Abstract
Application of Pythium oligandrum to a soil‐based compost as a mycelial suspension (5 × 10 2 CFU g −1 of dry compost) and oospore alginate pellets (10 5 oospores/g of dry compost) controlled pre‐ and postemergence damping‐off of sugar beet caused by Pythium ultimum to a level similar to metalaxyl seed treatment. Oospore seed treatments and aqueous suspensions of oospores applied to compost failed to control disease. Problems in the use of P. oligandrum oospore inocula for the control of damping‐off were highlighted. It was shown that treatment of oospores with cellulase (20 g L −1 ) increased germination approximately three‐fold in comparison to untreated spores. Untreated and cellulase pretreated oospores were subsequently evaluated as seed treatments for their ability to control damping‐off of sugar beet. The highest rate of pretreated oospores (10 4 oospores/seed) gave levels of emergence and establishment in infested compost that were not significantly different from the uninfested controls, whereas seed treatment with untreated oospores gave no significant reduction in disease. In a trial carried out in a controlled environment to assess the effect of pH (4.5–8.0), P. oligandrum (10 4 cellulase pretreated oospores/seed) was shown to control pre‐ and postemergence damping‐off of sugar beet at pH 7.0 and 7.5 only.
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 8
Claim · model-written summary
Mycelial suspension of P. oligandrum in compost controlled sugar beet damping-off to a level similar to metalaxyl seed treatment.
- Taxon
- sugar beet
Beta vulgaris subsp. vulgarise1 - Treatment
- mycelial suspensione3
- Interactor
- Pythium ultimumGlobisporangium ultimume1pathogen
- Second interactor
- Pythium oligandrum
Pythium oligandrume4biocontrol_agent - Outcome
- pre‐ and postemergence damping‐offe1
- Direction
- controllede1
- Comparator
- metalaxyl seed treatmente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“controlled pre‐ and postemergence damping‐off of sugar beet caused by Pythium ultimum to a level similar to metalaxyl seed treatment”
e3“as a mycelial suspension”
e4“Application of Pythium oligandrum”
Claim · model-written summary
Oospore alginate pellets in compost controlled sugar beet damping-off to a level similar to metalaxyl seed treatment.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise1
- Treatment
- oospore alginate pelletse2
- Interactor
- Pythium ultimumGlobisporangium ultimume1pathogen
- Second interactor
- Pythium oligandrumPythium oligandrume4biocontrol_agent
- Outcome
- pre‐ and postemergence damping‐offe1
- Direction
- controllede1
- Comparator
- metalaxyl seed treatmente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“controlled pre‐ and postemergence damping‐off of sugar beet caused by Pythium ultimum to a level similar to metalaxyl seed treatment”
e2“oospore alginate pellets”
e4“Application of Pythium oligandrum”
Claim · model-written summary
Oospore seed treatments failed to control sugar beet disease.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise1
- Treatment
- Oospore seed treatmentse5
- Outcome
- diseasee5
- Direction
- failed to controle5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“controlled pre‐ and postemergence damping‐off of sugar beet caused by Pythium ultimum to a level similar to metalaxyl seed treatment”
e5“Oospore seed treatments and aqueous suspensions of oospores applied to compost failed to control disease”
Claim · model-written summary
Aqueous suspensions of oospores applied to compost failed to control sugar beet disease.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise1
- Treatment
- aqueous suspensions of oospores applied to composte5
- Outcome
- diseasee5
- Direction
- failed to controle5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“controlled pre‐ and postemergence damping‐off of sugar beet caused by Pythium ultimum to a level similar to metalaxyl seed treatment”
e5“Oospore seed treatments and aqueous suspensions of oospores applied to compost failed to control disease”
Claim · model-written summary
Cellulase treatment increased oospore germination about three-fold relative to untreated spores.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise1
- Treatment
- cellulasee2
- Outcome
- germinatione6
- Direction
- increasede6
- Value
- approximately three‐folde6
- Comparator
- untreated sporese6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“controlled pre‐ and postemergence damping‐off of sugar beet caused by Pythium ultimum to a level similar to metalaxyl seed treatment”
e6“increased germination approximately three‐fold in comparison to untreated spores”
e2“treatment of oospores with cellulase”
Claim · model-written summary
The highest rate of cellulase-pretreated oospores gave emergence and establishment in infested compost not significantly different from uninfested controls.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise1
- Treatment
- pretreated oosporese7
- Outcome
- emergence and establishmente7
- Direction
- not significantly differente7
- Comparator
- uninfested controlse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“controlled pre‐ and postemergence damping‐off of sugar beet caused by Pythium ultimum to a level similar to metalaxyl seed treatment”
e7“The highest rate of pretreated oospores (10 4 oospores/seed) gave levels of emergence and establishment in infested compost that were not significantly different from the uninfested controls”
Claim · model-written summary
Seed treatment with untreated oospores gave no significant reduction in sugar beet disease.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise1
- Treatment
- seed treatment with untreated oosporese2
- Outcome
- diseasee2
- Direction
- no significant reductione2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“controlled pre‐ and postemergence damping‐off of sugar beet caused by Pythium ultimum to a level similar to metalaxyl seed treatment”
e2“whereas seed treatment with untreated oospores gave no significant reduction in disease”
Claim · model-written summary
Cellulase-pretreated P. oligandrum oospores controlled sugar beet damping-off only at pH 7.0 and 7.5.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise2
- Treatment
- cellulase pretreated oosporese2
- Interactor
- P. oligandrumPythium oligandrume2biocontrol_agent
- Outcome
- pre‐ and postemergence damping‐offe2
- Direction
- controle2
- Qualifier
- at pH 7.0 and 7.5 onlye2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“controlled pre‐ and postemergence damping‐off of sugar beet caused by Pythium ultimum to a level similar to metalaxyl seed treatment”
e2“P. oligandrum (10 4 cellulase pretreated oospores/seed) was shown to control pre‐ and postemergence damping‐off of sugar beet at pH 7.0 and 7.5 only”
The same questions in other papers
seed treatment · disease · Beta vulgaris (beet)Positive and negative results
8 in the opposite direction
- positive
- positive
- positive
5 papers more in this group
See all 9 papers →fertilization · disease · Beta vulgaris (beet)Positive and negative results
2 papers in the same direction as this paper · 8 in the opposite direction
- positive
- positive
- positive
7 papers more in this group
See all 11 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.