Abstract
An experiment was conducted during rainy (kharif) season of 2006 – 09 to study the efficacy of Pseudomonas fluorescens against foliar diseases of cotton (Gossypium hirsutum L.). Pooled data of 3 years showed that seed treatment with P. fluorescens Pf 1 @ 10 g/kg seed and foliar spray @ 0.2% at 30, 40, 50, 60, 70, 80 and 90 days after sowing gave maximum control of bacterial blight (40.25%), Alternaria leaf spot (35.16%), Helminthosporium leaf spot (50.50%) and Myrothecium leaf spot (45.37%) and recorded maximum yield of 1.46 tonnes/ha against 1.19 tonnes/ha in control. Highest benefit:cost ratio of 1.92 was obtained with seed treatment with P. fluorescens Pf 1 @ 10 g/kg seed + 7 foliar sprays @ 0.2% at 30, 40, 50, 60, 70, 80 and 90 days after sowing and seed treatment with P. fluorescens Pf 1 @ 10 g/kg seed + 5 foliar sprays @ 0.2% at 30, 50, 70 and 90 days after sowing recorded 1.87 benefit:cost ratio as against 1.66 in 7 water sprays. Seed treatment with P. fluorescens Pf 1, followed by 0.2% foliar spray of the same at 10 days interval starting from 30 days after sowing is cost effective in managing important foliar diseases, viz bacterial blight and leaf spots caused by Alternaria, Helminthosporium and Myrothecium.
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Claims 8
Claim · model-written summary
P. fluorescens seed treatment and foliar sprays gave maximum control of bacterial blight.
- Taxon
- cotton
Gossypium hirsutumt0 - Treatment
- seed treatment with P. fluorescens Pf 1 @ 10 g/kg seed and foliar spray @ 0.2% at 30, 40, 50, 60, 70, 80 and 90 days after sowinge1
- Interactor
- bacteriale0pathogen
- Outcome
- bacterial blighte0
- Direction
- maximum controle1
- Value
- 40.25%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“bacterial blight (40.25%)”
e1“seed treatment with P. fluorescens Pf 1 @ 10 g/kg seed and foliar spray @ 0.2% at 30, 40, 50, 60, 70, 80 and 90 days after sowing gave maximum control”
t0“cotton”
Claim · model-written summary
P. fluorescens seed treatment and foliar sprays gave maximum control of Alternaria leaf spot.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- seed treatment with P. fluorescens Pf 1 @ 10 g/kg seed and foliar spray @ 0.2% at 30, 40, 50, 60, 70, 80 and 90 days after sowinge1
- Interactor
- Alternaria
Alternariae0pathogen - Outcome
- Alternaria leaf spote0
- Direction
- maximum controle1
- Value
- 35.16%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Alternaria leaf spot (35.16%)”
e1“seed treatment with P. fluorescens Pf 1 @ 10 g/kg seed and foliar spray @ 0.2% at 30, 40, 50, 60, 70, 80 and 90 days after sowing gave maximum control”
t0“cotton”
Claim · model-written summary
P. fluorescens seed treatment and foliar sprays gave maximum control of Helminthosporium leaf spot.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- seed treatment with P. fluorescens Pf 1 @ 10 g/kg seed and foliar spray @ 0.2% at 30, 40, 50, 60, 70, 80 and 90 days after sowinge1
- Interactor
- Helminthosporium
Helminthosporiume0pathogen - Outcome
- Helminthosporium leaf spote0
- Direction
- maximum controle1
- Value
- 50.50%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Helminthosporium leaf spot (50.50%)”
e1“seed treatment with P. fluorescens Pf 1 @ 10 g/kg seed and foliar spray @ 0.2% at 30, 40, 50, 60, 70, 80 and 90 days after sowing gave maximum control”
t0“cotton”
Claim · model-written summary
P. fluorescens seed treatment and foliar sprays gave maximum control of Myrothecium leaf spot.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- seed treatment with P. fluorescens Pf 1 @ 10 g/kg seed and foliar spray @ 0.2% at 30, 40, 50, 60, 70, 80 and 90 days after sowinge1
- Interactor
- Myrothecium
Myrotheciume0pathogen - Outcome
- Myrothecium leaf spote0
- Direction
- maximum controle1
- Value
- 45.37%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Myrothecium leaf spot (45.37%)”
e1“seed treatment with P. fluorescens Pf 1 @ 10 g/kg seed and foliar spray @ 0.2% at 30, 40, 50, 60, 70, 80 and 90 days after sowing gave maximum control”
t0“cotton”
Claim · model-written summary
The treatment yielded 1.46 tonnes/ha compared with 1.19 tonnes/ha in control.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- seed treatment with P. fluorescens Pf 1 @ 10 g/kg seed and foliar spray @ 0.2% at 30, 40, 50, 60, 70, 80 and 90 days after sowinge1
- Interactor
- P. fluorescens Pf 1
.JPG?width=60)
Pseudomonas fluorescense1biocontrol_agent - Outcome
- yielde0
- Direction
- maximume0
- Value
- 1.46 tonnes/hae0
- Qualifier
- 1.19 tonnes/hae0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.JPG?width=500)
Verbatim
e0“recorded maximum yield of 1.46 tonnes/ha against 1.19 tonnes/ha in control”
t0“cotton”
e1“seed treatment with P. fluorescens Pf 1 @ 10 g/kg seed and foliar spray @ 0.2% at 30, 40, 50, 60, 70, 80 and 90 days after sowing”
Claim · model-written summary
Seven sprays gave the highest benefit:cost ratio of 1.92.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- seed treatment with P. fluorescens Pf 1 @ 10 g/kg seed + 7 foliar sprays @ 0.2% at 30, 40, 50, 60, 70, 80 and 90 days after sowinge0
- Outcome
- benefit:cost ratioe0
- Direction
- Higheste0
- Value
- 1.92e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Highest benefit:cost ratio of 1.92 was obtained with seed treatment with P. fluorescens Pf 1 @ 10 g/kg seed + 7 foliar sprays @ 0.2% at 30, 40, 50, 60, 70, 80 and 90 days after sowing”
t0“cotton”
Claim · model-written summary
Five sprays gave a benefit:cost ratio of 1.87 versus 1.66 with water sprays.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- seed treatment with P. fluorescens Pf 1 @ 10 g/kg seed + 5 foliar sprays @ 0.2% at 30, 50, 70 and 90 days after sowinge0
- Outcome
- benefit:cost ratioe0
- Value
- 1.87e0
- Qualifier
- 1.66e0
- Comparator
- 7 water sprayse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seed treatment with P. fluorescens Pf 1 @ 10 g/kg seed + 5 foliar sprays @ 0.2% at 30, 50, 70 and 90 days after sowing recorded 1.87 benefit:cost ratio as against 1.66 in 7 water sprays”
t0“cotton”
Claim · model-written summary
Seed treatment followed by 0.2% sprays every ten days from 30 days after sowing was judged cost effective for foliar disease management.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Seed treatment with P. fluorescens Pf 1, followed by 0.2% foliar spray of the same at 10 days interval starting from 30 days after sowinge0
- Outcome
- cost effective in managing important foliar diseasese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed treatment with P. fluorescens Pf 1, followed by 0.2% foliar spray of the same at 10 days interval starting from 30 days after sowing is cost effective in managing important foliar diseases”
t0“cotton”
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