Abstract
Rezgui, S., Fakhfakh, M. M., Boukef, S., Rhaiem, A., Cherif, Mo., Cherif, Ma., and Yahyaoui, A. H. 2008. Effect of common cultural practices on Septoria leaf blotch disease and grain yield of irrigated durum wheat. Tunisian Journal of Plant Protection 3: 59-67. Using alternative cultural practices could be an attractive option to reduce fungicide without impairing Septoria leaf blotch disease (caused by Mycosphaerella graminicola, anamorph: Septoria tritici) control in irrigated durum wheat fields. Association between common cultural practices and disease related traits were assessed from data collected on a sample of 48 durum wheat fields. Results suggested that relying exclusively on one component rather than integrating a combination of practices is not cost effective to alleviate Septoria leaf blotch disease impact on grain yield. Disease severity increase was attributed to the extensive use of a susceptible cultivar “Karim”, early sowing, higher seeding rate, on farm produced seeds, greater nitrogen rates, and an ineffective fungicide application explaining 81.7% of the total variability of the surveyed durum wheat fields. Fungicide application reduced Septoria leaf blotch disease infection and its spread in treated fields but did not prevent infection. Fungicide application effect was lower for both low (less than 10%) and high (greater than 60%) severity, but it was effective when severity ranged from 40% and 50%. Lower critical Septoria leaf blotch disease threshold ranging between 10 to 20 % appeared to be adequate in reducing Septoria leaf blotch disease impact on grain yield. The study shows that lack of disease damage assessment is the most important component of farmers’ decision-making process with regard to the treatment dates and number of fungicide applications. Implementing a suitable integrated Septoria leaf blotch disease management program in irrigated durum wheat areas should be sought by varying cultural practices options.
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Claims 11
Claim · model-written summary
Relying on a single cultural practice rather than a combination is not cost effective for reducing Septoria leaf blotch impact on durum wheat grain yield.
- Taxon
- durum wheat
Triticum turgidum subsp. durumt0 - Treatment
- relying exclusively on one componente1
- Interactor
- Mycosphaerella graminicola
Zymoseptoria triticie0pathogen - Outcome
- cost effective to alleviate Septoria leaf blotch disease impact on grain yielde1
- Direction
- not cost effectivee1
- Comparator
- integrating a combination of practicese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Irrigated Durum Wheat”
e0“caused by Mycosphaerella graminicola, anamorph: Septoria tritici”
e1“relying exclusively on one component rather than integrating a combination of practices is not cost effective to alleviate Septoria leaf blotch disease impact on grain yield”
Claim · model-written summary
Extensive use of the susceptible cultivar Karim, early sowing and higher seeding rate were attributed to increased Septoria leaf blotch severity in durum wheat fields.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Treatment
- extensive use of a susceptible cultivar “Karim”, early sowing, higher seeding ratee0
- Outcome
- Disease severitye0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Irrigated Durum Wheat”
e0“Disease severity increase was attributed to the extensive use of a susceptible cultivar “Karim”, early sowing, higher seeding rate, on farm produced seeds, greater nitrogen rates, and an ineffective fungicide application”
Claim · model-written summary
On-farm produced seed, greater nitrogen rates and an ineffective fungicide application were attributed to increased Septoria leaf blotch severity in durum wheat fields.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Treatment
- on farm produced seeds, greater nitrogen rates, and an ineffective fungicide applicatione0
- Outcome
- Disease severitye0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Irrigated Durum Wheat”
e0“Disease severity increase was attributed to the extensive use of a susceptible cultivar “Karim”, early sowing, higher seeding rate, on farm produced seeds, greater nitrogen rates, and an ineffective fungicide application”
Claim · model-written summary
The surveyed factors explained 81.7% of the total variability of durum wheat fields.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Outcome
- total variabilitye0
- Value
- 81.7%e0
- Setting
- surveyed durum wheat fieldse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Irrigated Durum Wheat”
e0“explaining 81.7% of the total variability of the surveyed durum wheat fields”
Claim · model-written summary
Fungicide application reduced Septoria leaf blotch infection and its spread in treated durum wheat fields.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Treatment
- Fungicide applicatione0
- Interactor
- Mycosphaerella graminicolaZymoseptoria triticie1pathogen
- Outcome
- Septoria leaf blotch disease infection and its spreade0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Irrigated Durum Wheat”
e0“Fungicide application reduced Septoria leaf blotch disease infection and its spread in treated fields”
e1“caused by Mycosphaerella graminicola, anamorph: Septoria tritici”
Claim · model-written summary
Fungicide application did not prevent Septoria leaf blotch infection in durum wheat.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Treatment
- Fungicide applicatione0
- Interactor
- Mycosphaerella graminicolaZymoseptoria triticie1pathogen
- Outcome
- infectione0
- Direction
- did not prevente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Irrigated Durum Wheat”
e0“Fungicide application reduced Septoria leaf blotch disease infection and its spread in treated fields but did not prevent infection”
e1“caused by Mycosphaerella graminicola, anamorph: Septoria tritici”
Claim · model-written summary
Fungicide effect on Septoria leaf blotch was lower at low (less than 10%) and high (greater than 60%) severity than at 40% to 50% severity.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Treatment
- Fungicide applicatione0
- Outcome
- Fungicide application effecte0
- Direction
- lowere0
- Qualifier
- low (less than 10%) and high (greater than 60%) severitye0
- Comparator
- when severity ranged from 40% and 50%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Irrigated Durum Wheat”
e0“Fungicide application effect was lower for both low (less than 10%) and high (greater than 60%) severity, but it was effective when severity ranged from 40% and 50%”
Claim · model-written summary
Fungicide application was effective against Septoria leaf blotch when severity ranged from 40% to 50%.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Treatment
- Fungicide applicatione0
- Outcome
- effectivee0
- Qualifier
- when severity ranged from 40% and 50%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Irrigated Durum Wheat”
e0“Fungicide application effect was lower for both low (less than 10%) and high (greater than 60%) severity, but it was effective when severity ranged from 40% and 50%”
Claim · model-written summary
A lower critical Septoria leaf blotch threshold of 10 to 20% appears adequate for reducing disease impact on durum wheat grain yield.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Outcome
- Lower critical Septoria leaf blotch disease thresholde0
- Value
- between 10 to 20 %e0
- Qualifier
- adequate in reducing Septoria leaf blotch disease impact on grain yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Irrigated Durum Wheat”
e0“Lower critical Septoria leaf blotch disease threshold ranging between 10 to 20 % appeared to be adequate in reducing Septoria leaf blotch disease impact on grain yield”
Claim · model-written summary
Lack of disease damage assessment is the most important component of farmers’ decision-making on fungicide timing and number of applications in durum wheat.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Treatment
- lack of disease damage assessmente0
- Outcome
- farmers’ decision-making processe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Irrigated Durum Wheat”
e0“lack of disease damage assessment is the most important component of farmers’ decision-making process with regard to the treatment dates and number of fungicide applications”
Claim · model-written summary
An integrated Septoria leaf blotch management program should be implemented in irrigated durum wheat areas by varying cultural practices.
- Taxon
- durum wheatTriticum turgidum subsp. durume0
- Outcome
- integrated Septoria leaf blotch disease management programe0
- Qualifier
- by varying cultural practices optionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Implementing a suitable integrated Septoria leaf blotch disease management program in irrigated durum wheat areas should be sought by varying cultural practices options”
The same questions in other papers
fungicide · Zymoseptoria tritici · Triticum turgidum (rivet wheat)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- negative
- 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.