Abstract
Sugar beet (Beta vulgaris L. cv. Monogerm C.S.F. 1971) seeds sown into Vineland fine sandy loam, infested with 15,500 H. schachtii juveniles/pot, showed little growth during an 11-week test in the greenhouse. Seedlings transplanted at 2, 4, and 6 weeks of age had 32, 30, and 31% less top weight and 71, 68, and 59% less root weight, respectively, compared to controls grown in nematode-free soil. Nematode reproduction in both direct-seeded and transplanted sugar beets was limited and related to root weight. Shoot/root ratios were increased by the nematodes in all nematode-infected beets compared to those grown in soil without nematodes. In contrast to seeding or transplanting sugar beets into nematode-infested Vineland fine sandy loam, an inoculation of Beverly fine sandy loam supporting 0 (seeds), 2-, 4-, and 6-week-old sugar beet seedlings with 7,400 juveniles/pot, followed by 11 weeks of growth in the growth-room, resulted in top weight losses of only 13, 3, 18, and 15% and losses in root weight of 44, 38, 36, and 38%, respectively. Nematode reproduction was high and all shoot/root ratios were increased by the nematode compared to the noninoculated controls. These experiments have shown that sugar beets sown into nematode-infested soil are damaged much more heavily by H. schachtii juveniles than seeds inoculated with the nematode immediately following sowing. Results indicate that an increase in tolerance of sugar beets to attack by H. schachtii does not occur beyond the first 2 weeks of growth and that transplanting damage lowers the tolerance of seedlings to nematode attack.
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Claims 10
Claim · model-written summary
Sugar beet seedlings transplanted at 2, 4 and 6 weeks had 32, 30 and 31% less top weight than nematode-free controls in infested soil.
- Taxon
- Sugar beet
Beta vulgaris subsp. vulgarise0 - Material
- Monogerm C.S.F. 1971e0
- Treatment
- Seedlings transplanted at 2, 4, and 6 weeks of agee1
- Interactor
- H. schachtiiHeterodera schachtiie0pathogen
- Outcome
- top weighte1
- Direction
- lesse1
- Value
- 32, 30, and 31%e1
- Comparator
- controls grown in nematode-free soile2
- Setting
- greenhousee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sugar beet (Beta vulgaris L. cv. Monogerm C.S.F. 1971) seeds sown into Vineland fine sandy loam, infested with 15,500 H. schachtii juveniles/pot, showed little growth during an 11-week test in the greenhouse”
e1“Seedlings transplanted at 2, 4, and 6 weeks of age had 32, 30, and 31% less top weight”
e2“compared to controls grown in nematode-free soil”
Claim · model-written summary
Sugar beet seedlings transplanted at 2, 4 and 6 weeks had 71, 68 and 59% less root weight than nematode-free controls in infested soil.
- Taxon
- Sugar beetBeta vulgaris subsp. vulgarise0
- Treatment
- Seedlings transplanted at 2, 4, and 6 weeks of agee1
- Interactor
- H. schachtiiHeterodera schachtiie0pathogen
- Outcome
- root weighte2
- Direction
- lesse2
- Value
- 71, 68, and 59%e2
- Comparator
- controls grown in nematode-free soile3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sugar beet (Beta vulgaris L. cv. Monogerm C.S.F. 1971) seeds sown into Vineland fine sandy loam, infested with 15,500 H. schachtii juveniles/pot, showed little growth during an 11-week test in the greenhouse”
e1“Seedlings transplanted at 2, 4, and 6 weeks of age”
e2“and 71, 68, and 59% less root weight, respectively”
e3“compared to controls grown in nematode-free soil”
Claim · model-written summary
Nematode reproduction in direct-seeded and transplanted sugar beets was limited.
- Taxon
- sugar beetsBeta vulgaris subsp. vulgarise1
- Interactor
- H. schachtiiHeterodera schachtiie0pathogen
- Outcome
- Nematode reproductione1
- Direction
- limitede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sugar beet (Beta vulgaris L. cv. Monogerm C.S.F. 1971) seeds sown into Vineland fine sandy loam, infested with 15,500 H. schachtii juveniles/pot, showed little growth during an 11-week test in the greenhouse”
e1“Nematode reproduction in both direct-seeded and transplanted sugar beets was limited and related to root weight”
Claim · model-written summary
Nematode reproduction in sugar beets is related to root weight.
- Taxon
- sugar beetsBeta vulgaris subsp. vulgarise1
- Interactor
- H. schachtiiHeterodera schachtiie0pathogen
- Outcome
- Nematode reproductione1
- Qualifier
- related to root weighte1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sugar beet (Beta vulgaris L. cv. Monogerm C.S.F. 1971) seeds sown into Vineland fine sandy loam, infested with 15,500 H. schachtii juveniles/pot, showed little growth during an 11-week test in the greenhouse”
e1“Nematode reproduction in both direct-seeded and transplanted sugar beets was limited and related to root weight”
Claim · model-written summary
Nematodes increased the shoot/root ratio of infected sugar beets compared with soil without nematodes.
