Abstract
Abstract To study the phototactic responses of white‐backed planthopper , S ogatella furcifera ( H orváth) and brown planthopper, N ilaparvata lugens ( S tål) to different wavelengths, four colours of light traps (blue, green, yellow and red light‐emitting diodes) were placed in the same rice field along with a traditional black light trap. This study revealed that S . furcifera and N . lugens are more attracted to blue and green lights than that to yellow and red lights. During the 24 nights, compared with the black light trap, the blue LED trap could catch more rice planthoppers at 17 nights. Furthermore, catches of other species (moths and beetles) were substantially reduced in blue LED light traps. Multiple regression models were developed to assess the effect of weather factors on light trap catches of rice planthoppers. Rainfall and mean air temperature at a night mainly affected light trap catches of S . furcifera . Higher rainfall and lower temperature increased light trap catches of S . furcifera . However, wind speed was the main factor affecting the catches of N . lugens, and the lower incidence of catches was found in the night when wind speed exceeded 3.08 m/s. S. furcifera may be flying against wind at light wind nights by 0.3–1.5 m/s, whereas N. lugens may be flying down at strong wind nights by 1.5–3.08 m/s. Relative humidity did not significantly influence on trap catches. Consequently, light wavelengths, precipitation, average temperature and wind should be considered when monitoring rice planthoppers by light traps. Therefore, the blue LED light traps are worth using for monitoring planthoppers.
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Claims 8
Claim · model-written summary
Both planthopper species were more attracted to blue and green than yellow and red light.
- Treatment
- blue and green lightse0
- Outcome
- S . furcifera and N . lugense0
- Direction
- more attractede0
- Comparator
- yellow and red lightse0
Not reportedTaxon
Verbatim
e0“S . furcifera and N . lugens are more attracted to blue and green lights than that to yellow and red lights”
Claim · model-written summary
The blue LED trap caught more rice planthoppers than the black light trap on 17 of 24 nights.
- Taxon
- rice
Oryza sativae0 - Treatment
- blue LED trape0
- Outcome
- rice planthopperse0
- Direction
- moree0
- Value
- 17 nightse0
- Comparator
- black light trape0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During the 24 nights, compared with the black light trap, the blue LED trap could catch more rice planthoppers at 17 nights”
Claim · model-written summary
Blue LED traps caught substantially fewer moths and beetles.
- Treatment
- blue LED light trapse0
- Outcome
- catches of other species (moths and beetles)e0
- Direction
- substantially reducede0
Not reportedTaxonComparator
Verbatim
e0“catches of other species (moths and beetles) were substantially reduced in blue LED light traps”
Claim · model-written summary
Higher rainfall increased S. furcifera light trap catches.
Not reportedTaxonSetting
Verbatim
e0“Higher rainfall and lower temperature increased light trap catches of S . furcifera”
Claim · model-written summary
Lower temperature increased S. furcifera light trap catches.
Not reportedTaxon
Verbatim
e0“Higher rainfall and lower temperature increased light trap catches of S . furcifera”
Claim · model-written summary
N. lugens catches were lower above a wind speed of 3.08 m/s.
Not reportedTaxon
Verbatim
e0“wind speed was the main factor affecting the catches of N . lugens, and the lower incidence of catches was found in the night when wind speed exceeded 3.08 m/s”
Claim · model-written summary
Relative humidity did not significantly influence trap catches.
Not reportedTaxon
Verbatim
e0“Relative humidity did not significantly influence on trap catches”
Claim · model-written summary
The authors recommend blue LED traps for monitoring planthoppers.
- Outcome
- blue LED light traps are worth using for monitoring planthopperse0
Not reportedTaxon
Verbatim
e0“the blue LED light traps are worth using for monitoring planthoppers”
The same questions in other papers
light · pest · Oryza sativa (rice)Positive and negative results
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- no effect
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1 paper more in this group
See all 5 papers →trap barrier · pest · Oryza sativa (rice)Results agree
3 papers in the same direction as this paper
- positive
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Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.