Control insect in field mechanical method. Light traps

 Information given to farmer’s:- 

Light traps make use of a light source to attract night- flying insects. They are especially useful to monitor certain species of moths. Catching moth in the light trap will tell the farmer’s that is time to start searching for eggs or caterpillars in the field.

Different light source can be used, ranging from simple oil lamp to different types of electric bulbs. Special light sources called back- light have been developed and are particularly efficient because of the type of the light they emit. They should be considered in situations when other light sources (houses, street lights) or competing with the traps.

While the light source attracts the insects, traps need other device to kill or capture them. often this is a container with water that is placed under the light source. The moths that circle around the light will trap in the water and can be counted the next morning. It is recommended to add a bite of soap to the water. Instead of water, it is also possible to used sticky plates. 

Suitable time of light trap used in field:- Evening 07 pm to 10 pm. 

Advantage:- 

Reduce the insect pest(adult) population in field.

 Light traps are generally used a monitoring tools and will not have much insert as a control measures.

It is a mechanical control of insect.

Less the insect population into economic thresh sold (ETL). 

Disturb the life cycle of insect.

Disadvantage:-

Daily observation of traps will show that not only pest insects but also some natural enemies may be caught. If the trap appear to kill large number of beneficial insects it is better to take out the traps.