Pest Management and Impact on Agriculture

The video explores the relationship between insects and humans, focusing on economically important insects. It categorizes insects into injurious, beneficial, and helpful groups, with a focus on agricultural entomology. The video defines pests and discusses factors contributing to their status, such as economic impact and environmental changes. It highlights the significant economic losses caused by insect pests and examines reasons for pest outbreaks, including human activities and environmental factors. The session concludes with a preview of the next class.

Which category of insects causes damage to crops and is studied under agricultural entomology?

• Aesthetic insects

• Beneficial insects

• Injurious insects

• Helpful insects

What is a primary product obtained from honeybees?

• Lac

• Cotton

• Honey

• Silk

Which insects are known for their role in pollination?

• Termites

• Ants

• Butterflies

• Beetles

What is the main criterion for an organism to be considered a pest?

• Its color

• Its speed

• Its population causing economic loss

• Its size

From which language is the word 'pest' derived?

• Italian

• Spanish

• French

• German

What percentage of crop loss is attributed to insects in the cropping ecosystem?

• 50%

• 26%

• 10%

• 75%

Which human activity is a major reason for pest outbreaks?

• Urbanization

• Deforestation

• Industrialization

• Fishing

How does the use of nitrogenous fertilizers affect pest populations?

• Eliminates pests

• Increases pest populations

• Has no effect

• Decreases pest populations

What happens when a foreign pest is introduced to a new area?

• It usually dies out

• It finds a natural enemy

• It may thrive due to lack of natural enemies

• It becomes less harmful

What is a consequence of storing large quantities of grains?

• Improved grain quality

• No change in pest levels

• Increased pest colonization

• Decreased pest activity