Abstract
The physical spray efficacy was compared between unmanned helicopter and motorized knapsack sprayer for the application of pesticide in rice paddy field in Thailand. The unmanned helicopter treatment resulted in a significantly higher number of droplet density than that of the motorized knapsack sprayer treatment. In addition, droplet deposition did not differ between the two spraying techniques on the top and panicle positions. However, droplet deposition on the bottom position from the unmanned helicopter was higher than that from the motorized knapsack sprayer. The unmanned helicopter effectively reduced droplet losses to the ground compared with that of the motorized knapsack sprayer. With respect to droplet drift from sprayed area, the distance achieved by the unmanned helicopter was 3 m greater than that by the motorized knapsack sprayer. These results suggest that the efficacy of the unmanned helicopter was similar or greater than that of the motorized knapsack sprayer. Overall, we found that unmanned aerial vehicles improved performance and enabled rational pesticide application rice production in Thailand.
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Claims 6
Claim · model-written summary
Helicopter spraying gave significantly higher droplet density than knapsack spraying.
- Treatment
- unmanned helicopter treatmente0
- Outcome
- droplet densitye0
- Direction
- highere0
- Comparator
- motorized knapsack sprayer treatmente0
Not reportedTaxon
Verbatim
e0“The unmanned helicopter treatment resulted in a significantly higher number of droplet density than that of the motorized knapsack sprayer treatment.”
Claim · model-written summary
Droplet deposition at top and panicle positions did not differ between spraying techniques.
- Organ / stage
- top and panicle positionse0
- Treatment
- two spraying techniquese0
- Outcome
- droplet depositione0
- Direction
- did not differe0
Not reportedTaxonComparator
Verbatim
e0“droplet deposition did not differ between the two spraying techniques on the top and panicle positions.”
Claim · model-written summary
Helicopter spraying produced higher bottom-position deposition than knapsack spraying.
- Organ / stage
- bottom positione0
- Treatment
- unmanned helicoptere0
- Outcome
- droplet depositione0
- Direction
- highere0
- Comparator
- motorized knapsack sprayere0
Not reportedTaxon
Verbatim
e0“droplet deposition on the bottom position from the unmanned helicopter was higher than that from the motorized knapsack sprayer.”
Claim · model-written summary
Helicopter spraying reduced droplets lost to the ground.
- Treatment
- unmanned helicoptere0
- Outcome
- droplet losses to the grounde0
- Direction
- reducede0
- Comparator
- motorized knapsack sprayere0
Not reportedTaxon
Verbatim
e0“The unmanned helicopter effectively reduced droplet losses to the ground compared with that of the motorized knapsack sprayer.”
Claim · model-written summary
Helicopter droplet drift extended 3 m farther than knapsack spray drift.
- Treatment
- unmanned helicoptere0
- Outcome
- distancee0
- Direction
- greatere0
- Value
- 3 me0
- Comparator
- motorized knapsack sprayere0
Not reportedTaxon
Verbatim
e0“the distance achieved by the unmanned helicopter was 3 m greater than that by the motorized knapsack sprayer.”
Claim · model-written summary
Authors found UAVs improved application performance in rice production.
Not reportedTaxon
Verbatim
e0“unmanned aerial vehicles improved performance and enabled rational pesticide application rice production in Thailand.”