Abstract
In the Canadian prairies, pulse crops such as field pea ( Pisum sativum L.) and lentil ( Lens culinaris L.) are economically important and widely grown. However, in recent years, root rot, caused by a variety of fungal and oomycete pathogens, including Aphanomyces euteiches , has become a limiting factor on yield. In this study, we examined the impacts of nitrogen (N) fertilization and a commercial arbuscular mycorrhizal fungal (AMF) inoculant on pea and lentil plant health and agronomic production at three locations in Saskatchewan: Swift Current, Indian Head and Melfort. The AMF inoculation had no impact on root rot severity, and therefore is not considered a reliable method to manage root rot in pea and lentil. In contrast, N fertilization led to reductions in root rot in Swift Current, but not the other two sites. However, N fertilization did reduce nodulation. When both pea and lentil are considered, the abundance of A. euteiches in soil increased from pre-seeding to mid-bloom. A negative correlation between soil pH and disease severity was also observed. The high between-site variability highlights the importance of testing root rot mitigation strategies under multiple soil conditions to develop site-specific recommendations. Use of N fertilizer as a root rot management strategy merits further exploration, including investigation into its interactions with other management strategies, soil properties, and costs and benefits.
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Claims 8
Claim · model-written summary
AMF inoculation had no impact on root rot severity.
- Taxon
- pea and lentil
Lens culinaris
Lathyrus oleraceust0 - Treatment
- AMF inoculatione0
- Interactor
- AMFe0symbiont
- Outcome
- root rot severitye0
- Direction
- no impacte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The AMF inoculation had no impact on root rot severity”
t0“pea and lentil”
Claim · model-written summary
Nitrogen fertilization reduced root rot at Swift Current.
- Taxon
- pea and lentilLens culinarisLathyrus oleraceust0
- Treatment
- N fertilizatione0
- Outcome
- root rote0
- Direction
- reductionse0
- Setting
- Swift Currente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N fertilization led to reductions in root rot in Swift Current”
t0“pea and lentil”
Claim · model-written summary
Nitrogen fertilization did not reduce root rot at the other two sites.
- Taxon
- pea and lentilLens culinarisLathyrus oleraceust0
- Treatment
- N fertilizatione0
- Outcome
- root rote0
- Setting
- the other two sitese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N fertilization led to reductions in root rot in Swift Current, but not the other two sites”
t0“pea and lentil”
Claim · model-written summary
Nitrogen fertilization reduced nodulation.
- Taxon
- pea and lentilLens culinarisLathyrus oleraceust0
- Treatment
- N fertilizatione0
- Outcome
- nodulatione0
- Direction
- reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N fertilization did reduce nodulation”
t0“pea and lentil”
Claim · model-written summary
Soil A. euteiches abundance increased from pre-seeding to mid-bloom.
- Taxon
- pea and lentilLens culinarisLathyrus oleraceust0
- Organ / stage
- mid-bloome0
- Interactor
- A. euteichesAphanomyces euteichese0pathogen
- Outcome
- abundance of A. euteiches in soile0
- Direction
- increasede0
- Comparator
- pre-seedinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the abundance of A. euteiches in soil increased from pre-seeding to mid-bloom”
t0“pea and lentil”
Claim · model-written summary
Soil pH correlated negatively with disease severity.
- Taxon
- pea and lentilLens culinarisLathyrus oleraceust0
- Outcome
- disease severitye0
- Direction
- negative correlatione0
- Setting
- soil pHe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A negative correlation between soil pH and disease severity was also observed”
t0“pea and lentil”
Claim · model-written summary
AMF inoculation was judged unreliable for root rot management.
- Taxon
- pea and lentilLens culinarisLathyrus oleraceuse0
- Outcome
- not considered a reliable method to manage root rote0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“therefore is not considered a reliable method to manage root rot in pea and lentil”
Claim · model-written summary
Nitrogen fertilizer for root rot management merits further exploration.
- Taxon
- pea and lentilLens culinarisLathyrus oleraceust0
- Outcome
- Use of N fertilizer as a root rot management strategy merits further exploratione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Use of N fertilizer as a root rot management strategy merits further exploration”
t0“pea and lentil”
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