga excerptalis, Pyralidae, Lepidoptera
Symptom of damage: Deadheart in grownup canes, which cannot be easily pulled; deadheart reddish brown in colour; parallel row of shot holes in the emerging leaves and red tunnels in the midribs of leaves; bunchy tip due to the growth of side shoots.
Nature of damage: Caterpillars are mainly found in the apical portion of the canes, boring through the growing point and down the upper joints until it reaches the sappy portion of the stem, there it feeds on the tissues and destroys the cane. They also bore into the unfolded leaves preferably into the midrib, mining its way to the base.
Egg: Eggs are laid on the lower surface of top leaves in clusters particularly near midribs. The clusters are covered with buff coloured hairs.
Larva :Smooth, white or cream coloured with a red coloured mid-dorsal line and yellow head.
Pupa: Pupation takes place within the larval tunnel in a chamber with an exit hole constructed by the caterpillar.
Adult: White coloured moth (with a buff coloured anal tuft in the abdominal tip of female).
Pests of safflower_Binomics_Identification_Dr.UPR.pdfPirithiRaju
Safflower (Carthamus tinctorius) is a highly adaptable crop known for its seeds which are used for oil extraction and its flowers used in coloring and flavoring foods. Like many crops, safflower can be affected by various pests that can impact its growth and yield. Here’s an overview of some common pests that can affect safflower:
Insects
Safflower Fly (Acanthiophilus helianthi)
These flies lay eggs on the plant, and the emerging larvae feed on the flowers and seeds, causing significant damage.
Sunflower Moth (Homoeosoma electellum)
The larvae of the sunflower moth feed on the developing seeds and flower parts, leading to yield loss.
Aphids (various species)
Aphids suck sap from the plant, which can weaken it. They also excrete a sticky substance known as honeydew, which can lead to the growth of sooty mold.
Thrips (Thysanoptera spp.)
Thrips feed on the flowers and sometimes the leaves, causing deformed growth and reduced seed production.
Cutworms (Noctuidae family)
Cutworms are the larvae of nocturnal moths and can severely damage seedlings by cutting them at the soil line.
Wireworms (Elateridae family)
The larvae feed on seeds and roots, impairing seed germination and reducing plant vigor.
Mites
Spider Mites (Tetranychus spp.)
These tiny pests cause damage by piercing plant cells and sucking out the contents. Infestations can lead to yellowed, speckled leaves and overall plant stress.
Birds
Various bird species
Birds are attracted to safflower seeds and can consume a significant portion of the crop if not managed, especially during the ripening stage.
Management Strategies
Cultural Control: Implement crop rotation, remove plant residues, and use trap crops to disrupt the life cycle of pests.
Biological Control: Encourage natural predators and parasitoids such as lady beetles for aphids and parasitic wasps for caterpillars.
Chemical Control: Use pesticides judiciously, targeting specific pests as needed, and following integrated pest management (IPM) practices to minimize environmental impact.
Physical Barriers: Netting or row covers can be effective in protecting seedlings from birds and some insect pests.
Monitoring and timely intervention are key to managing pests in safflower. Using a combination of methods often yields the best results, reducing pest populations while promoting a sustainable crop production system.
Pests of Redgram_Identification, Binomics_Dr.UPRPirithiRaju
Redgram, also known as pigeon pea or Cajanus cajan, is a legume crop cultivated for its edible seeds and forage. Like other crops, redgram is susceptible to various pests that can cause damage to both the plants and the harvested grains. Some common pests of redgram include:
Pod Borer (Helicoverpa armigera): This is one of the most destructive pests of redgram. The larvae of this moth bore into the pods, feeding on developing seeds. Pod borer infestations can lead to significant yield losses.
Pod Fly (Melanagromyza obtusa): The larvae of this fly feed on the developing seeds within the pods, causing damage and reducing yield.
Pod Bug (Riptortus spp.): Pod bugs pierce and suck on the pods, causing damage to developing seeds. Severe infestations can lead to reduced yield and quality of harvested grains.
Aphids: Aphids can infest redgram plants, sucking sap from the leaves, stems, and pods. They can transmit viruses and cause distortion of plant growth, leading to reduced yield.
