Abstract
The hemibiotrophic fungus-like oomycete phytopathogen, Phytophthora infestans (Mont.) de Bary, causing late blight disease of potato, is one of the most serious foliar diseases of potato. The pathogen spread very rapidly and can infect at any stage of crop growth.The field experiments were carried out during winter (rabi) season of 2020-21 and winter (rabi) season of 2021-22 to find out the correlation between the disease progress and environmental factors and the effective novel fungicides registered under Central Insecticide Board and Registration Committee (CIB&RC) against P. infestans. Results revealed that T7: Mandipropamid 23.4% SC @ 0.1% (1.0 ml/L) at 35 & 55 days after sowing (DAS) and Ametoctradin 27% + Dimethomorph 20.27% SC @ 0.1% (1.0 ml/L) at 45 & 65 DAS recorded least average per cent late blight disease incidence (PLBDI) of 13.00 and 9.33, per cent late blight disease severity/index (PLBDS) of 8.81 and 5.96 and maximum tuber yield of 21.58 and 21.86 t/ha with highest benefit cost ratio (BCR) value of 1:1.95 and 1: 1.99 as compared to control during winter (rabi) season of 2020-21 and winter (rabi) season of 2021-22, respectively. T7 exhibited minimum Area under the Disease Progress Curve (AUDPC) value during both the consecutive seasons. The disease is positively correlated with maximum and minimum temperature, morning and evening relative humidity and sunshine hours. Linearity assumption scatter matrix indicates coefficient of determination of 0.916 was calculated using the pooled data.The relative potato tuber yield loss ranged from 7.38 to 19.96% and 7.14 to 19.62% during 2020-21 and 2021-22, respectively. Spray schedule with contact fungicide followed by systemic/translaminar + contact fungicide recorded reduced potato late blight disease with highest BCR value under natural epiphytotic condition.
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Claims 13
Claim · model-written summary
T7 gave the least late blight incidence in 2020-21 and 2021-22, 13.00 and 9.33.
- Taxon
- potato
Solanum tuberosume2 - Treatment
- T7: Mandipropamid 23.4% SC @ 0.1% (1.0 ml/L) at 35 & 55 days after sowing (DAS) and Ametoctradin 27% + Dimethomorph 20.27% SC @ 0.1% (1.0 ml/L) at 45 & 65 DASe0
- Interactor
- Phytophthora infestans
Phytophthora infestanst0pathogen - Outcome
- late blight disease incidencee0
- Direction
- leaste0
- Value
- 13.00 and 9.33e0
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“T7: Mandipropamid 23.4% SC @ 0.1% (1.0 ml/L) at 35 & 55 days after sowing (DAS) and Ametoctradin 27% + Dimethomorph 20.27% SC @ 0.1% (1.0 ml/L) at 45 & 65 DAS recorded least average per cent late blight disease incidence (PLBDI) of 13.00 and 9.33”
e1“compared to control”
e2“late blight disease of potato”
t0“Phytophthora infestans”
Claim · model-written summary
T7 gave the least late blight severity, 8.81 and 5.96.
- Taxon
- potatoSolanum tuberosume3
- Treatment
- T7e4
- Interactor
- Phytophthora infestansPhytophthora infestanst0pathogen
- Outcome
- per cent late blight disease severity/indexe0
- Direction
- leaste1
- Value
- 8.81 and 5.96e0
- Comparator
- controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“per cent late blight disease severity/index (PLBDS) of 8.81 and 5.96”
e1“recorded least average per cent late blight disease incidence”
e2“compared to control”
e3“late blight disease of potato”
e4“T7: Mandipropamid”
t0“Phytophthora infestans”
Claim · model-written summary
T7 produced maximum tuber yields of 21.58 and 21.86 t/ha.
- Taxon
- potatoSolanum tuberosume3
- Treatment
- T7e1
- Outcome
- tuber yielde0
- Direction
- maximume0
- Value
- 21.58 and 21.86 t/hae0
- Comparator
- controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maximum tuber yield of 21.58 and 21.86 t/ha”
e1“T7: Mandipropamid”
e2“compared to control”
e3“late blight disease of potato”
Claim · model-written summary
T7 gave the highest benefit cost ratios, 1:1.95 and 1: 1.99.
