This is a presentation on Entomological survey-Pest detection in Farmer's field & their management in Darjeepara village,NADIA (RAWE-2019)

1. STUDY ON INSECT PEST STATUS AND
THEIR INCIDENCE IN DIFFERENT
CROPS
Presented by : Group-1
(Roll no. Ag 01 to Ag 24)
RAWE Programme
Department of Agricultural Entomology

2. Roll No. Name
01 ANURAG BERA
03 SUBHA CHAKRABORTY
05 SANDIP KUMAR SARKAR
13 PRITHA BONDOPADHAYAY
17 SHANKHA SUBHRA MAITY
19 ABHISEK BANIK
20 SOURAV PATRA

3. VILLAGE “DARJEEPARA” AT A GLANCE
NAME OF THE VILLAGE DARJEEPARA
Mouza Subudhhipur
J.L No. 33
Name of the Gram Sansad Darjeepara
Gram Sansad No. IX
Gram Panchayet Kasthadanga –I
Block Haringhata
Sub division Kalyani
District Nadia
Area 1.23 sq.km.
Latitude and Longitude 22.96oN,88.63OE
Height from Above Mean Sea Level 12m
Pin Code 741257

4. PEST is a Latin and French word meaning plague or infectious
disease.
Earlier the term ‘pest’was used for devastating infectious
disease.
Today the pest is defined as ‘such an insect or any other living
being whose population increases to such an extent to cause
economic losses to crops or a nuisance and health hazard to man
and to livestock’.

5. CRITERIA OF TO BE PEST
Insect or any other living organism.
Economic losses to crop or human health.
A minimum population level i.e. Threshold level of population.
It means to control insect-pest below the ETL of population
has no significance. Therefore pest control measures are to
be adopted at ETL (density of pest population which needs
control measures)or before EIL(lowest population density
that will cause economic damage)

6.  CROPS UNDER THE STUDY IN THE VILLAGE
DARJEEPARA
GUAVA
POINTED
GOURD
BRINJAL
WATERMELON CHILLI

7. Study on insect pest incidence & their extent of
damage in GUAVA
Name of the farmer: BIN MOHAMMOD MONDAL
Crop area cultivated: 18 KATHA
Stage of the crop: MATURITY
Pest species encountered : Dudhkhaja
1. Fruit fly
2. Fruit borer
3. Mealy bug

8. Main insect pest of GUAVA & their
damage symptoms
Guava fruitfly
1. Scientific name:
Bactrocera dorsalis
Bactrocera zonata
2. Family: Tephritidae
3. Order: Diptera
4. Damage symptoms:
Maggots feed on pulp , become discoloured ,
brown rotten patches appear on the
attacked fruit , produce foul smell.
Damaged fruits usually falls down and
make fruits unfit for consumption.

9. Extent of damage of Guava Fruitfly on
GUAVA
Plant No. Total Fruit No infested % Fruit infested
1 45 5 11.1
2 33 4 12.1
3 30 3 10
4 42 5 11.9
5 25 2 8
AVG. 175 19 10.62

10. Other insect pest found in GUAVA
Common name Scientific name Family : Order Damage symptoms
1. Guava mealy
bug
Ferrisia virgata Pseudococcide :
Hemiptera
Nymphs and adults
suck sap that
results in crinkling
and yellowing of
leaves and rotting
of berries
2. Guava Fruit
Borer
Deudorix isocrates Pyraustidae :
Lepidotera
Bore holes into the
fruits , feed on
flesh and seeds ,
make the fruit
hollow from inside

11. Damage symptoms by Fruit borer observed in the
field

12. Damage caused by Guava Mealy bug in the
field

13. Pest management in GUAVA
Name of the pest Measures taken(Farmer’s
practice)
Recommended
Measures
1. Guava fruitfly 1. Removal and destruction of
infested fruits to avoid further
multiplication
2. Use of pheromone trap
‘Cadbury’(methyl eugenol) @10-
11/ha
1. Ploughing of soil below the
tree during nov-dec to
destroy the pupa.
2. Guava fruit borer 1. Spray superkiller
(Cypermethrin 25%EC)
1. Clean cultivation in orchard
2. Collection and destruction
of infested fruits
3. Guava mealy bug 1. Spray Rogor/Tafgor (Dimethoate
30% EC) @ 1.5ml/1 L of water
2. Pruning an destruction of
infested twigs
1. branches touching the
ground should be cut and
destroyed
2. arranging polythene sheets
around the stem

14. Remarks
• In the observed GUAVA field , there is a moderate
infestation of Guava Fruit-fly and few infestation
of fruit borer and mealy bug in stems and leaves.
• It is also observed that farmers mostly depends
on chemical measures than the cultural ones. So
knowledge of Integrated Pest Management must
be given to the farmers by organizing workshops.
• proper use of insecticide with expert opinion

