Abstract
In some areas of Iran, root rot of irrigated lentils (Lens culinaris) was a serious problem resulting in high plant mortality and decreased yields. Pythium ultimum was the predominant soil-borne pathogen isolated from discolored, necrotic roots of diseased plants in furrow-irrigated fields at Karaj, and appeared to be the primary incitant of root rot of irrigated lentils at several other locations in the country. Pythium aphanidermatum was the primary pathogen isolated from roots of diseased lentils at two irrigated sites in southern Iran. Isolates of P. ultimum and P. aphanidermatum were highly pathogenic on roots of lentil in greenhouse inoculation studies. Other fungi isolated from diseased lentil roots less frequently were Rhizoctonia solani, Phytophthora sp., Macrophomina phaseolina, Fusarium oxysporum, F. roseum, and F. solani. Cultures of R. solani, Phytophthora sp., and M. phaseolina were less pathogenic on lentil roots than either Pythium sp., whereas the three Fusarium spp. were nonpathogens. Incidence and severity of root rot increased in Karaj field trials in treatments receiving N and P fertilizer and irrigation every 6 days. In greenhouse tests, incidence of root rot increased when naturally infested Karaj soils were amended with 1 or 10% cow manure before planting. Sources of resistance to the lentil root rot complex were found in germplasm screened in naturally infested soils at Karaj.
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Claims 12
Claim · model-written summary
Lentil root rot caused high mortality and reduced yields in some Iranian areas.
- Taxon
- lentils
Lens culinarise0 - Interactor
- root rote0pathogen
- Outcome
- high plant mortality and decreased yieldse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“root rot of irrigated lentils (Lens culinaris) was a serious problem resulting in high plant mortality and decreased yields.”
Claim · model-written summary
Pythium ultimum predominated in diseased lentil roots at Karaj and appeared the main root rot cause elsewhere.
- Taxon
- lentilsLens culinarise0t0
- Interactor
- Pythium ultimumGlobisporangium ultimume0t0pathogen
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pythium ultimum was the predominant soil-borne pathogen isolated from discolored, necrotic roots of diseased plants in furrow-irrigated fields at Karaj, and appeared to be the primary incitant of root rot of irrigated lentils at several other locations in the country.”
t0“lentils”
Claim · model-written summary
Pythium aphanidermatum was the main pathogen isolated at two irrigated southern Iran sites.
- Taxon
- lentilsLens culinarise0
- Interactor
- Pythium aphanidermatumPythium aphanidermatume0pathogen
- Outcome
- primary pathogen isolatede0
- Setting
- southern Irane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pythium aphanidermatum was the primary pathogen isolated from roots of diseased lentils at two irrigated sites in southern Iran.”
Claim · model-written summary
P. ultimum isolates were highly pathogenic on lentil roots in greenhouse inoculations.
- Taxon
- lentilLens culinarise0
- Treatment
- P. ultimume0
- Interactor
- P. ultimumGlobisporangium ultimume0pathogen
- Outcome
- highly pathogenic on rootse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Isolates of P. ultimum and P. aphanidermatum were highly pathogenic on roots of lentil in greenhouse inoculation studies.”
Claim · model-written summary
P. aphanidermatum isolates were highly pathogenic on lentil roots in greenhouse inoculations.
- Taxon
- lentilLens culinarise0
- Treatment
- P. aphanidermatume0
- Interactor
- P. aphanidermatumPythium aphanidermatume0pathogen
- Outcome
- highly pathogenic on rootse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Isolates of P. ultimum and P. aphanidermatum were highly pathogenic on roots of lentil in greenhouse inoculation studies.”
Claim · model-written summary
Rhizoctonia solani, Phytophthora sp. and Macrophomina phaseolina were isolated less frequently from diseased lentil roots.
- Taxon
- lentilLens culinarise0
- Interactor
- Rhizoctonia solani
Rhizoctonia solanie0pathogen - Outcome
- isolated from diseased lentil roots less frequentlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Other fungi isolated from diseased lentil roots less frequently were Rhizoctonia solani, Phytophthora sp., Macrophomina phaseolina, Fusarium oxysporum, F. roseum, and F. solani.”
Claim · model-written summary
R. solani, Phytophthora sp. and M. phaseolina were less pathogenic than Pythium species.
- Taxon
- lentilLens culinarise0
- Interactor
- R. solaniRhizoctonia solanie0pathogen
- Outcome
- pathogenic on lentil rootse0
- Direction
- lesse0
- Comparator
- Pythium sp.e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cultures of R. solani, Phytophthora sp., and M. phaseolina were less pathogenic on lentil roots than either Pythium sp.”
Claim · model-written summary
The three Fusarium species were nonpathogens on lentil roots.
- Taxon
- lentilLens culinarise0t0
FusariumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the three Fusarium spp. were nonpathogens.”
t0“lentils”
Claim · model-written summary
Nitrogen and phosphorus fertilizer increased field root rot incidence and severity.
- Taxon
- lentilsLens culinarise0t0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Incidence and severity of root rot increased in Karaj field trials in treatments receiving N and P fertilizer and irrigation every 6 days.”
t0“lentils”
Claim · model-written summary
Irrigation every 6 days increased root rot incidence and severity.
- Taxon
- lentilsLens culinarise0t0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Incidence and severity of root rot increased in Karaj field trials in treatments receiving N and P fertilizer and irrigation every 6 days.”
t0“lentils”
Claim · model-written summary
One percent cow manure amendment increased greenhouse root rot incidence.
- Taxon
- lentilsLens culinarise0t0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“incidence of root rot increased when naturally infested Karaj soils were amended with 1 or 10% cow manure before planting.”
t0“lentils”
Claim · model-written summary
Resistance sources were found in lentil germplasm screened in infested soil.
- Taxon
- lentilLens culinarise0
- Outcome
- Sources of resistance to the lentil root rot complexe0
- Setting
- Karaje0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sources of resistance to the lentil root rot complex were found in germplasm screened in naturally infested soils at Karaj.”
The same questions in other papers
phosphorus · disease · Lens culinaris (lentil)Positive and negative results
2 in the opposite direction
- positive
- positive
fertilization · disease · Lens culinaris (lentil)Positive and negative results
7 in the opposite direction
- positive
- positive
- positive
4 papers more in this group
See all 8 papers →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.