2nd Yr. Final Exam

Question 1

How many percent of global crop loss is caused by destructive insect pest?

Answer 1

26 %

Question 2

It is the scientific study of pest and pest control strategies that recognize the financial impact insects have on the industry, agriculture, and human society in general.

Answer 2

Economic entomology

Question 3

Is the monetary value lost to the commodity due to injury by the pest (e.g. spoilage, reduction in yield, loss of quality, etc.

Answer 3

Damage

Question 4

Is defined as the physical harm or distruction to the valued commodity caused by the presence or activities of a pest (e.g., consuming leave, tunneling in wood, feeding on blood, etc.)

Answer 4

Injury

Question 5

True or false.
Any level of injury is caused by damage, but not all levels of injury cause injury.

Answer 5

False. Any level of pest infestation causes injury, but not all levels of injury are caused by damage.

Question 6

Trrue or false.
Plants often tolerate small injuries with no apparent damage and sometimes even overcompensate by channeling more energy or resources into growth.

Answer 6

True

Question 7

True or false.
A low level of injury may not cause enough damage to justify pest control operations time or expense.

Answer 7

True

Question 8

It is the break even point where A = B

Answer 8

Economic injury level

Question 9

Is point below the economic injury level at which a decision is made to apply a treatment of the pest.

Answer 9

The economic threshold level( ETL)

Question 10

ETL is also called ?

Answer 10

Action threshold