Abstract
Field trials were conducted under natural infection and artificial inoculation from 2012 to 2014 at seven sites across the Canadian prairies to determine genetic and management effects on Fusarium head blight (FHB) in wheat production systems. A system of management, which consisted of (1) a control of no fungicide was compared with (2) the seed treatment (ST) thiamethoxam + difenoconazole + metalaxyl-M + S-isomer, (3) an in-crop foliar fungicide (tebuconazole + prothioconazole), or (4) ST + foliar fungicide, was integrated with four wheat cultivars of contrasting growth habits and levels of FHB resistance. Results indicated the cultivars expressing improved FHB resistance, Carberry (spring wheat) and Emerson (winter wheat), were superior over susceptible cultivars, Harvest (spring wheat) and CDC Falcon (winter wheat), in reducing Fusarium-damaged kernel (FDK) and deoxynivalenol (DON) levels, and displayed higher yield under high Fusarium pressure. Winter wheat displayed higher overall yield, with Emerson producing the highest and most stable yields across environments. Application of foliar fungicide, with or without the ST, increased grain yield, seed mass, and test weight; and lowered FDK and DON. Seed treatment alone increased test weight, spring plant density of both winter wheat varieties, and kernel weight in Emerson. A management strategy of foliar fungicide and (or) ST + foliar fungicide generally produced higher yields with greater stability, particularly for susceptible cultivars in high FHB environments. The results of this study reinforce that integration of FHB-resistant cultivars with appropriate cultural practices is required to reduce the risk of FHB and optimize grain yield, and is further enhanced with a winter vs. spring growth habit.
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Claims 13
Claim · model-written summary
Resistant Carberry and Emerson had less damaged kernels than susceptible cultivars.
- Taxon
- wheat
Triticum aestivume0 - Material
- Carberrye0
- Outcome
- Fusarium-damaged kernel (FDK)e0
- Direction
- reducinge0
- Comparator
- susceptible cultivarse0
FusariumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Carberry (spring wheat) and Emerson (winter wheat), were superior over susceptible cultivars, Harvest (spring wheat) and CDC Falcon (winter wheat), in reducing Fusarium-damaged kernel (FDK)”
Claim · model-written summary
Resistant cultivars reduced deoxynivalenol relative to susceptible cultivars.
- Taxon
- wheatTriticum aestivume0
- Material
- Emersone0
- Outcome
- deoxynivalenol (DON) levelse0
- Direction
- reducinge0
- Comparator
- susceptible cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Carberry (spring wheat) and Emerson (winter wheat), were superior over susceptible cultivars, Harvest (spring wheat) and CDC Falcon (winter wheat), in reducing Fusarium-damaged kernel (FDK) and deoxynivalenol (DON) levels”
Claim · model-written summary
Resistant cultivars yielded more under high Fusarium pressure.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- yielde0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“displayed higher yield under high Fusarium pressure”
t0“Fusarium head blight (FHB) in wheat production systems”
Claim · model-written summary
Winter wheat had higher overall yield.
- Taxon
- wheatTriticum aestivume0
- Material
- Winter wheate0
- Outcome
- yielde0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Winter wheat displayed higher overall yield”
Claim · model-written summary
Emerson had the highest and most stable yields across environments.
- Taxon
- wheatTriticum aestivumt0
- Material
- Emersone0
- Outcome
- yieldse0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Emerson producing the highest and most stable yields across environments”
t0“Fusarium head blight (FHB) in wheat production systems”
Claim · model-written summary
Foliar fungicide increased grain yield.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- foliar fungicidee0
- Outcome
- grain yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of foliar fungicide, with or without the ST, increased grain yield”
t0“Fusarium head blight (FHB) in wheat production systems”
Claim · model-written summary
Foliar fungicide increased seed mass and test weight.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- foliar fungicidee0
- Outcome
- seed mass, and test weighte0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of foliar fungicide, with or without the ST, increased grain yield, seed mass, and test weight”
t0“Fusarium head blight (FHB) in wheat production systems”
Claim · model-written summary
Foliar fungicide lowered damaged kernels and deoxynivalenol.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- FDK and DONe0
- Direction
- lowerede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“and lowered FDK and DON”
t0“Fusarium head blight (FHB) in wheat production systems”
Claim · model-written summary
Seed treatment alone increased test weight.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Seed treatmente0
- Outcome
- test weighte0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed treatment alone increased test weight”
t0“Fusarium head blight (FHB) in wheat production systems”
Claim · model-written summary
Seed treatment increased spring plant density of both winter varieties.
- Taxon
- wheatTriticum aestivume0
- Treatment
- Seed treatmente0
- Outcome
- spring plant densitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed treatment alone increased test weight, spring plant density of both winter wheat varieties”
Claim · model-written summary
Seed treatment increased kernel weight in Emerson.
- Taxon
- wheatTriticum aestivume0
- Material
- Emersone0
- Treatment
- Seed treatmente0
- Outcome
- kernel weighte0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed treatment alone increased test weight, spring plant density of both winter wheat varieties, and kernel weight in Emerson”
Claim · model-written summary
Foliar fungicide with or without seed treatment improved yield and stability, especially in susceptible cultivars.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- foliar fungicidee0
- Outcome
- yields with greater stabilitye0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliar fungicide and (or) ST + foliar fungicide generally produced higher yields with greater stability, particularly for susceptible cultivars in high FHB environments”
t0“Fusarium head blight (FHB) in wheat production systems”
Claim · model-written summary
The authors recommend resistant cultivars integrated with cultural practices to lower FHB risk and optimize yield.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- integration of FHB-resistant cultivars with appropriate cultural practicese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“integration of FHB-resistant cultivars with appropriate cultural practices is required to reduce the risk of FHB and optimize grain yield”
t0“Fusarium head blight (FHB) in wheat production systems”
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