Whiteflies: These tiny insects feed on the undersides of leaves, sucking sap and causing yellowing, wilting, and reduced photosynthesis. Whiteflies can also transmit viruses to redgram plants.
Thrips: Thrips feed on plant tissues, causing stippling, distortion, and discoloration of leaves. Severe infestations can lead to reduced plant vigor and yield.
Caterpillars: Various species of caterpillars can feed on redgram foliage, causing defoliation and reduced photosynthesis. Severe infestations can lead to significant yield losses.
Root-Knot Nematodes (Meloidogyne spp.): These microscopic roundworms infest the roots of redgram plants, causing swellings (galls) and impairing root function. Severe infestations can lead to stunted growth and reduced yield.
Integrated pest management (IPM) practices are important for managing pests in redgram cultivation. These may include cultural practices such as crop rotation, intercropping with pest-repellent crops, use of resistant varieties, biological control using natural enemies of pests, and judicious use of chemical pesticides when necessary. Regular monitoring of fields for pest infestations and timely intervention are essential to minimize crop losses.
Instructions for Submissions thorugh G- Classroom.pptxJheel Barad
This presentation provides a briefing on how to upload submissions and documents in Google Classroom. It was prepared as part of an orientation for new Sainik School in-service teacher trainees. As a training officer, my goal is to ensure that you are comfortable and proficient with this essential tool for managing assignments and fostering student engagement.
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdfTechSoup
In this webinar you will learn how your organization can access TechSoup's wide variety of product discount and donation programs. From hardware to software, we'll give you a tour of the tools available to help your nonprofit with productivity, collaboration, financial management, donor tracking, security, and more.
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
How to Split Bills in the Odoo 17 POS ModuleCeline George
Bills have a main role in point of sale procedure. It will help to track sales, handling payments and giving receipts to customers. Bill splitting also has an important role in POS. For example, If some friends come together for dinner and if they want to divide the bill then it is possible by POS bill splitting. This slide will show how to split bills in odoo 17 POS.
We all have good and bad thoughts from time to time and situation to situation. We are bombarded daily with spiraling thoughts(both negative and positive) creating all-consuming feel , making us difficult to manage with associated suffering. Good thoughts are like our Mob Signal (Positive thought) amidst noise(negative thought) in the atmosphere. Negative thoughts like noise outweigh positive thoughts. These thoughts often create unwanted confusion, trouble, stress and frustration in our mind as well as chaos in our physical world. Negative thoughts are also known as “distorted thinking”.
3. Gram pod borer: Helicoverpa armigera,
Noctuidae: Lepidoptera
Distribution
World wide
Host range
Cotton, Sorghum, Cumbu, Lab lab, Peas, Chillies, Groundnut,
Tobacco, Bhendi, Maize, Tomato and Soybean
Biology
Site of egg laying- on pods
4. Identification
• Eggs - Spherical in shape and creamy
white in colour, present singly.
• Larva - Shows colour variation from
greenish to brown.
• It has dark brown grey lines on the
body with lateral white lines and also
has dark and pale bands.
5. • Adult
• Light pale brownish
yellow stout moth.
• Forewings are olive
green to pale brown in
colour with a dark brown
“V” shaped spot in the
centre.
Hind wings are pale smoky
white with a broad blackish
outer margin.
• Pupa - Brown in colour, occurs
in soil, leaf, pod and crop debris
6. Damaged
In pigeonpea, chickpea
and other pulses, damaged
pods show clear cut, big,
circular holes;
larvae feed on flowers and
pods with rear part of the
body remaining outside
the pod and granular
faeces are present on the
plant or affected pods.
7. Spotted pod borer: Maruca testulalis,
Pyraustidae: Lepidoptera
Distribution
Tropical and Subtropical regions of world
Host range
Beans, Peas, Castor, Groundnut, Cowpea, Soybean, Tobacco,Red gram, Green
gram and Black gram
Biology
Larval period: 15 –20 days
Greenish white with brown
head
Egg period: 4 days
Lays eggs singly - flowers , buds & pods
Pupation: pupates in dry leaves and
debris
Adult:
Brown forewings
and white
hind wings
8. Identification of the pest
• Larva - Greenish white
with brown head. It has
two pairs of dark spots on
the back of each segment
Adult
• Forewings- light brown
colour with white markings
• Hindwings – white colour
with brown markings at
the lateral edge
9. Symptoms of damage
• Bore holes on the
buds, flower or pods
• Infested pods and
flowers are webbed
together.
