Abstract
Studies were undertaken to assess the impact of seedling blight and root rot caused by Rhizoctonia solani AG-4 on nodulation and seed yield of chickpea. The effects of pathogen inoculum concentration and seed damage on disease severity were also measured. Chickpea seedlings were grown under controlled-environment conditions in sterilized soil amended with pathogenic isolates of R. solani and in field plot experiments where the inoculum was incorporated with the seed at planting. In greenhouse experiments, emergence and dry matter production declined and root rot severity increased with increasing inoculum concentration. Root rot reduced nodulation where lesions covered more than 25% of the root surface. For chickpea cultivar Sanford this level of infection was sufficient to reduce root mass, but for the cultivar Tyson, more than half of the root was covered with lesions before root mass began to decline. In a comparison of seed treatment fungicides, thiram + carbathiin (Vitaflo 280) and carbathiin + thiabendazole (Crown at 6 mL of product kg -1 seed) significantly increased seedling emergence and seed yield compared to the inoculated control. In an assessment of the effects of seed damage, seedling survival and seed yield were similar for both healthy and mechanically damaged seed. Rhizoctonia solani has the potential to be an important constraint to chickpea production in the prairie region of western Canada. Key words: Rhizoctonia solani, Cicer arietinum, seed treatment, fungicide, seeding date
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 9
Claim · model-written summary
Increasing R. solani inoculum reduced emergence and dry matter production.
- Taxon
- chickpea
Cicer arietinumt0 - Treatment
- increasing inoculum concentratione0
- Outcome
- emergence and dry matter productione0
- Direction
- declinede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“emergence and dry matter production declined and root rot severity increased with increasing inoculum concentration”
t0“chickpea”
Claim · model-written summary
Increasing R. solani inoculum raised root rot severity.
- Taxon
- chickpeaCicer arietinumt0
- Treatment
- increasing inoculum concentratione0
- Outcome
- root rot severitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“emergence and dry matter production declined and root rot severity increased with increasing inoculum concentration”
t0“chickpea”
Claim · model-written summary
Root rot reduced nodulation when lesions covered over 25% of root surface.
- Taxon
- chickpeaCicer arietinumt0
- Interactor
- Root rote0pathogen
- Outcome
- nodulatione0
- Direction
- reducede0
- Qualifier
- more than 25% of the root surfacee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root rot reduced nodulation where lesions covered more than 25% of the root surface”
t0“chickpea”
Claim · model-written summary
Sanford root mass declined above 25% root lesion coverage.
- Taxon
- chickpeaCicer arietinume0
- Material
- Sanforde0
- Outcome
- root masse0
- Direction
- reducee0
- Qualifier
- this level of infectione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For chickpea cultivar Sanford this level of infection was sufficient to reduce root mass”
t0“chickpea”
Claim · model-written summary
Tyson root mass declined only once lesions covered more than half the root.
- Taxon
- chickpeaCicer arietinumt0
- Material
- Tysone0
- Outcome
- root masse0
- Direction
- declinee0
- Qualifier
- more than half of the roote0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for the cultivar Tyson, more than half of the root was covered with lesions before root mass began to decline”
t0“chickpea”
Claim · model-written summary
Thiram plus carbathiin increased emergence and seed yield relative to inoculated control.
- Taxon
- chickpeaCicer arietinumt0
- Treatment
- thiram + carbathiin (Vitaflo 280)e0
- Interactor
- rhizoctonia
.jpg?width=60)
Rhizoctoniat1pathogent0 - Outcome
- seedling emergence and seed yielde0
- Direction
- increasede0
- Comparator
- inoculated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“thiram + carbathiin (Vitaflo 280) and carbathiin + thiabendazole (Crown at 6 mL of product kg -1 seed) significantly increased seedling emergence and seed yield compared to the inoculated control”
t0“chickpea”
t1“rhizoctonia seedling blight and root rot of chickpea”
Claim · model-written summary
Carbathiin plus thiabendazole increased emergence and seed yield relative to inoculated control.
- Taxon
- chickpeaCicer arietinumt0
- Treatment
- carbathiin + thiabendazole (Crown at 6 mL of product kg -1 seed)e0
- Interactor
- rhizoctoniaRhizoctoniat0pathogen
- Outcome
- seedling emergence and seed yielde0
- Direction
- increasede0
- Comparator
- inoculated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“thiram + carbathiin (Vitaflo 280) and carbathiin + thiabendazole (Crown at 6 mL of product kg -1 seed) significantly increased seedling emergence and seed yield compared to the inoculated control”
t0“rhizoctonia seedling blight and root rot of chickpea”
Claim · model-written summary
Mechanical seed damage left seedling survival and seed yield similar to healthy seed.
- Taxon
- chickpeaCicer arietinumt0
- Treatment
- mechanically damaged seede0
- Outcome
- seedling survival and seed yielde0
- Direction
- similare0
- Comparator
- healthye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seedling survival and seed yield were similar for both healthy and mechanically damaged seed”
t0“chickpea”
Claim · model-written summary
The authors identify R. solani as a potential constraint to chickpea production in western Canada.
- Taxon
- chickpeaCicer arietinume0
- Interactor
- Rhizoctonia solani
Rhizoctonia solanie0pathogen - Outcome
- important constraint to chickpea productione0
- Setting
- prairie region of western Canadae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rhizoctonia solani has the potential to be an important constraint to chickpea production in the prairie region of western Canada”
The same questions in other papers
inoculation · disease · Cicer arietinum (chickpea)Positive and negative results
12 papers in the same direction as this paper · 15 in the opposite direction
- positive
- positive
- positive
24 papers more in this group
See all 28 papers →inoculation · yield · Cicer arietinum (chickpea)Positive and negative results
16 papers in the same direction as this paper · 200 in the opposite direction
- positive
- positive
- positive
213 papers more in this group
See all 217 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.