Abstract
SUMMARY In field samples taken on a grid pattern during four winters over an 80 ha farm there were many Trichodorus viruliferus (up to 3000/litre soil) in light soils but few in heavier soils. Depth samples taken during the summer showed Trichodorus to be the only nematode genus which was more numerous below plough depth than in the plough layer. In field experiments in the most heavily infested part of the farm, soil‐applied granular pesticides did not increase sugar yields following the dry spring of 1982; aldicarb increased sugar yields in one experiment following the wet spring of 1983 although it, and other granular pesticides, did not affect yield in an adjacent experiment where T. viruliferus were fewer. Irrigation during the dry summer of 1983 maintained relatively large populations of T. viruliferus , whereas in unirrigated plots without aldicarb populations declined by over 50%. Economic thresholds for T. viruliferus in 1983 at Broom's Barn were about 700/litre in unirrigated soil and 300/litre in irrigated soil.
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Claims 9
Claim · model-written summary
Trichodorus viruliferus was numerous in light soils, with up to 3000 per litre of soil
- Taxon
- sugar beet
Beta vulgaris subsp. vulgarist0 - Interactor
- Trichodorus viruliferusTrichodorus viruliferuse1pest
- Outcome
- Trichodorus viruliferuse1
- Value
- up to 3000/litre soile1
- Setting
- light soilse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“The effect of soil‐applied granular pesticides and irrigation on the yield of sugar beet in fields infested with Trichodorus viruliferus”
e1“there were many Trichodorus viruliferus (up to 3000/litre soil) in light soils but few in heavier soils”
Claim · model-written summary
Trichodorus was more numerous below plough depth than in the plough layer, the only nematode genus with this pattern
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Organ / stage
- below plough depthe2
- Interactor
- Trichodorus
Trichodoruse2pest - Outcome
- numerouse2
- Direction
- more numerouse2
- Comparator
- the plough layere2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“The effect of soil‐applied granular pesticides and irrigation on the yield of sugar beet in fields infested with Trichodorus viruliferus”
e2“Trichodorus to be the only nematode genus which was more numerous below plough depth than in the plough layer”
Claim · model-written summary
Soil-applied granular pesticides did not increase sugar beet yield after the dry spring of 1982
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- soil‐applied granular pesticidese3
- Outcome
- sugar yieldse3
- Direction
- did not increasee3
- Setting
- dry spring of 1982e3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“The effect of soil‐applied granular pesticides and irrigation on the yield of sugar beet in fields infested with Trichodorus viruliferus”
e3“soil‐applied granular pesticides did not increase sugar yields following the dry spring of 1982”
Claim · model-written summary
Aldicarb increased sugar beet yield in one experiment after the wet spring of 1983
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- aldicarbe4
- Outcome
- sugar yieldse4
- Direction
- increasede4
- Qualifier
- in one experimente4
- Setting
- wet spring of 1983e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“The effect of soil‐applied granular pesticides and irrigation on the yield of sugar beet in fields infested with Trichodorus viruliferus”
e4“aldicarb increased sugar yields in one experiment following the wet spring of 1983”
Claim · model-written summary
Other granular pesticides did not affect sugar beet yield in an adjacent experiment where Trichodorus viruliferus was less abundant
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- other granular pesticidese5
- Outcome
- yielde5
- Direction
- did not affecte5
- Qualifier
- in an adjacent experiment where T. viruliferus were fewere5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“The effect of soil‐applied granular pesticides and irrigation on the yield of sugar beet in fields infested with Trichodorus viruliferus”
e5“although it, and other granular pesticides, did not affect yield in an adjacent experiment where T. viruliferus were fewer”
Claim · model-written summary
Irrigation during the dry summer of 1983 maintained relatively large Trichodorus viruliferus populations compared with unirrigated plots without aldicarb
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- Irrigatione6
- Interactor
- T. viruliferusTrichodorus viruliferuse6pest
- Outcome
- populations of T. viruliferuse6
- Direction
- maintainede6
- Comparator
- unirrigated plots without aldicarbe6
- Setting
- dry summer of 1983e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“The effect of soil‐applied granular pesticides and irrigation on the yield of sugar beet in fields infested with Trichodorus viruliferus”
e6“Irrigation during the dry summer of 1983 maintained relatively large populations of T. viruliferus, whereas in unirrigated plots without aldicarb populations declined by over 50%”
Claim · model-written summary
Trichodorus viruliferus populations declined by over 50% in unirrigated plots without aldicarb
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- unirrigated plots without aldicarbe6
- Interactor
- T. viruliferusTrichodorus viruliferuse6pest
- Outcome
- populationse6
- Direction
- declinede6
- Value
- over 50%e6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“The effect of soil‐applied granular pesticides and irrigation on the yield of sugar beet in fields infested with Trichodorus viruliferus”
e6“Irrigation during the dry summer of 1983 maintained relatively large populations of T. viruliferus, whereas in unirrigated plots without aldicarb populations declined by over 50%”
Claim · model-written summary
Economic threshold for Trichodorus viruliferus at Broom's Barn in 1983 was about 700 per litre in unirrigated soil
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Outcome
- Economic thresholds for T. viruliferuse7
- Value
- 700/litree7
- Qualifier
- unirrigated soile7
- Setting
- Broom's Barne7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“The effect of soil‐applied granular pesticides and irrigation on the yield of sugar beet in fields infested with Trichodorus viruliferus”
e7“Economic thresholds for T. viruliferus in 1983 at Broom's Barn were about 700/litre in unirrigated soil and 300/litre in irrigated soil”
Claim · model-written summary
Economic threshold for Trichodorus viruliferus at Broom's Barn in 1983 was about 300 per litre in irrigated soil
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Outcome
- Economic thresholds for T. viruliferuse7
- Value
- 300/litree7
- Qualifier
- irrigated soile7
- Setting
- Broom's Barne7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“The effect of soil‐applied granular pesticides and irrigation on the yield of sugar beet in fields infested with Trichodorus viruliferus”
e7“Economic thresholds for T. viruliferus in 1983 at Broom's Barn were about 700/litre in unirrigated soil and 300/litre in irrigated soil”
The same questions in other papers
aldicarb · yield · Beta vulgaris (beet)Results differ
4 papers in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
- positive
2 papers more in this group
See all 6 papers →insecticide · yield · Beta vulgaris (beet)Positive and negative results
4 papers in the same direction as this paper · 8 in the opposite direction
- positive
- positive
- positive
9 papers more in this group
See all 13 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.