Abstract
An investigation was conducted during July, 2019–February, 2020 and July, 2020–February, 2021 at Regional Agricultural Research Station, Lam, Guntur, to assess the influence of weather factors on the progression of Corynespora leaf spot in cotton. The study revealed the maximum and minimum temperatures, evening relative humidity and number of rainy days were critical factors. Another independent field experiment conducted to assess the losses due to Corynespora leaf spot by the application of one to five sprays of propiconazole at 0.1% along with control, in randomized block design, with four replications, showed the lowest per cent disease index (7.4 PDI) and the highest yield (3060 kg ha-1) with five sprays. Per cent disease control and yield showed positive correlation whereas PDI showed negative correlation with number of sprays. Yield and avoidable yield loss showed negative correlation with PDI. Regression analysis indicated that every additional spray resulted in reduction of PDI by 4.89 with goodness of fit (R2) of 98%; increase of PDC by 13.50% with R2 of 99% and promotion of yield to 178.80% in pooled analysis data with R2 97%. Regression analysis of PDI as independent and yield, avoidable yield loss as dependent variables registered increase in 1% PDI resulted in the reduction of yield to 35.41 times with R2 of 92%; comparable increase in 1% PDI resulted in the reduction of avoidable yield loss with 1.31% with R2 as 90%. These results suggested timely protection of crop to minimize yield losses and achieve potential yields.
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Claims 14
Claim · model-written summary
Maximum and minimum temperatures, evening relative humidity, and rainy days were critical factors for Corynespora leaf spot progression in cotton.
- Outcome
- critical factorse0
Not reportedTaxonSettingDirection
Verbatim
e0“maximum and minimum temperatures, evening relative humidity and number of rainy days were critical factors”
Claim · model-written summary
Five propiconazole sprays gave the lowest cotton disease index, 7.4 PDI.
- Taxon
- Cotton
Gossypium hirsutumt0 - Treatment
- five sprayse0
- Outcome
- per cent disease indexe0
- Direction
- loweste0
- Value
- 7.4 PDIe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“lowest per cent disease index (7.4 PDI) and the highest yield (3060 kg ha-1) with five sprays”
t0“Cotton”
Claim · model-written summary
Five propiconazole sprays gave the highest cotton yield, 3060 kg ha-1.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- five sprayse0
- Outcome
- yielde0
- Direction
- higheste0
- Value
- 3060 kg ha-1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“highest yield (3060 kg ha-1) with five sprays”
t0“Cotton”
Claim · model-written summary
Disease control in cotton correlated positively with spray number.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- number of sprayse0
- Outcome
- Per cent disease controle0
- Direction
- positive correlatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Per cent disease control and yield showed positive correlation whereas PDI showed negative correlation with number of sprays”
t0“Cotton”
Claim · model-written summary
Cotton yield correlated positively with spray number.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- number of sprayse0
- Outcome
- yielde0
- Direction
- positive correlatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Per cent disease control and yield showed positive correlation whereas PDI showed negative correlation with number of sprays”
t0“Cotton”
Claim · model-written summary
Cotton disease index correlated negatively with spray number.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- number of sprayse0
- Outcome
- PDIe0
- Direction
- negative correlatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PDI showed negative correlation with number of sprays”
t0“Cotton”
Claim · model-written summary
Cotton yield correlated negatively with disease index.
- Taxon
- CottonGossypium hirsutumt0
- Outcome
- Yielde0
- Direction
- negative correlatione0
- Comparator
- PDIe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield and avoidable yield loss showed negative correlation with PDI”
t0“Cotton”
Claim · model-written summary
Avoidable cotton yield loss correlated negatively with disease index.
- Taxon
- CottonGossypium hirsutumt0
- Outcome
- avoidable yield losse0
- Direction
- negative correlatione0
- Comparator
- PDIe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield and avoidable yield loss showed negative correlation with PDI”
t0“Cotton”
Claim · model-written summary
Each additional spray was associated with a 4.89 reduction in cotton disease index, with R2 of 98%.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- every additional spraye0
- Outcome
- PDIe0
- Direction
- reductione0
- Value
- 4.89e0
- Qualifier
- R2) of 98%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“every additional spray resulted in reduction of PDI by 4.89 with goodness of fit (R2) of 98%”
t0“Cotton”
Claim · model-written summary
Each additional spray was associated with a 13.50% increase in cotton disease control, with R2 of 99%.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- every additional spraye1
- Outcome
- PDCe0
- Direction
- increasee0
- Value
- 13.50%e0
- Qualifier
- R2 of 99%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increase of PDC by 13.50% with R2 of 99%”
e1“every additional spray resulted in reduction of PDI”
t0“Cotton”
Claim · model-written summary
Each additional spray was associated with cotton yield promotion to 178.80% in pooled analysis, with R2 of 97%.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- every additional spraye1
- Outcome
- yielde0
- Direction
- promotione0
- Value
- 178.80%e0
- Qualifier
- R2 97%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“promotion of yield to 178.80% in pooled analysis data with R2 97%”
e1“every additional spray resulted in reduction of PDI”
t0“Cotton”
Claim · model-written summary
A 1% increase in cotton disease index was associated with yield reduction to 35.41 times, with R2 of 92%.
- Taxon
- CottonGossypium hirsutumt0
- Outcome
- yielde0
- Direction
- reductione0
- Value
- 35.41 timese0
- Qualifier
- R2 of 92%e0
- Comparator
- PDIe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increase in 1% PDI resulted in the reduction of yield to 35.41 times with R2 of 92%”
t0“Cotton”
Claim · model-written summary
A 1% increase in cotton disease index was associated with a 1.31% reduction in avoidable yield loss, with R2 of 90%.
- Taxon
- CottonGossypium hirsutumt0
- Outcome
- avoidable yield losse0
- Direction
- reductione0
- Value
- 1.31%e0
- Qualifier
- R2 as 90%e0
- Comparator
- PDIe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increase in 1% PDI resulted in the reduction of avoidable yield loss with 1.31% with R2 as 90%”
t0“Cotton”
Claim · model-written summary
The authors recommend timely crop protection to minimize cotton yield losses and achieve potential yields.
- Taxon
- CottonGossypium hirsutumt0
- Outcome
- timely protection of crope0
- Qualifier
- minimize yield losses and achieve potential yieldse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“timely protection of crop to minimize yield losses and achieve potential yields”
t0“Cotton”
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