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R.K. Panse
Asstt. Prof. (Entomology)
JNKVV-College of Agriculture, Balaghat
Lecture 4
Economic importance of insect pests
Subject: Principles of Integrated pest and Disease Management
Economic Importance
 Serious impact on economic output of farm either directly orindirectly
 Contaminate food grains
Losses caused by different pests in India
(Dhaliwal et.al,2015: Indian Journal of
Entomology,77(2) :165-168)
Due to spoilage by pests
15.7 % food grain loss
Rs. 2,37,600 crore loss
I. Destroyer of crops
chewing
boring
gall making
root eating
injury by egg laying
injury by nest making
injury due to mutualism
Aphids on cotton
Thrips on chilli
Economic Importance
Contd…..
II. Annoy and injure man and animals
monotonous sound
foul odour
pinch and chew skin
inject venoms
make home in and on body
disseminate diseases
destroyer of useful articles

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Lec. 4 pidm rkp

  • 1. R.K. Panse Asstt. Prof. (Entomology) JNKVV-College of Agriculture, Balaghat Lecture 4 Economic importance of insect pests Subject: Principles of Integrated pest and Disease Management
  • 2. Economic Importance  Serious impact on economic output of farm either directly orindirectly  Contaminate food grains Losses caused by different pests in India (Dhaliwal et.al,2015: Indian Journal of Entomology,77(2) :165-168) Due to spoilage by pests 15.7 % food grain loss Rs. 2,37,600 crore loss
  • 3. I. Destroyer of crops chewing boring gall making root eating injury by egg laying injury by nest making injury due to mutualism Aphids on cotton Thrips on chilli Economic Importance
  • 4. Contd….. II. Annoy and injure man and animals monotonous sound foul odour pinch and chew skin inject venoms make home in and on body disseminate diseases destroyer of useful articles