15. Study on insect pest incidence & their extent of
damage in POINTED GOURD
Name of the farmer: MADHAB DEBNATH
Crop area cultivated: 1 BIGHA
Variety cultivated: BOMBAI
Stage of the crop: REPRODUCTIVE
STAGE(FRUITING)
Pest species encountered :
1. Red spider mite ( Main non-insect pest)
2. Spodoptera sp.
3. Fruit-fly
4. White-fly

16.  Scientific name: Tetranychus urticae
 Family: Tetranychidae
 Order:Acari
 Damage symptoms:
1)Generally found on the under surface of leaves ;
punctures the leaf tissues and suck the sap.
2)Characteristic “white specks” on the upper surface
of thee leaves and blotching , stunted growth.
Red spider mite

17. Other insect pest found in POINTED GOURD
Common
name
Scientific
name
Family:
Order
Damage symptoms
1. Tobaccco
cutworm
Spodoptera sp. Noctuidae:
Lepidoptera
young larvae feed gregariously
and scrape the leaves.
2. Fruit-fly Bactrocera
cucurbitae
Tephritidae:
Diptera
Feed commonly on the content of
the fruits , fruits become soft and
orange in colour , make them
unfit for consumption.
3. Whitefly Trialeurodes
vaporariorum
Aleyrodidae:
Hemiptera
Leaves turn yellowish , downward
curling and leaves ultimately
shed.

18. DAMAGING SYMPTOMS OBSERVED IN
THE FIELD
Picture : Damage symptoms
of Spodoptera sp.
Picture : Damage symptom of
Fruitfly

19. Plant
No.
Red spider mite (no./5
leaves/plant)
Spodoptera sp.
Damaged leaves
Fruit fly
damaged
Gourds
1 30 8 0
2 21 3 2
3 53 0 1
4 41 2 0
5 17 5 3
Avg. 32.4 (32) 3.6 (4) 1.2 (1)
Average Red spider mite infestation= 32 mites/5leaves/plant
Average Spodoptera sp. Damaged leaves=4/plant
Average fruit fly damaged pointed gourd=1/plant

20. MANAGEMENT OF PESTS BY FARMER
PEST MANAGEMENT
(for 1 bigha )
Recommended Measures
Red spider mite •KAKA or BOOMTET@ 20-25ml/15 l
water
------
Spodoptera sp. • BIOSTER or BIOKILLER @15ml/15 l
water
clipping of infested terminal shoots at
weekly intervals showing bored holes
along with the larva inside.
White fly •EKTARA(Thiomethoxam 25% WG) or
Ride (Acetamiprid 20 SP)@ 10g/15L
water
collection and destruction of damage
fruits at early stage of crop.
Fruit fly •Pheromone trap(3-5/acre)
•removal by hand picking and
destruction of infected fruits
Use of yellow sticky pheromone trap @
4 nos/acre to control whitefly.

21. Fig: PHEROMONE TRAP

22. remarks
• In the observed POINTED GOURD field ,
there is a moderate infestation of Red Spider
Mite and few infestation of Spodoptera sp.
and Fruitfly in fruits.
• It is also observed that farmers mostly
depends on chemical measures than the
cultural ones. But they also use pheromone
trap for luring Fruitfly males.
• proper use of insecticide with expert opinion

23. Study on insect pest incidence & their extent of
damage in BRINJAL
Name of the farmer: RAJIB CHAKRABORTY
Crop area cultivated: 18 KATHA
Variety cultivated: BHANGAR
Stage of the crop: MATURITY(HARVESTING)
Pest species encountered :
1. Brinjal Shoot and Fruit borer
2. Jassid
3. Brinjal whitefly

24.  Scientific name: Leucinodes orbonalis
 Family: Crambidae
 Order: Lepidoptera
 Damage symptoms:
1)Pinkish larvae bore into tender shoot and cause ‘Dead
heart’.
2)Also bore into developing fruits and flower buds and
make the fruit unfit for consumption.
Brinjal Shoot and Fruit
Borer

25. Plant
No.
Shoot infestation Fruit infestation
Total
no.
No. infested %
infested
Total no. No.
infested
%
infested
1. 19 0 0 5 5 100
2. 24 0 0 8 8 100
3. 15 0 0 5 4 80
4. 20 0 0 8 7 87.5
5. 21 0 0 6 3 50
Avg. 20 0 0 6.40 5.40 84.30
EXTENT OF DAMAGE OF SHOOT AND FRUIT
BORER

