Abstract
AbstractA field experiment was conducted during February to July 2024 at Pandit Jawaharlal Nehru College of Agriculture and Research Institute, Karaikal, Puducherry, to study the effect of herbicide application using Unmanned Aerial Vehicle (UAV) on the diverse weed flora, cotton growth, yield and economics. The experiment consisted of seven treatments, viz. pre-emergence application (PE) of pendimethalin 1.0 kg/ha using UAV with spray volume of 25, 37.5, 50 L/ha; pendimethalin 1.0 kg/ha PE using knapsack sprayer with spray volume of 500 L/ha water, inter-cultivation twice at 20 and 45 days after seeding (DAS), inter-cultivation twice followed by (fb) manual weeding at 60 DAS and unweeded control. A randomized block design with three replications was used. The grasses were dominant in the experimental plot, with 57.8 % relative density of Echinochloa colona. Pendimethalin 1.0 kg/ha on 3 DAS using UAV with a spray volume of 37.5 L/ha resulted in greater reduction in total weed density and biomass with better cotton growth (plant height), yield parameters (number of bolls/plant, boll weight), yield, higher net return and benefit:cost ratio. Uncontrolled weeds caused 87.7 % yield loss in summer cotton of the coastal deltaic ecosystem.
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Claims 6
Claim · model-written summary
Pendimethalin 1.0 kg/ha applied pre-emergence by UAV at 37.5 L/ha gave a greater reduction in total weed density and biomass.
- Taxon
- summer cotton
Gossypium hirsutumt0 - Treatment
- Pendimethalin 1.0 kg/ha on 3 DAS using UAV with a spray volume of 37.5 L/hae0
- Interactor
- weede1weed
- Outcome
- total weed density and biomasse1
- Direction
- greater reductione1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pendimethalin 1.0 kg/ha on 3 DAS using UAV with a spray volume of 37.5 L/ha”
e1“greater reduction in total weed density and biomass”
t0“summer cotton”
Claim · model-written summary
The same UAV pendimethalin treatment gave better cotton growth (plant height).
- Taxon
- summer cottonGossypium hirsutumt0
- Treatment
- Pendimethalin 1.0 kg/ha on 3 DAS using UAV with a spray volume of 37.5 L/hae0
- Outcome
- plant heighte1
- Direction
- bettere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pendimethalin 1.0 kg/ha on 3 DAS using UAV with a spray volume of 37.5 L/ha”
e1“better cotton growth (plant height)”
t0“summer cotton”
Claim · model-written summary
The same UAV pendimethalin treatment gave better yield parameters (number of bolls per plant, boll weight).
- Taxon
- summer cottonGossypium hirsutumt0
- Treatment
- Pendimethalin 1.0 kg/ha on 3 DAS using UAV with a spray volume of 37.5 L/hae0
- Outcome
- number of bolls/plant, boll weighte1
- Direction
- increaseinferrede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pendimethalin 1.0 kg/ha on 3 DAS using UAV with a spray volume of 37.5 L/ha”
e1“yield parameters (number of bolls/plant, boll weight)”
t0“summer cotton”
Claim · model-written summary
The same UAV pendimethalin treatment gave better cotton yield.
- Taxon
- summer cottonGossypium hirsutumt0
- Treatment
- Pendimethalin 1.0 kg/ha on 3 DAS using UAV with a spray volume of 37.5 L/hae0
- Outcome
- yielde1
- Direction
- increaseinferrede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pendimethalin 1.0 kg/ha on 3 DAS using UAV with a spray volume of 37.5 L/ha”
e1“yield, higher net return and benefit:cost ratio”
t0“summer cotton”
Claim · model-written summary
The same UAV pendimethalin treatment gave higher net return and benefit:cost ratio.
- Taxon
- summer cottonGossypium hirsutumt0
- Treatment
- Pendimethalin 1.0 kg/ha on 3 DAS using UAV with a spray volume of 37.5 L/hae0
- Outcome
- net return and benefit:cost ratioe1
- Direction
- highere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pendimethalin 1.0 kg/ha on 3 DAS using UAV with a spray volume of 37.5 L/ha”
e1“yield, higher net return and benefit:cost ratio”
t0“summer cotton”
Claim · model-written summary
Uncontrolled weeds caused an 87.7% yield loss in summer cotton of the coastal deltaic ecosystem.
- Taxon
- summer cottonGossypium hirsutume0
- Treatment
- Uncontrolled weedse0
- Interactor
- weedse0weed
- Outcome
- yield losse0
- Direction
- losse0
- Value
- 87.7 %e0
- Setting
- coastal deltaic ecosysteme0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Uncontrolled weeds caused 87.7 % yield loss in summer cotton of the coastal deltaic ecosystem”
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