Abstract
Solubilized phenols and cresols, applied at the rate of 1s gal./sq.yd. at 5% strength on light sandy loam, have killed up to approximately half the population of potato‐root eelworm in the top 8 in of soil. When nematicide distribution was aided by rotavation on the same site, yields were approximately doubled compared with untreated areas. The eelworm population in the soil also increased, but not so much as that where no treatment had been applied. Under cold glasshouse conditions on light loam, high‐volume methods have greatly increased the yield of tomatoes compared with untreated plots, but the soil population of potato eelworm has also risen. 20 gal. to the square yard of 0·5% p‐m‐ cresol is better than 10 gal. of 1% by both criteria. There is evidence of a slow kill of cyst contents in soil samples stored in the laboratory. The high‐volume type of soil drench is shown to be highly effective under laboratory conditions. The importance of the initial water content of the soil is demonstrated. The superiority of the 20 gal. treatment over the 10 gal. one is confirmed. Investigations on kill in depth by very large applications of dilute nematicide in the same cold glasshouse have demonstrated the part played by the rate at which the material is applied. The degree of kill in the 6–12 in. soil layer is still inadequate. The practical applications of this type of nematicide are briefly discussed.
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Claims 12
Claim · model-written summary
Phenols and cresols killed up to half of potato-root eelworms in topsoil.
Not reportedComparator
Verbatim
e0“Solubilized phenols and cresols, applied at the rate of 1s gal./sq.yd. at 5% strength on light sandy loam, have killed up to approximately half the population of potato‐root eelworm in the top 8 in of soil.”
e1“Under cold glasshouse conditions on light loam, high‐volume methods have greatly increased the yield of tomatoes compared with untreated plots”
e2“but the soil population of potato eelworm has also risen.”
t0“POTATO‐ROOT EELWORM”
Claim · model-written summary
Rotavation aided nematicide distribution and approximately doubled yields.
- Taxon
- potato
Solanum tuberosume0e1e2t0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When nematicide distribution was aided by rotavation on the same site, yields were approximately doubled compared with untreated areas.”
e1“Under cold glasshouse conditions on light loam, high‐volume methods have greatly increased the yield of tomatoes compared with untreated plots”
e2“but the soil population of potato eelworm has also risen.”
t0“POTATO‐ROOT EELWORM”
Claim · model-written summary
Eelworm populations rose less with treatment than without treatment.
Verbatim
e0“The eelworm population in the soil also increased, but not so much as that where no treatment had been applied.”
e1“Under cold glasshouse conditions on light loam, high‐volume methods have greatly increased the yield of tomatoes compared with untreated plots”
e2“but the soil population of potato eelworm has also risen.”
t0“POTATO‐ROOT EELWORM”
Claim · model-written summary
High-volume treatment increased tomato yield in a cold glasshouse.
- Taxon
- tomatoes
Solanum lycopersicume0e1e2t0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under cold glasshouse conditions on light loam, high‐volume methods have greatly increased the yield of tomatoes compared with untreated plots”
e1“Under cold glasshouse conditions on light loam, high‐volume methods have greatly increased the yield of tomatoes compared with untreated plots”
e2“but the soil population of potato eelworm has also risen.”
t0“POTATO‐ROOT EELWORM”
Claim · model-written summary
The soil potato eelworm population rose under high-volume treatment.
Verbatim
e0“but the soil population of potato eelworm has also risen.”
e1“Under cold glasshouse conditions on light loam, high‐volume methods have greatly increased the yield of tomatoes compared with untreated plots”
e2“but the soil population of potato eelworm has also risen.”
t0“POTATO‐ROOT EELWORM”
Claim · model-written summary
Twenty gallons of 0.5% cresol outperformed ten gallons of 1% by both criteria.
- Taxon
- tomatoesSolanum lycopersicume0e1e2t0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“20 gal. to the square yard of 0·5% p‐m‐ cresol is better than 10 gal. of 1% by both criteria.”
e1“Under cold glasshouse conditions on light loam, high‐volume methods have greatly increased the yield of tomatoes compared with untreated plots”
e2“but the soil population of potato eelworm has also risen.”
t0“POTATO‐ROOT EELWORM”
Claim · model-written summary
Stored soil samples showed slow killing of cyst contents.
Verbatim
e0“There is evidence of a slow kill of cyst contents in soil samples stored in the laboratory.”
e1“Under cold glasshouse conditions on light loam, high‐volume methods have greatly increased the yield of tomatoes compared with untreated plots”
e2“but the soil population of potato eelworm has also risen.”
t0“POTATO‐ROOT EELWORM”
Claim · model-written summary
High-volume soil drench was highly effective in laboratory conditions.
Not reportedComparator
Verbatim
e0“The high‐volume type of soil drench is shown to be highly effective under laboratory conditions.”
e1“Under cold glasshouse conditions on light loam, high‐volume methods have greatly increased the yield of tomatoes compared with untreated plots”
e2“but the soil population of potato eelworm has also risen.”
t0“POTATO‐ROOT EELWORM”
Claim · model-written summary
Initial soil water content affected treatment performance.
Not reportedDirection
Verbatim
e0“The importance of the initial water content of the soil is demonstrated.”
e1“Under cold glasshouse conditions on light loam, high‐volume methods have greatly increased the yield of tomatoes compared with untreated plots”
e2“but the soil population of potato eelworm has also risen.”
t0“POTATO‐ROOT EELWORM”
Claim · model-written summary
The 20 gallon treatment was confirmed superior to the 10 gallon treatment.
- Taxon
- tomatoesSolanum lycopersicume0e1e2t0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The superiority of the 20 gal. treatment over the 10 gal. one is confirmed.”
e1“Under cold glasshouse conditions on light loam, high‐volume methods have greatly increased the yield of tomatoes compared with untreated plots”
e2“but the soil population of potato eelworm has also risen.”
t0“POTATO‐ROOT EELWORM”
Claim · model-written summary
Application rate affected depth of nematode killing.
Not reportedDirection
Verbatim
e0“Investigations on kill in depth by very large applications of dilute nematicide in the same cold glasshouse have demonstrated the part played by the rate at which the material is applied.”
e1“Under cold glasshouse conditions on light loam, high‐volume methods have greatly increased the yield of tomatoes compared with untreated plots”
e2“but the soil population of potato eelworm has also risen.”
t0“POTATO‐ROOT EELWORM”
Claim · model-written summary
Killing in the 6–12 inch soil layer remained inadequate.
Verbatim
e0“The degree of kill in the 6–12 in. soil layer is still inadequate.”
e1“Under cold glasshouse conditions on light loam, high‐volume methods have greatly increased the yield of tomatoes compared with untreated plots”
e2“but the soil population of potato eelworm has also risen.”
t0“POTATO‐ROOT EELWORM”
The same questions in other papers
insecticide · yield · Solanum tuberosum (potato)Results differ
21 papers in the same direction as this paper · 9 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- no effect
- no effect
28 papers more in this group
See all 32 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.