26. Common
name
Scientific name Family:
Order
Damage symptoms
1. Jassid Amrasca
biguttula
biguttula
Cicadellidae:
Hemiptera
Nymph+Adult suck sap from
under surface of leaves , upward
curling and yellowing of leaves.
2. Brinjal
Whitefly
Bemicia tabaci Aleyrodidae:
Hemiptera
Chlorotic spot due to sucking of
sap which later coalesce to form
irregular yellowing. Severe
infestation results in premature
defoliation
Other insect pest found in BRINJAL

27.  EXTENT OF DAMAGE BY OTHER INSECTS/MITES ON BRINJAL
Plant no. Jassids (5 leaves) Whitefly (5 leaves) mites (5 leaves)
1 15 40 0
2 10 25 0
3 10 55 0
4 13 10 0
5 18 60 0
Average 13 38 0
Average mite infestation= no infestation
Average no. of Jassids= 13 / 5 leaves / plant
Average no. of White fly = 38 / 5 leaves / plant

28. Picture : Brinjal Jassid Picture : Brinjal Whitefly

29. Pest management in BRINJAL
Name of the pest Measures taken(Farmer’s
practice)
Recommended Measures
1. Brinjal shoot
and fruit borer
 Spray Sumiprempt
(Pyriproxyfen5%EC+fenpropat
hrin15%EC)
1. Remove the affected terminal shoot with
boreholes and fruits
2. avoid continuous cropping of brinjal.
3. install Pheromone trap @12/ha
4. avoid use of synthetic pyrethroids
2. Jassid  Spray Tafgor (Dimethoate
30EC) @ 2ml/l of water
1. Eradicate weed and volunteer plants
from previous crop
2. Use of trap crop(okra)
3. Whitefly Ektara(Thiomethoxam 25%
WG) or Ride (Acetamiprid 20
SP)@ 30ml+20ml/15 L water

30. remarks
• No symptoms of Brinjal Fruit and Shoot
Borer in tender shoot but there is a severe
infestation in fruits by BSFB.
• Jassid and Whitefly are found at the
undersurfce of the leaves. Among them
Whitefly infestation is quite high.
• Mite infestation is negligible.
• It is also observed that farmers mostly
depends on chemical measures than the
cultural ones.

31. o Name of the farmer: Sunil Debnath
o Crop area cultivated: 1 bigha
o Variety cultivated: Bullet lanka
o Stage of the crop: Fruiting
o Pest species encountered:
 Chilli mite
 Fruit Borer
 Chilli Aphid
 Thrips

32. Scirtothrips dorsalis
Thripidae
Thysanoptera
1. Adults suck cell sap from the tender leaves and stems
causing upward curling of leaves.
2. Emerged buds become brittle with brown scars on fruits.
3. Crumbling and shedding of leaves.

33. Common name Scientific name Family : Order Damage symptoms
Chilli mite Polyphagotarsonemus latus Tarsonemidae :
Acarina
•Nymphs and adults feed exclusively on
lower surface of leaves.
•Downward curling of leaves.
•Leaves turn dark green , lower surface
is brown in colour with shiny coating.
Fruit borer Helicoverpa armigera Noctuidae :
Lepidoptera
•Young larvae feed on flower buds , and
later on bore into the fruits and feed
sometimes on seeds.
•A circular hole is noticed at the base of
the pedicel.
Chilli aphid Aphis gossypii Aphididae :
Hemiptera
•Due to sucking of cell sap , the infested
plants turn pale with sticky appearance
and this results in crinkling and curling
of leaves .
•Stunted growth of plant.
•Secrete honey dew on which black
sooty mould develops.

34. Extent of damage of insect pests in
Chilli
Plant no. Count of pests per plant
Thrips Mite Aphid Fruit borer
1. 18 5 4 0
2. 20 2 6 0
3. 22 3 3 1
4. 17 3 7 0
5. 23 6 4 0
Average
count/Plant
20 4.4 4.8 0.2

35. Pest management in chilli
Name of the pest Measures taken (Farmer’s
practice)
Recommended Measures
Chilli thrips Actara(Thiomethoxam
25WG)@ 2.5-3 g/10lit water
 Rogor(Dimethoate 30EC)
@ 25-30 ml/15 lit of water
Sowing of maize surrounding the field as
border crop.
Deep summer ploughing
Chilli mite Spraying of KAKA (bio
insecticide) or BOOM TET
@ 20-25 ml/15 L water
Growing tolerant varieties like ‘Guntur’
type.
Introduction of Amblyseius ovalis as
predator.
Fruit borer Spraying of Bio-killer @ 15
ml/15 L water
Deep summer ploughing to destroy
hibernating pupae.
Use of pheromone trap such as ‘Helilure’.
Green peach aphid Rogor(Dimethoate 30 EC)
@25-30 ml/15 lit water
Sowing of mustard as border crop.
Mulching with aluminium foil.