10. Management
• Bird perches @ 50 / ha
• Set up light trap @ 1/ ha
• Pheromone traps @ 12 / ha
ETL:
5-6 eggs or 2-3 small larvae / plant
• Effective egg parasitoid, Trichogramma sp.
• Larval parasitoid, Chelonus blackburnii
• NPV @ 1. 5 x 10 12 POBs / ha + 0.1 % teepol
• NSKE 5% twice followed by Triazophos 0.05 %
11. Red gram pod fly: Melanagromyza obtusa,
Agromyzidae: Diptera
Distribution
India, South East Asia and Japan
Biology
Host range
Red gram, Okra and Safflower
Egg period: 2-4 days
Lays eggs singly in pod walls
Maggot: 5 – 18 days
Small white coloured
Pupa: 7-10 days
Adult:
Tiny black fly
13. Symptoms
Dark brown encrustation
on the pod wall
Dry pods showing pin
head size hole,
Seeds shriveled, striped
and partially eaten
Seed tunnelling caused
by the maggot
Exit holes of pod fly
14.
15.
16.
17.
18.
19.
20. Plume moth: Exelastis atomosa,
Pterophoridae: Lepidoptera
Distribution
India, Nepal and New Guinea
Host plants
Red gram, Lab lab, Niger and Horse gram
Biology
Site of egg laying- on pods
21. Identifications
• Larva - is greenish
brown, fringed with
radiating hairs and
spines
• Adult - is delicate,
brown coloured small
moth with plumed
wings.
22. Symptoms of damage
• Pin head size holes
on pods
• Small spiny
caterpillars and
pupae seen on the
pods
23. White fly
Systemic position:
Scientific name : Bemisia tabaci (Gennadius)
Family : Aleyrodidae
Order : Hemiptera
Distribution:
It is widely distributed in
India and particularly
serious on cotton and
brinjal.
ETL:
5-10 adults & nymphs
before 9 a.m.
24. Identification
Eggs are stalked light yellow in the
beginning but turn brown later on.
Nymph : Greenish yellow, oval in
outline.
Pupa: oval in shape, present on the
under surface of the leaves.
Adult - Minute insects with yellow
body covered with a white waxy
bloom.
Active period: Sep.-Oct.
25. Biology
A single female lays about 70 stalked eggs singly on the
undersurface of leaves, mostly on the top and middle
leaves of plant.
The insect can often breed parthenogenetically.
Egg period ranges from 3-33 days.
The nymphs remain stationary once they settle down.
Nymphs moult thrice.
Nymphal period lasts for 9-18 days.
The pupal period 2-8 days.
Total life cycle completed in 14-107 days.
There are 12-14 overlapping generations in a year.
26. Nature and symptom of Damage
Chlorotic spots on the leaves.
Severe infestation results in
premature defoliation
Development of sooty mould
Shedding of buds and bolls and
poor boll opening
It also transmits the leaf curl virus
diseases of cotton.
27. Management practices
• Adopting crop rotation with non-preferred hosts such as
sorghum, ragi, maize etc.,
• Removal and destruction of alternate weed hosts.
• Preferably wider spacing and judicious application of
recommended dose of fertilizers
• Late sowing may be avoided and the crop growth should
not be extended
• Cultivation of most preferred alternate host crops like
brinjal, bhendi, sunflower may be avoided
• Set up yellow pan traps and sticky traps @ 12/ ha
28. Spray any one in early stage (500 L fluid/ha)
•Methyl demeton 25 EC 500 ml or
•phosphamidon 40 SL 600 ml/ha
Spray any one in mid/late stages (1000 L liquid/ha)
Phosalone 35 EC at 2.5 l/ha
Quinalphos 25 EC at 2.0 l/ha
Monocrotophos 36 SL 1.25 l/ha
Triazophos 40 EC 2.0 l/ha
Acephate 75 SP 1.30 kg/ha
Note: Cypermethrin, fenvalrate and deltamethrin cause
resurgence of whiteflies. So avoid repeated spraying of
pyrethroids.