- Taxon
- Sugar beetBeta vulgaris subsp. vulgarise0
- Treatment
- by the nematodese1
- Outcome
- Shoot/root ratiose1
- Direction
- increasede1
- Comparator
- soil without nematodese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sugar beet (Beta vulgaris L. cv. Monogerm C.S.F. 1971) seeds sown into Vineland fine sandy loam, infested with 15,500 H. schachtii juveniles/pot, showed little growth during an 11-week test in the greenhouse”
e1“Shoot/root ratios were increased by the nematodes in all nematode-infected beets compared to those grown in soil without nematodes”
Claim · model-written summary
Inoculation of sugar beet seedlings with nematodes caused top weight losses of 13, 3, 18 and 15% compared with noninoculated controls.
- Taxon
- Sugar beetBeta vulgaris subsp. vulgarise0
- Treatment
- an inoculation of Beverly fine sandy loame1
- Interactor
- H. schachtiiHeterodera schachtiie0pathogen
- Outcome
- top weighte1
- Direction
- lossese1
- Value
- 13, 3, 18, and 15%e1
- Comparator
- the noninoculated controlse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sugar beet (Beta vulgaris L. cv. Monogerm C.S.F. 1971) seeds sown into Vineland fine sandy loam, infested with 15,500 H. schachtii juveniles/pot, showed little growth during an 11-week test in the greenhouse”
e1“an inoculation of Beverly fine sandy loam supporting 0 (seeds), 2-, 4-, and 6-week-old sugar beet seedlings with 7,400 juveniles/pot, followed by 11 weeks of growth in the growth-room, resulted in top weight losses of only 13, 3, 18, and 15%”
e2“compared to the noninoculated controls”
Claim · model-written summary
Inoculation of sugar beet seedlings with nematodes caused root weight losses of 44, 38, 36 and 38% compared with noninoculated controls.
- Taxon
- Sugar beetBeta vulgaris subsp. vulgarise0
- Treatment
- an inoculation of Beverly fine sandy loame1
- Interactor
- H. schachtiiHeterodera schachtiie0pathogen
- Outcome
- root weighte2
- Direction
- lossese2
- Value
- 44, 38, 36, and 38%e2
- Comparator
- the noninoculated controlse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sugar beet (Beta vulgaris L. cv. Monogerm C.S.F. 1971) seeds sown into Vineland fine sandy loam, infested with 15,500 H. schachtii juveniles/pot, showed little growth during an 11-week test in the greenhouse”
e1“an inoculation of Beverly fine sandy loam”
e2“losses in root weight of 44, 38, 36, and 38%”
e3“compared to the noninoculated controls”
Claim · model-written summary
Nematode reproduction was high in the inoculated sugar beets.
- Taxon
- Sugar beetBeta vulgaris subsp. vulgarise0
- Outcome
- Nematode reproductione1
- Direction
- highe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sugar beet (Beta vulgaris L. cv. Monogerm C.S.F. 1971) seeds sown into Vineland fine sandy loam, infested with 15,500 H. schachtii juveniles/pot, showed little growth during an 11-week test in the greenhouse”
e1“Nematode reproduction was high and all shoot/root ratios were increased by the nematode compared to the noninoculated controls”
Claim · model-written summary
An increase in tolerance of sugar beets to H. schachtii does not occur beyond the first 2 weeks of growth.
- Taxon
- sugar beetsBeta vulgaris subsp. vulgarise1
- Treatment
- beyond the first 2 weeks of growthe1
- Interactor
- H. schachtiiHeterodera schachtiie1pathogen
- Outcome
- an increase in tolerancee1
- Direction
- no_changeinferrede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Results indicate that an increase in tolerance of sugar beets to attack by H. schachtii does not occur beyond the first 2 weeks of growth”
Claim · model-written summary
Transplanting damage lowers the tolerance of seedlings to nematode attack.
- Taxon
- sugar beetsBeta vulgaris subsp. vulgarise2
- Treatment
- transplanting damagee1
- Outcome
- tolerance of seedlings to nematode attacke1
- Direction
- lowerse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“transplanting damage lowers the tolerance of seedlings to nematode attack”
e2“an increase in tolerance of sugar beets”
The same questions in other papers
transplanting · Heterodera schachtii · Beta vulgaris (beet)Positive and negative results
1 in the opposite direction
- positive
inoculation · Heterodera schachtii · Beta vulgaris (beet)Results agree
4 papers in the same direction as this paper
- negative
- negative
- negative
1 paper more in this group
See all 5 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.