Abstract
Unmanned aerial vehicles (UAVs), as emerging plant protection machinery, have the advantages of high operational efficiency, high speed, and low drift. The current study aimed to elucidate the characteristics of droplet distribution and drift, control efficiency on cotton aphids and spider mites, and attachment and absorption of cotton leaves during UAV spraying. Kromekote card and filter paper are used as samplers to collect droplets, and the droplet density, coverage rate, deposition, and drift percentage are statistically analyzed. The pooled results showed that the droplet uniformity, the droplet coverage rate, the deposition, and the drifting ability are higher when the UAV flight height was 2 m. The control effects by UAV spraying on cotton aphids and spider mites were 63.7% and 61.3%, respectively. These values are slightly inferior to those obtained through boom spraying. Cotton leaf attachment and absorption of spirodiclofen after UAV spraying were slightly lower than those after boom spraying, therefore, the control efficiency of cotton pests is slightly different. According to the different flight height operations by the UAV sprayer, the drift capability of the droplets at 2 m flight height was large, and the droplet uniformity and deposition were satisfactory. The research results could provide the theoretical basis and technical support for UAV operation.
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Claims 5
Claim · model-written summary
At 2 m UAV flight height, droplet uniformity, coverage, deposition and drifting ability were higher.
- Taxon
- cotton
Gossypium hirsutumt0 - Treatment
- UAV flight height was 2 me0
- Outcome
- droplet uniformity, the droplet coverage rate, the deposition, and the drifting abilitye0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“droplet uniformity, the droplet coverage rate, the deposition, and the drifting ability are higher when the UAV flight height was 2 m”
t0“Cotton Aphids and Spider Mites”
Claim · model-written summary
UAV spraying controlled cotton aphids by 63.7%.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- UAV sprayinge0
- Interactor
- aphidsAphidomorphae0pest
- Outcome
- control effectse0
- Value
- 63.7%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“control effects by UAV spraying on cotton aphids and spider mites were 63.7% and 61.3%, respectively”
Claim · model-written summary
UAV spraying controlled cotton spider mites by 61.3%.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- UAV sprayinge0
- Interactor
- spider mitesTetranychidaee0pest
- Outcome
- control effectse0
- Value
- 61.3%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“control effects by UAV spraying on cotton aphids and spider mites were 63.7% and 61.3%, respectively”
Claim · model-written summary
UAV pest control effects were slightly inferior to boom spraying.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- UAV sprayingt0
- Interactor
- aphidsAphidomorphat0pest
- Outcome
- These valuese0
- Direction
- slightly inferiore0
- Comparator
- boom sprayinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These values are slightly inferior to those obtained through boom spraying”
t0“control effects by UAV spraying on cotton aphids and spider mites were 63.7% and 61.3%, respectively”
Claim · model-written summary
Cotton leaf attachment and absorption of spirodiclofen were slightly lower after UAV spraying than boom spraying.
- Taxon
- CottonGossypium hirsutume0
- Treatment
- UAV sprayinge0
- Outcome
- leaf attachment and absorption of spirodiclofene0
- Direction
- slightly lowere0
- Comparator
- boom sprayinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cotton leaf attachment and absorption of spirodiclofen after UAV spraying were slightly lower than those after boom spraying”
The same questions in other papers
application · Aphidomorpha · Gossypium hirsutum (cotton)Positive and negative results
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See all 8 papers →application · nutrient: content · Gossypium hirsutum (cotton)Positive and negative results
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See all 50 papers →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.