29.
30.
31.
32.
33. Stem fly: Ophiomyia phaseoli,
Agromyzidae: Diptera
Distribution
India, Srilanka, New South Wales, Philippines, Burma, China,
Pakistan,Indonesia, Thailand and Singapore
Biology
Host range
Red gram, Beans , Cowpea, Soybean and Lima bean
Egg period: 3days
Lays eggs singly - pods
Maggot: 5 – 16 days
Small yellow coloured
Pupa: 8-9 days
Adult:
Tiny black fly
34. Identification of the pest
Maggot- Small yellow
coloured
Adult -Tiny black fly
Symptoms of damage
Drooping of the tender
leaves and – seedling wilt
Yellowing of young plants.
Stem become swollen and
start ribbing where maggot
and pupae are present
35. Management
• Natural enemies, Euderus dividus, E. agromyzae and Eurytoma sp.
• Carbaryl 10 D @ 25 kg / ha or Endosulfan 35 EC 500 ml / ha
Soil application of carbofuran 3G @ 15 kg/ha at sowing
Spray NSKE 5% Timely sowing also minimizes the attack of the pest
Advancing the time of sowing to may instead of July lowers incidence of
the pest
36. Scientific name : Aproarema modicella Dev.
Famiy : Gelechiidae
Order : Lepidoptera
Leaf minor
Host range : Pea, Groundnut, soybean & pigeon pea
37. Identification
• Adult is a grayish black moth, 6 mm long with 10
mm wing span.
• Eggs are shiny white
• Larva is pale green color with black head .
• Pupation takes place in the webbing.
• Active period: August to October
Damage
• Larvae mine in to the leaves.
• Severely attacked field looks "burnt" from a
distance.
• ETL : 5 mines/plant
• 10% leaflet damage
Next
38. Management of leaf feeders
• Castor or sunflower as trap crop for egg laying and
destroy eggs/1st stage larvae, sunflower act as bird
perches as well.
• Use pheromone traps (5/ha) to monitor moth population.
• Erection of bird perchers @ 40-50 /ha.
• Install light trap.
Next
39. Distribution
India, Japan, Srilanka, Australia, West Indies, South America, Egypt and
Europe
Host range
Red gram, Horse gram, Cow pea and Green gram.
Biology
Spiny pod borer: Etiella zinckenella,
Phycitidae: Lepidoptera
Egg period: 5-6 days
Lays eggs singly
Larval period: 10 – 13 days
5 black spots on the prothorax
Pupal period: 9 – 10 days
Adult:
Brownish grey moth
With white stripe
40. Identification of the pest
•Larval – greenish initially,
turns pink before pupation.
•Brownish grey moth
•It has 5 black spots on the
prothorax Adult
•Prothorax – orange in colour
•Fore wing - has a white stripe
along the anterior margin
41. Symptoms of damage
Dropping of flowers and
young pods
Older pods marked with
a brown spot where a
larvae has entered
42. Field bean pod borer: Adisura atkinsoni
Noctuidae: Lepidoptera
Distribution
All over India
Host range
Pigeon pea, Lab lab and Niger
Biology
Egg period: 3 days
Larval period: 14 – 15 days
Brownish green and a humped
anal segment
Pupal period: 11 days
Pupates in soil
Adult:
Brown forewings
with ‘V’ shaped
specks
43. Symptoms of damage
•The larva bores inside the
pod and feeds on the seeds
within.
Identification of the pest
•Larva - greenish having brown
lateral marking
•It has humped anal segment
Adult
Moths are yellowis brown
Forewings - yellow coloured with
‘V’ shaped specks
Hindwings – has pale brown
markings
45. Bean aphid: Aphis craccivora,
Aphididae: Hemiptera
Distribution
Cosmopolitan, India, Africa,
Argentina, China,Europe and Australia
Host range
Groundnut, Red gram, Peas, Beans,
Safflower, Lablab and Niger
Biology
Nymph:
Pale green coloured
Adult:
Greenish black coloured
Female produces 8 – 30
eggs
5-8 days
50. LIFE CYCLE:
The pest is active from October to
April
The moths appear in October and lay
upto 900 eggs on the under surface of
leaves, shoots,steams or in soil.
