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Insect Light Traps

Which crops need Light Traps?

1. Generally, field crops like cereals (rice, maize, sorghum), millets, pulses (chickpea, pigeon pea, lentil, green gram), flowers, vegetables (okra, cauliflower, cabbage, tomato, brinjal) etc require Light Traps

2. Even horticultural crops (mango, litchi, pomegranate, apple, guava, coconut, banana) require Light Traps

How many Light Traps are required per acre?

2 (Two) Light Traps are required per acre

Which stages of the crop require Light Traps?

Each and every stage of the crop require Light Traps meaning from the beginning of the planting of the crop until the end of the harvest (for short-term crops)

What time should the Light Traps be activated?

Light Traps need to be switched on or made available from 6 pm to 9 pm when the pests are most active

What are the different colours of Lights used in Light Traps?

1. Black Lights (Bulbs that emit Ultra Violet Wavelengths) - Best Option

2. Blue Lights

3. White Incandescent Lights (or Fluorescent Bulbs)

4. Yellow Lights

5. Green Lights

6. Red Lights

What should be the height of the Light Traps?

Generally, it is advised that the Light Traps be placed at least 3 ft to 6 ft above the ground

What is the distance between the Light Traps?

Optimally, the Light Traps should be of equal distance from one another

What problem is solved by Light Traps?

1. Light Traps acts as a warning sign on the build-up of the pests

2. Light Traps control the next generation of pests as the parents are destroyed

What are the options in Light Traps?

Three Options are available
  1. Oil Lamps (For example, Kerosene Lamp)
  2. Electrical Lamps
  3. Battery Operated Lamps (Solar)

What is the disadvantage of Light Traps?

Light Traps trap even the beneficial insects and hence can be a disadvantage at times.


  1. Also they attract insects from adjoining fields,which unnecessarly increase pest in our field.Hence for effective results,it should be practised on community basis,ie all the surrounding farmers also install them.


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