- Taxon
- potatoSolanum tuberosume3
- Treatment
- T7e1
- Outcome
- benefit cost ratioe0
- Direction
- higheste0
- Value
- 1:1.95 and 1: 1.99e0
- Comparator
- controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“highest benefit cost ratio (BCR) value of 1:1.95 and 1: 1.99”
e1“T7: Mandipropamid”
e2“compared to control”
e3“late blight disease of potato”
Claim · model-written summary
T7 had the minimum AUDPC in both seasons.
- Taxon
- potatoSolanum tuberosume1
- Treatment
- T7e0
- Interactor
- Phytophthora infestansPhytophthora infestanst0pathogen
- Outcome
- Area under the Disease Progress Curve (AUDPC)e0
- Direction
- minimume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“T7 exhibited minimum Area under the Disease Progress Curve (AUDPC) value during both the consecutive seasons.”
e1“late blight disease of potato”
t0“Phytophthora infestans”
Claim · model-written summary
Late blight correlated positively with maximum and minimum temperature.
- Taxon
- potatoSolanum tuberosume1
- Interactor
- Phytophthora infestansPhytophthora infestanst0pathogen
- Outcome
- diseasee0
- Direction
- positively correlatede0
- Setting
- maximum and minimum temperaturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The disease is positively correlated with maximum and minimum temperature, morning and evening relative humidity and sunshine hours.”
e1“late blight disease of potato”
t0“Phytophthora infestans”
Claim · model-written summary
Late blight correlated positively with morning and evening relative humidity.
- Taxon
- potatoSolanum tuberosume1
- Interactor
- Phytophthora infestansPhytophthora infestanst0pathogen
- Outcome
- diseasee0
- Direction
- positively correlatede0
- Setting
- morning and evening relative humiditye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The disease is positively correlated with maximum and minimum temperature, morning and evening relative humidity and sunshine hours.”
e1“late blight disease of potato”
t0“Phytophthora infestans”
Claim · model-written summary
Late blight correlated positively with sunshine hours.
- Taxon
- potatoSolanum tuberosume1
- Interactor
- Phytophthora infestansPhytophthora infestanst0pathogen
- Outcome
- diseasee0
- Direction
- positively correlatede0
- Setting
- sunshine hourse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The disease is positively correlated with maximum and minimum temperature, morning and evening relative humidity and sunshine hours.”
e1“late blight disease of potato”
t0“Phytophthora infestans”
Claim · model-written summary
The pooled scatter matrix reported a determination coefficient of 0.916.
- Taxon
- potatoSolanum tuberosume1
- Outcome
- coefficient of determinatione0
- Value
- 0.916e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“coefficient of determination of 0.916 was calculated using the pooled data”
e1“late blight disease of potato”
Claim · model-written summary
Relative tuber yield loss ranged from 7.38 to 19.96% in 2020-21.
- Taxon
- potatoSolanum tuberosume0
- Outcome
- tuber yield losse0
- Value
- 7.38 to 19.96%e0
- Qualifier
- 2020-21e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“relative potato tuber yield loss ranged from 7.38 to 19.96% and 7.14 to 19.62% during 2020-21 and 2021-22, respectively”
Claim · model-written summary
Relative tuber yield loss ranged from 7.14 to 19.62% in 2021-22.
- Taxon
- potatoSolanum tuberosume0
- Outcome
- tuber yield losse0
- Value
- 7.14 to 19.62%e0
- Qualifier
- 2021-22e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“relative potato tuber yield loss ranged from 7.38 to 19.96% and 7.14 to 19.62% during 2020-21 and 2021-22, respectively”
Claim · model-written summary
The contact then systemic/translaminar plus contact schedule reduced late blight.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- Spray schedule with contact fungicide followed by systemic/translaminar + contact fungicidee0
- Outcome
- potato late blight diseasee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spray schedule with contact fungicide followed by systemic/translaminar + contact fungicide recorded reduced potato late blight disease with highest BCR value under natural epiphytotic condition.”
Claim · model-written summary
The contact then systemic/translaminar plus contact schedule yielded the highest BCR.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- Spray schedule with contact fungicide followed by systemic/translaminar + contact fungicidee0
- Outcome
- BCR valuee0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spray schedule with contact fungicide followed by systemic/translaminar + contact fungicide recorded reduced potato late blight disease with highest BCR value under natural epiphytotic condition.”
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