The eggs hatch in one week during summer and in two
weeks during winter
51. LIFE CYCLE:
LARVAE Full grown in 4 to 7 weeks
PUPATE for two weeks in the soil.
The life cycle is completed in 7-11
weeks
There are generally two
Generations in year
52. DAMAGE:
The caterpillars come out from their
breeding places at night and become
active.
Cutting down the young plant of gram,
vegetables seedlings etc.
Just above or slightly below the surface
of soil.
The cutaway gram seedlings in the field
are indication of its attack
53. CONTROL:
ETL: 2 larvae /meter row
Cultural control:
Hand hoeing
Clean cultivation should be done
The bait is placed in small heap in the infested field
in the evening
Mechanical control:
Trapping the moths by light traps
Hand picking
54. CONTROL
BIOLOGICAL CONTROL:
The pest is control by insect predators
CHEMICAL CONTROL:
Spray
CYPERMETHRIN+MONOCROTOPHOS
EC 500ml/acre
It is also control by using poisoned
BRAN MASH
55. Blue butterfly: Lampides boeticus,
Lycaenidae: Lepidoptera
Distribution
All over India
Larval period: 9-27 days
Pale green
Egg period: 4-7days
Pupal period : 5-7 days
Adult:
Ventral side of wings
with numerous stripes
and brown spots
Host Plants
Cow pea, Red gram, Black gram
and Lab lab.
Biology
56. Identification of the pest
• Larva – It is flat and
slightly rounded; Pale
green with a rough skin.
• Adult - moth is greyish
blue with prominent
black spots in the hind
wings and a long tail;
Ventral side of wings
with numerous stripes
and brown spots
57. Blister beetle: Mylabris phalerata,
Meloidae: Coleoptera
Identification of the pest
•Adult – Elytra are black in
colour with a round orange spot
and two transverse wavy
orange bands across the wings.
Symptoms of damage
The adult feeds voraciously on
buds and flowers
58. Management
In isolated pigeonpea plots
The beetles can be controlled manually by
picking
Most insecticides are not very effective against
these beetles, but synthetic pyrethroids such as
cypermethrin 10 EC @ 1.0 ml/l or lamda
cyhalothrin 5 EC @ 1.0 ml/l work reasonably
well.
59. Tobacco caterpillar
Host range: Polyphagous
• Brown moths with a wing span of about 30
mm and mottled forewings.
• Egg masses about 4 X 7 mm golden brown
on the upper surface of leaves.
• Full grown larvae are stout, cylindrical and
pale greenish brown with dark markings.
• The pupae are reddish brown (in the soil
close to the plant).
• Active period: August-Sep.
Next
60. Damage
• Freshly hatched larvae feed gregariously,
scraping the chlorophyll, soon disperse
and later stages feed voraciously on the
foliage at night, hiding usually in the soil
around the base of the plants during the
day.
• Sometimes the feeding is so heavy that
only petioles and branches are left
behind.
• In light soil, caterpillar bores into the
pods.
Next
62. Identification
Egg - Laid in masses which
appear golden brown
Larva - Pale greenish with dark
markings.
Pupa - Pupates in soil with
radish colour
Adult
• Forewings – brown colour
with wavy white marking
• Hindwings- white colour
with a brown patch along the
margin
63. Biology
Active period: July-Nov.
Female lays 5-6 egg clusters of 150-200 eggs.
Incubation period is 5-9 days.
Larvae undergo five instars in an average 22-30 days
to become full grown.
Pupa period 8-10 days
Adult live upto 4 days &
Total life completed in 45 days.
64. Nature and symptom of Damage
Scrapping the epidermal layer,
leaving the skeleton of veins of leaf
During severe attack, only the stem
and side shoots will be standing in
the field without any leaf or bolls
Larvae feed the leaves by making
small holes.
Skeletonized leaf