CPrt22 Lec 3.1 (Physical approach) Flashcards
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.
Physical and Mechanical Pest Control
These are different from cultural control because actions are taken specifically for controlling the pest and not merely modifications of existing management practices.
Physical and Mechanical Pest Control
Manipulation where pest activity and metabolic rate are influenced by temperature.
Temperature manipulation
This method is widely used in greenhouse operations to control many insects, nematodes, weed seeds, and especially soil-borne plant pathogens.
Heat and Steam Sterilization
This method of control is not economically feasible under field conditions.
Heat and Steam Sterilization
Method used to burn stubbles and crop residues after harvest to kill pests that they may harbor.
Flaming
A common practice in the Philippines to prevent molds and other pests from attacking rice grains and coconut for copra.
Sun drying
HWT stands for ______–
Hot Water Treatment
____________ 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.
How water
Hot water treatment of rice seeds at 52-54°C for 15 minutes is used to control ____________.
White tip nematode
Hot water treatment of rice seeds at _________ for ___ minutes is used to control white tip nematode.
52-54°C, 15 minutes
Hot Water Treatment of wheat seeds at ________ for 10 minutes is used to control loose smut of wheat.
50-52°C
Rinsing melon for 15 seconds with hot water (______) resulted in a significant reduction of fruit decay while maintaining fruit quality after prolonged storage.
59°C
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 ________.
fruit decay
HAT means _____–
Hot Air Treatment
Treatment of certain storage products with warm air removes excess moisture from their surfaces and hastens the healing of wounds
Hot Air Treatment
Hot Air Treatment is also called ___________.
Curing
Disadvantage of using sound waves for pest control
Habituation to the sound
Ionizing radiation such as _______ will kill insect pests and pathogens.
X-rays and gamma rays
Color that attracts insects the most
Yellow
One of the most typical responses to light
Phototaxis
Positive phototaxis
Attraction
Negative phototaxis
Repulsion
Insect light traps using _______ were used widely to control rice stem borers
Blue fluorescent light
Light trapping cannot be used to control plant pathogens.
True or False
True
AWD stands for
Alternate wetting and drying
Alternate wetting and drying in rice fields can reduce _________ damage
Brown planthopper
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.
Cold Storage
Methods under High Lethal Temperature
- Heat and Steam Sterilization
- Flaming
- Sun drying
- Hot Water Treatment
- Hot Air Treatment
