Abstract
Summary The use of supplementary foliar N, P and K to ameliorate the reduced nutrient uptake of potato plants infected by potato cyst nematode (PCN) were investigated. The potato cv. Pentland Dell achieved yields in plots not treated with oxamyl similar to those found in plots treated with oxamyl when supplementary foliar N or N plus K was applied to plots infested with 13 eggs g ‐1 soil of Globodera pallida. Yield improvements from foliar N applications were attributed to increased leaf area index but the reason for yield increases from foliar N plus K applications could not be clarified. In a second experiment, where PCN infestation was 76 eggs g ‐l soil, the potato cv. Sante gave yields up to 19% higher than a standard fertiliser practice when supplementary foliar N was applied to plots not treated with oxamyl. Nutrient analysis showed that without oxamyl there were significantly lower concentrations of N, P and K in whole plant dry matter at 58 days after planting (DAP) but higher levels of N in the fourth leaf dry matter at 98 DAP. Emergence was significantly advanced by the use of oxamyl in both experiments. Sante dramatically reduced populations of Globodera rostochiensis from an average of 76 eggs g ‐1 soil to 7 eggs g ‐1 soil. Foliar application of nutrients is a promising method of ameliorating the effects on potatoes of PCN invasion but the nutrient concentrations and timing of individual sprays need to be more closely matched to crop requirement than was possible in our experiments
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Claims 9
Claim · model-written summary
Pentland Dell given foliar N without oxamyl yielded similarly to oxamyl-treated plots under G. pallida infestation.
- Taxon
- potato
Solanum tuberosume0 - Material
- Pentland Delle0
- Treatment
- supplementary foliar Ne0
- Interactor
- Globodera pallida
Globodera pallidae0pathogen - Outcome
- yieldse0
- Direction
- similare0
- Comparator
- plots treated with oxamyle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The potato cv. Pentland Dell achieved yields in plots not treated with oxamyl similar to those found in plots treated with oxamyl when supplementary foliar N or N plus K was applied to plots infested with 13 eggs g ‐1 soil of Globodera pallida.”
Claim · model-written summary
Pentland Dell given foliar N plus K without oxamyl yielded similarly to oxamyl-treated plots.
- Taxon
- potatoSolanum tuberosume0
- Material
- Pentland Delle0
- Treatment
- N plus Ke0
- Interactor
- Globodera pallidaGlobodera pallidae0pathogen
- Outcome
- yieldse0
- Direction
- similare0
- Comparator
- plots treated with oxamyle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The potato cv. Pentland Dell achieved yields in plots not treated with oxamyl similar to those found in plots treated with oxamyl when supplementary foliar N or N plus K was applied to plots infested with 13 eggs g ‐1 soil of Globodera pallida.”
Claim · model-written summary
Foliar N yield improvement was attributed to increased leaf area index.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- foliar N applicationse0
- Outcome
- Yield improvementse0
- Qualifier
- increased leaf area indexe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield improvements from foliar N applications were attributed to increased leaf area index”
t0“potatoes”
Claim · model-written summary
Sante yield was up to 19% higher with supplementary foliar N than standard fertilizer practice without oxamyl.
- Taxon
- potatoSolanum tuberosume0
- Material
- Santee0
- Treatment
- supplementary foliar Ne0
- Outcome
- yieldse0
- Direction
- highere0
- Value
- 19%e0
- Comparator
- standard fertiliser practicee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the potato cv. Sante gave yields up to 19% higher than a standard fertiliser practice when supplementary foliar N was applied to plots not treated with oxamyl”
Claim · model-written summary
Without oxamyl, whole-plant N, P and K concentrations were significantly lower at 58 DAP.
- Taxon
- potatoSolanum tuberosumt0
- Organ / stage
- whole plant dry mattere0
- Treatment
- without oxamyle0
- Outcome
- concentrations of N, P and Ke0
- Direction
- lowere0
- Qualifier
- 58 days after planting (DAP)e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“without oxamyl there were significantly lower concentrations of N, P and K in whole plant dry matter at 58 days after planting (DAP)”
t0“potatoes”
Claim · model-written summary
Without oxamyl, fourth-leaf N was higher at 98 DAP.
- Taxon
- potatoSolanum tuberosumt0
- Organ / stage
- fourth leaf dry mattere0
- Treatment
- without oxamyle1
- Outcome
- levels of Ne0
- Direction
- highere0
- Qualifier
- 98 DAPe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but higher levels of N in the fourth leaf dry matter at 98 DAP”
t0“potatoes”
e1“without oxamyl there were significantly lower concentrations of N, P and K in whole plant dry matter at 58 days after planting (DAP) but higher levels of N in the fourth leaf dry matter at 98 DAP”
Claim · model-written summary
Oxamyl significantly advanced potato emergence in both experiments.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- oxamyle0
- Outcome
- Emergencee0
- Direction
- advancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Emergence was significantly advanced by the use of oxamyl in both experiments.”
t0“potatoes”
Claim · model-written summary
Sante reduced G. rostochiensis populations from 76 to 7 eggs per gram soil.
- Taxon
- potatoSolanum tuberosumt0
- Material
- Santee0
- Interactor
- Globodera rostochiensisGlobodera rostochiensise0pathogen
- Outcome
- populations of Globodera rostochiensise0
- Direction
- reducede0
- Value
- 7 eggs g ‐1 soile0
- Qualifier
- 76 eggs g ‐1 soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sante dramatically reduced populations of Globodera rostochiensis from an average of 76 eggs g ‐1 soil to 7 eggs g ‐1 soil.”
t0“potatoes”
Claim · model-written summary
The authors recommend better matching nutrient sprays to crop needs.
- Taxon
- potatoesSolanum tuberosumt0
- Outcome
- nutrient concentrations and timing of individual sprays need to be more closely matched to crop requiremente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the nutrient concentrations and timing of individual sprays need to be more closely matched to crop requirement”
t0“potatoes”
The same questions in other papers
oxamyl · growth · Solanum tuberosum (potato)Positive and negative results
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- positive
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187 papers more in this group
See all 191 papers →application · Globodera pallida · Solanum tuberosum (potato)Results agree
1 paper in the same direction as this paper
- positive
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.