CPrt22 Lec 3.1 (Physical approach)

Question 2

Pest control that are direct or indirect (non-chemical) measures that destroy pests outright or make the environment unsuitable for their entry, dispersal, survival, or reproduction.

Answer 2

Physical and Mechanical Pest Control

Question 3

These are different from cultural control because actions are taken specifically for controlling the pest and not merely modifications of existing management practices.

Answer 3

Physical and Mechanical Pest Control

Question 4

Manipulation where pest activity and metabolic rate are influenced by temperature.

Answer 4

Temperature manipulation

Question 5

This method is widely used in greenhouse operations to control many insects, nematodes, weed seeds, and especially soil-borne plant pathogens.

Answer 5

Heat and Steam Sterilization

Question 6

This method of control is not economically feasible under field conditions.

Answer 6

Heat and Steam Sterilization

Question 7

Method used to burn stubbles and crop residues after harvest to kill pests that they may harbor.

Answer 7

Flaming

Question 8

A common practice in the Philippines to prevent molds and other pests from attacking rice grains and coconut for copra.

Answer 8

Sun drying

Question 9

HWT stands for ______–

Answer 9

Hot Water Treatment

Question 10

____________ is used to kill any pathogen which may be present inside seed coats, bulb scales, etc. or which may be present in external surfaces or wounds of fruits.

Answer 10

How water

Question 11

Hot water treatment of rice seeds at 52-54°C for 15 minutes is used to control ____________.

Answer 11

White tip nematode

Question 12

Hot water treatment of rice seeds at _________ for ___ minutes is used to control white tip nematode.

Answer 12

52-54°C, 15 minutes

Question 13

Hot Water Treatment of wheat seeds at ________ for 10 minutes is used to control loose smut of wheat.

Answer 13

50-52°C

Question 14

Rinsing melon for 15 seconds with hot water (______) resulted in a significant reduction of fruit decay while maintaining fruit quality after prolonged storage.

Answer 14

59°C

Question 15

Exported mangoes are immersed in hot water in temperatures that range from 46°C - 52°C for periods that also depend on variety to minimize pathogens causing ________.

Answer 15

fruit decay

Question 16

HAT means _____–

Answer 16

Hot Air Treatment

Question 17

Treatment of certain storage products with warm air removes excess moisture from their surfaces and hastens the healing of wounds

Answer 17

Hot Air Treatment

Question 18

Hot Air Treatment is also called ___________.

Answer 18

Curing

Question 19

Disadvantage of using sound waves for pest control

Answer 19

Habituation to the sound

Question 20

Ionizing radiation such as _______ will kill insect pests and pathogens.

Answer 20

X-rays and gamma rays

Question 21

Color that attracts insects the most

Answer 21

Yellow

Question 22

One of the most typical responses to light

Answer 22

Phototaxis

Question 23

Positive phototaxis

Answer 23

Attraction

Question 24

Negative phototaxis

Answer 24

Repulsion

Question 25

Insect light traps using _______ were used widely to control rice stem borers

Answer 25

Blue fluorescent light

Question 26

Light trapping cannot be used to control plant pathogens. True or False

Answer 26

True

Question 27

AWD stands for

Answer 27

Alternate wetting and drying

Question 28

Alternate wetting and drying in rice fields can reduce _________ damage

Answer 28

Brown planthopper

Question 29

Large storage facilities and refrigerated trucks and vans are practiced in highly developed countries because they need it badly for transport especially for high-valued fruits and vegetables to far-flung areas.

Answer 29

Cold Storage

Question 30

Methods under High Lethal Temperature

Answer 30

1. Heat and Steam Sterilization 2. Flaming 3. Sun drying 4. Hot Water Treatment 5. Hot Air Treatment