Abstract
Target spot, caused by Corynespora cassiicola, prematurely defoliates and occasionally reduces cotton yield across the southeastern United States. Reaction of the cultivars Deltapine 1137 B2RF, Deltapine 1252 B2RF, Fibermax 1944 GLB2, PhytoGen 499 WRF, PhytoGen 575 WRF, and Stoneville 6448 GLB2 to target spot and lint yield as influenced by a full-season Headline + Bravo Ultrex fungicide program was assessed for 3 years in southwest Alabama. Significantly greater final % and relative area under the disease curve (relAUC) season-long defoliation was recorded for PhytoGen 499 WRF than the other cultivars, which had similarly lower defoliation values. A significant yield gain of 92 kg of lint/ha valued at $142/ha across all cultivars was obtained with the fungicide program. In addition, PhytoGen 499 WRF and Fibermax 1944 GLB2 had significantly lower defoliation and greater yield gains (189 and 263 kg of lint/ha, respectively) with the fungicide than no fungicide program. Hardlock incidence was greater in 2016 than in preceding years and did not differ by fungicide program. Open and unopen boll counts were similar across all cultivars and fungicide programs. Study results indicate that partially resistant cultivars may be an effective tool for managing target spot in cotton.
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Claims 10
Claim · model-written summary
PhytoGen 499 WRF had greater final defoliation than the other cultivars.
- Taxon
- cotton
Gossypium hirsutumt0 - Material
- PhytoGen 499 WRFe0
- Outcome
- final %e0
- Direction
- greatere0
- Comparator
- the other cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significantly greater final % and relative area under the disease curve (relAUC) season-long defoliation was recorded for PhytoGen 499 WRF than the other cultivars”
t0“cotton”
Claim · model-written summary
PhytoGen 499 WRF had greater season-long relAUC defoliation than other cultivars.
- Taxon
- CottonGossypium hirsutumt0
- Material
- PhytoGen 499 WRFe0
- Outcome
- relative area under the disease curve (relAUC) season-long defoliatione0
- Direction
- greatere0
- Comparator
- the other cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significantly greater final % and relative area under the disease curve (relAUC) season-long defoliation was recorded for PhytoGen 499 WRF than the other cultivars”
t0“Cotton”
Claim · model-written summary
Fungicide increased lint yield across cultivars by 92 kg of lint/ha.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- fungicide programe0
- Outcome
- yield gaine0
- Direction
- gaine0
- Value
- 92 kg of lint/hae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A significant yield gain of 92 kg of lint/ha valued at $142/ha across all cultivars was obtained with the fungicide program”
t0“Cotton”
Claim · model-written summary
Fungicide reduced defoliation in PhytoGen 499 WRF and Fibermax 1944 GLB2.
- Taxon
- CottonGossypium hirsutumt0
- Material
- PhytoGen 499 WRF and Fibermax 1944 GLB2e0
- Treatment
- fungicidee0
- Outcome
- defoliatione0
- Direction
- lowere0
- Comparator
- no fungicide programe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PhytoGen 499 WRF and Fibermax 1944 GLB2 had significantly lower defoliation and greater yield gains (189 and 263 kg of lint/ha, respectively) with the fungicide than no fungicide program”
t0“Cotton”
Claim · model-written summary
Fungicide increased PhytoGen 499 WRF yield by 189 kg of lint/ha.
- Taxon
- CottonGossypium hirsutumt0
- Material
- PhytoGen 499 WRFe0
- Treatment
- fungicidee0
- Outcome
- yield gainse0
- Direction
- greatere0
- Value
- 189e0
- Comparator
- no fungicide programe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PhytoGen 499 WRF and Fibermax 1944 GLB2 had significantly lower defoliation and greater yield gains (189 and 263 kg of lint/ha, respectively) with the fungicide than no fungicide program”
t0“Cotton”
Claim · model-written summary
Fungicide increased Fibermax 1944 GLB2 yield by 263 kg of lint/ha.
- Taxon
- CottonGossypium hirsutumt0
- Material
- Fibermax 1944 GLB2e0
- Treatment
- fungicidee0
- Outcome
- yield gainse0
- Direction
- greatere0
- Value
- 263 kg of lint/hae0
- Comparator
- no fungicide programe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PhytoGen 499 WRF and Fibermax 1944 GLB2 had significantly lower defoliation and greater yield gains (189 and 263 kg of lint/ha, respectively) with the fungicide than no fungicide program”
t0“Cotton”
Claim · model-written summary
Hardlock incidence was greater in 2016 than earlier years.
- Taxon
- CottonGossypium hirsutumt0
- Outcome
- Hardlock incidencee0
- Direction
- greatere0
- Comparator
- preceding yearse0
- Setting
- 2016e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Hardlock incidence was greater in 2016 than in preceding years”
t0“Cotton”
Claim · model-written summary
Hardlock incidence did not differ by fungicide program.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- fungicide programe0
- Outcome
- Hardlock incidencee0
- Direction
- did not differe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Hardlock incidence was greater in 2016 than in preceding years and did not differ by fungicide program”
t0“Cotton”
Claim · model-written summary
Open and unopened boll counts were similar across cultivars and fungicide programs.
- Taxon
- CottonGossypium hirsutumt0
- Outcome
- Open and unopen boll countse0
- Direction
- similare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Open and unopen boll counts were similar across all cultivars and fungicide programs”
t0“Cotton”
Claim · model-written summary
Partially resistant cultivars may help manage cotton target spot.
- Taxon
- cottonGossypium hirsutume0
- Outcome
- partially resistant cultivars may be an effective tool for managing target spote0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“partially resistant cultivars may be an effective tool for managing target spot in cotton”
The same questions in other papers
fungicide · yield · Gossypium hirsutum (cotton)Positive and negative results
6 papers in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
- positive
4 papers more in this group
See all 8 papers →fungicide · disease · Gossypium hirsutum (cotton)Positive and negative results
9 in the opposite direction
- positive
- positive
- positive
6 papers more in this group
See all 10 papers →fungicide · pest · Gossypium hirsutum (cotton)Results agree
1 paper in the same direction as this paper
- positive
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.