Abstract
A formulation of phosphonate (AG3) was tested as a seed treatment for the control of Pythium damping-off of cucumber (Cucumis sativus L.) plants under controlled environment and field conditions. Cucumber seed were treated by soaking for 10 min in phosphonate solution. They were then planted into peat-based mix or sandy-loam soil mixed with Pythium aphanidermatum or P. ultimum inoculum or into muck soil naturally infested with P. irregulare, P. ultimum, and other Pythium spp. Under growth-room conditions, phosphonate seed treatment provided more than 80% control of damping-off in all infested substrates tested. Effective disease control was obtained even when treated seed were stored for 5 weeks and up to 18 months prior to planting. In microplots containing naturally infested muck soil, phosphonate seed treatment decreased the percentage of diseased cucumber plants and increased total fresh weights compared with untreated seed and phosphonate post-planting drench. In field-plot tests 6 weeks after planting treated seed in Pythium-infested muck soil, cucumber stands were 63% compared with 18% in the control, which had no phosphonate exposure, and 53% in the post-planting drench. Tests for potential phytotoxicity in the greenhouse showed that radish and bok choy germination was reduced by phosphonate treatment but corn, cucumber, soybean, sugar beet, tomato, and wheat were not affected. Phosphonate seed treatment is a cost-effective way of protecting cucumber plants from Pythium damping-off.
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Claims 8
Claim · model-written summary
Phosphonate seed treatment controlled more than 80% of damping-off under growth-room conditions.
- Treatment
- phosphonate seed treatmente0
- Outcome
- damping-offe0
- Direction
- controle0
- Value
- more than 80%e0
- Setting
- growth-room conditionse0
Not reportedTaxonComparator
Verbatim
e0“Under growth-room conditions, phosphonate seed treatment provided more than 80% control of damping-off in all infested substrates tested”
Claim · model-written summary
Disease control persisted after treated seed were stored for five weeks and up to 18 months.
Not reportedTaxon
Verbatim
e0“Effective disease control was obtained even when treated seed were stored for 5 weeks and up to 18 months prior to planting”
Claim · model-written summary
Seed treatment decreased diseased cucumber plants versus untreated seed and post-planting drench.
- Taxon
- cucumber
Cucumis sativuse0 - Treatment
- phosphonate seed treatmente0
- Outcome
- percentage of diseased cucumber plantse0
- Direction
- decreasede0
- Comparator
- untreated seed and phosphonate post-planting drenche0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“phosphonate seed treatment decreased the percentage of diseased cucumber plants and increased total fresh weights compared with untreated seed and phosphonate post-planting drench”
Claim · model-written summary
Seed treatment increased total fresh weights versus untreated seed and drench.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- phosphonate seed treatmente0
- Outcome
- total fresh weightse0
- Direction
- increasede0
- Comparator
- untreated seed and phosphonate post-planting drenche0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“phosphonate seed treatment decreased the percentage of diseased cucumber plants and increased total fresh weights compared with untreated seed and phosphonate post-planting drench”
Claim · model-written summary
Treated cucumber stands were 63% versus 18% untreated control and 53% drench.
Not reportedTreatmentDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cucumber stands were 63% compared with 18% in the control, which had no phosphonate exposure, and 53% in the post-planting drench”
Claim · model-written summary
Phosphonate reduced radish and bok choy germination.
- Taxon
- radish and bok choy
Raphanus sativus.jpg?width=60)
Brassica rapa subsp. chinensise0 - Treatment
- phosphonate treatmente0
- Outcome
- germinatione0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“radish and bok choy germination was reduced by phosphonate treatment”
Claim · model-written summary
Phosphonate did not affect germination of corn, cucumber, soybean, sugar beet, tomato or wheat.
- Taxon
- corn, cucumber, soybean, sugar beet, tomato, and wheat
Beta vulgaris subsp. vulgarisCucumis sativus
Glycine max
Solanum lycopersicum
Triticum aestivum
Zea mays subsp. mayse0 - Outcome
- were not affectede0
- Direction
- not affectede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“corn, cucumber, soybean, sugar beet, tomato, and wheat were not affected”
Claim · model-written summary
Authors recommend phosphonate seed treatment to protect cucumber against Pythium damping-off.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- Phosphonate seed treatmente0
- Outcome
- protecting cucumber plants from Pythium damping-offe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphonate seed treatment is a cost-effective way of protecting cucumber plants from Pythium damping-off”
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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.