Abstract
Phosphorus (P) is an element that is potatoes require in large amounts. Soil pH is a crucial factor impacting phosphorus availability in potato production. This study was conducted to evaluate the influence of P application rates on the P efficiency for tuber yield, specific gravity, and P uptake. Additionally, the relationship between soil pH and total potato tuber yield was determined. Six rates of P fertilization (0–280 kg P ha−1) were applied at twelve different sites across Northern Maine. Yield parameters were not responsive to P application rates. However, regression analysis showed that soil pH was significantly correlated with total potato tuber yield(R2 = 0.38). Sites with soil pH values < 6 had total tuber yields, marketable tuber yields, tuber numbers per plant, and total tuber mean weights that were all higher than these same parameters at sites with soil pH ≥ 6. All sites with soil pH< 6 showed a highly correlated relationship between P uptake and petiole dry weight (R2 = 0.76). The P application rate of 56 kg P ha−1 was the best at sites with a soil pH < 6, but 0–56 kg P ha−1 was the best at sites with soil pH ≥ 6.
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Claims 9
Claim · model-written summary
Potato yield parameters did not respond to phosphorus application rate.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- P application ratese0
- Outcome
- Yield parameterse0
- Direction
- not responsivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield parameters were not responsive to P application rates.”
t0“Potato”
Claim · model-written summary
Soil pH was significantly correlated with total potato tuber yield, with R2 of 0.38.
- Taxon
- potatoSolanum tuberosume0
- Outcome
- total potato tuber yielde0
- Value
- R2 = 0.38e0
- Setting
- soil pHe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil pH was significantly correlated with total potato tuber yield(R2 = 0.38).”
Claim · model-written summary
Sites below pH 6 had higher total tuber yield than sites at or above pH 6.
- Taxon
- PotatoSolanum tuberosumt0
- Outcome
- total tuber yieldse0
- Direction
- highere0
- Comparator
- sites with soil pH ≥ 6e0
- Setting
- soil pH values < 6e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sites with soil pH values < 6 had total tuber yields, marketable tuber yields, tuber numbers per plant, and total tuber mean weights that were all higher than these same parameters at sites with soil pH ≥ 6.”
t0“Potato”
Claim · model-written summary
Sites below pH 6 had higher marketable tuber yield than sites at or above pH 6.
- Taxon
- PotatoSolanum tuberosumt0
- Outcome
- marketable tuber yieldse0
- Direction
- highere0
- Comparator
- sites with soil pH ≥ 6e0
- Setting
- soil pH values < 6e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sites with soil pH values < 6 had total tuber yields, marketable tuber yields, tuber numbers per plant, and total tuber mean weights that were all higher than these same parameters at sites with soil pH ≥ 6.”
t0“Potato”
Claim · model-written summary
Sites below pH 6 had higher tuber numbers per plant than sites at or above pH 6.
- Taxon
- PotatoSolanum tuberosumt0
- Outcome
- tuber numbers per plante0
- Direction
- highere0
- Comparator
- sites with soil pH ≥ 6e0
- Setting
- soil pH values < 6e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sites with soil pH values < 6 had total tuber yields, marketable tuber yields, tuber numbers per plant, and total tuber mean weights that were all higher than these same parameters at sites with soil pH ≥ 6.”
t0“Potato”
Claim · model-written summary
Sites below pH 6 had higher mean tuber weight than sites at or above pH 6.
- Taxon
- PotatoSolanum tuberosumt0
- Outcome
- total tuber mean weightse0
- Direction
- highere0
- Comparator
- sites with soil pH ≥ 6e0
- Setting
- soil pH values < 6e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sites with soil pH values < 6 had total tuber yields, marketable tuber yields, tuber numbers per plant, and total tuber mean weights that were all higher than these same parameters at sites with soil pH ≥ 6.”
t0“Potato”
Claim · model-written summary
At sites below pH 6, phosphorus uptake correlated strongly with petiole dry weight, with R2 of 0.76.
- Taxon
- PotatoSolanum tuberosumt0
- Organ / stage
- petiolee0
- Outcome
- P uptakee0
- Value
- R2 = 0.76e0
- Setting
- soil pH< 6e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All sites with soil pH< 6 showed a highly correlated relationship between P uptake and petiole dry weight (R2 = 0.76).”
t0“Potato”
Claim · model-written summary
At sites below pH 6, 56 kg P ha−1 was the best application rate.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- P application rate of 56 kg P ha−1e0
- Outcome
- best at sites with a soil pH < 6e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The P application rate of 56 kg P ha−1 was the best at sites with a soil pH < 6, but 0–56 kg P ha−1 was the best at sites with soil pH ≥ 6.”
t0“Potato”
Claim · model-written summary
At sites at or above pH 6, 0–56 kg P ha−1 was the best rate range.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- 0–56 kg P ha−1e0
- Outcome
- best at sites with soil pH ≥ 6e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The P application rate of 56 kg P ha−1 was the best at sites with a soil pH < 6, but 0–56 kg P ha−1 was the best at sites with soil pH ≥ 6.”
t0“Potato”
The same questions in other papers
phosphorus · yield · Solanum tuberosum (potato)Results differ
8 papers in the same direction as this paper · 42 in the opposite direction
- positive
- positive
- positive
47 papers more in this group
See all 51 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.