36. A glimpse of infestation

37. Remarks
• Few symptoms of Chilli Fruit Borer in almost
mature fruit but there is a moderate to high
infestation Chilli Thrips .
• Mite and Aphids are found at the leaves. But their
infestation is quite low as the observed plot is
well treated with insecticides.
• Mite infestation is negligible.
• It is also observed that farmers mostly depends
on chemical measures than the cultural ones.

38. Study on insect pest incidence &
their extent of damage in
Watermelono Name of the farmer: Mahamad Bin
Mondal
o Crop area cultivated: 10 katha
o Variety cultivated: Sagar
o Stage of the crop: seedling
o Pest species encountered:
 Leaf miner

39. Major pest of Watermelon
• Leaf miner
• Scientific name : Liriomyza sativae
• Order: Diptera
• Family: Agromyzidae
• Damaging symptoms:
1. Yellow squiggly lines in the leaves where the leaf miner larvae
have literally bored their way through the leaf
2. Defoliation of leaves .
3. Spots and blotches appear on leaves.

40. Common name Scientific name Family : Order Damage symptoms
Thrips Thrips palmi Thripidae :
Thysanoptera
 Upward curling in
few plants

41. Extent of damage of Leaf miner
Plant no. Total leaf Infested leaf % Infestation
1. 10 3 30 %
2. 18 7 39%
3. 12 4 33%
4. 6 2 33%
5. 7 3 42%

42. Extent of damage of Thrips
Plant no. Total leaf Infested leaf % Infestation
1. 10 1 10%
2. 18 4 22%
3. 12 4 33%
4. 6 3 50%
5. 7 2 28%

43. Pest management in Watermelon
Name of the pest Measures taken
(Farmer’s practice)
Recommended
Measures
Leaf miner Jemini lure (
Pheromone trap @ 2
piece/acre ).
Actara(Thiomethoxam
25WG)@ 2.5-3 g/10lit
water.
Use of Bioneem as an
antifeedant.
Use of plastic mulch
to prevent pupation.
Introduction of
parasitic wasp
Diglyphus sp.

45. Remarks
• Low-moderate symptoms of Watermelon
thrips in the observed field
• High infestation of watermelon leaf
miner in the leaves.
• Other pest infestation is negligible.
• It is also observed that farmers mostly
depends on chemical measures than the
cultural ones.

48. TRADE NAME CHEMICAL COMPOSITON PRICE
KAKA CYPERMETHRIN 10EC Rs.180/50ml
TAFGOR DIMETHOATE 30EC Rs.73/100ml
HOTSHOT IMIDACLOPRID 20SL Rs.92/50ml
PRIMA ACETAMIPRID 20SP Rs.60/20g
KRITAP 50SP CARTAP HYDROCHLORIDE 50%SP Rs.50/25g
HAMLA 550 CHLOROPYRIPHOS 50% +
CYPERMETHRIN 5%EC
Rs.125/100ml
LANCEGOLD ACEPHATE 50%+
IMIDACLOPRID 1.8%SP
Rs.223/250gm
ACTARA THIOMETHOXAM 25%WG Rs.23/5g
DUPONT FERTERRA CHLORANTRANILIPROL 0.4%GR Rs. 976/4kg
JEMINI LURE (For Pheromone Trap, Valid for 2 years) Rs.130/1 Lure

49. PEST
MANAGEMENT
CHEMICAL FOR
GUAVA
PEST
MANAGEMENT
CHEMICAL FOR
POINTED
GOURD

50. PEST
MANAEMENT
CHEMICALS FOR
BRINJAL
PHEROMONE
TRAP FOR
WATERMELON
PEST
MANAGEMENT
CHEMICALS FOR
CHILLI

51.  Conclusion:
In our study we found that the farmers are more dependent
on the chemical control measures and some of them use
more than recommended doses which is harmful to the
agroecosystem and environment also.
So they should use judicious amount of pesticieds and also
go for the cultural and biological control measures and keep
the chemical measures as a last and emergency option.
We also found that there is a huge knowledge gap and new
strategies and technologies do not reach the farmer properly.

52.  We are very much thankful to the villagers of Darjeepara for their
wholehearted co-operation with us during our RAWE programme,
specially to SHREE JAYANTA SARKAR (OUR CONTACT FARMER)
,who helped us a lot in this programme.
 SpecialThanks to :-
 Dr. PRANAB DEBNATH.
 Dr. KUSAL ROY
 Dr. ASIM KUMAR MAITY
 Dr. ANIRBAN SARKAR
 Dr. ANIRUDDHA PRAMANIK
 PROF. DHANANJOY DUTTA (RAWE CO-ORDINATOR).
 PROF. SANKARACHARYA (RAWE ADVISOR).