Intervention effectmodel-written summary

The calcium nitrate yield advantage did not hold for Superior potato.

A claim from Potato Seed Piece Calcium can Influence Tuber Yield · 1996

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

The calcium nitrate yield advantage did not hold for Superior potato.

Taxon
potato plantsSolanum tuberosume0
Material
Superiore2
Treatment
Calcium nitrate-treated seed tuberse1
Outcome
yieldse1
Direction
did not hold truee2
Comparator
ammonium nitrate and N-Hibe1

Not reportedGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum tuberosum
Solanum tuberosum · TaxonScott Bauer, USDA ARS · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Field growing potato plants were treated with supplemental calcium during tuber bulking”

✓ located verbatim in the source · abstract, characters 440–527
e1

“Calcium nitrate-treated seed tubers produced higher yields compared to ammonium nitrate and N-Hib in `Atlantic' in `Dark Red Norland'”

✓ located verbatim in the source · abstract, characters 1073–1206
e2

“This trend did not hold true for `Superior'”

✓ located verbatim in the source · abstract, characters 1208–1251

Title

Potato Seed Piece Calcium can Influence Tuber Yield

Christopher C. Gunter; Matthew D. Kleinhenz; Jiwan P. Palta HortScience 1996. doi:10.21273/hortsci.31.4.592d

Other claims from this paper (3)

Record rev-94de378dfa921db1be0b5f2364dce94eebc55adc3df2299d849cf2bf20eb341d · schema claims-v0.9 · position 3 in the model’s answer

calcium atom · yield · Solanum tuberosum (potato)Results differ

18 papers: 16 positive, 2 negative or no effect

2 papers in the same direction as this claim · 15 reporting no difference from an alternative

  1. positive
    Calcium at 0.06% increased total potato yield to 18.6 t ha−1.

    Calcium and Boron Effect on Production and Quality of Autumn Potato Crop Under Chilling Temperature · 2020 · compared with control treatment

    No difference from an alternative

  2. positive
    Ca and farm yard manure substantially improved Rangpuria yield.

    Management strategies for sustainable yield of potato crop under high temperature · 2016

    No difference from an alternative

  3. positive
    Ca(H2PO4)2 increased dry matter yield and P concentration relative to the non-fertilized control.

    The phosphorus fertilizer value of bone char for potatoes, wheat, and onions: first results · 2012 · compared with non-fertilized control

    No difference from an alternative

  4. positive
    Spraying potato with sorbitol-chelated calcium increased yield by 14.23% compared with calcium nitrate.

    Calcium-sorbitol Chelating Technology and Application in Potatoes · 2020 · compared with inorganic calcium nitrate

    No difference from an alternative

  5. positive
    Calcium spray at 1000 mg.L-1 was superior for plant yield.

    EFFECT OF FOLIAR APPLICATION WITH CALCIUM, MAGNESIUM AND FERTILIZING WITH HUMIC ACID ON GROWTH , YIELD, AND STORAGE ABILITY OF POTATO TUBERS. · 2018

    No difference from an alternative

  6. positive
    Calcium nutrient application improved potato tuber yield relative to the control.

    Reducing Severity of Late Blight (Phytophthora infestans) and Improving Potato (Solanum tuberosum L.) Tuber Yield with Pre-Harvest Application of Calcium Nutrients · 2017 · compared with control treatment

    No difference from an alternative

  7. positive
    Ten mM calcium slightly improved harvest index in ‘Bintje’.

    Effects of calcium concentrations in medium on microtuberization of potato (Solanum tuberosum L.) · 2005

    No difference from an alternative

  8. positive
    Calcium fertilization increased potato tuber yield by 16% across site-years.

    Holistic Assessment of Calcium Fertilization in Potato: Diagnostic, Productivity, and Tuber Quality · 2022

    No difference from an alternative

9 papers more in this group

See all 18 papers →

nitrogen · yield · Solanum tuberosum (potato)Results differ

132 papers: 109 positive, 23 negative or no effect

23 papers in the same direction as this claim · 108 reporting no difference from an alternative

  1. positive
    Well-watered, sufficient nitrogen, and well-watered combined with sufficient nitrogen increased potato yield, mainly by enhancing source capacity.

    Regulation Effects of Water and Nitrogen on the Source-Sink Relationship in Potato during the Tuber Bulking Stage · 2016

    No difference from an alternative

  2. positive
    Nitrogen application could alleviate the drought-induced reduction in tuber yield and total biomass.

    Yield and Physiological Response of Potatoes Indicate Different Strategies to Cope with Drought Stress and Nitrogen Fertilization · 2016

    No difference from an alternative

  3. positive
    Mixed nitrogen significantly increased tuber dry weight relative to either nitrogen form alone.

    Study of various NH4+/NO3−mixtures for enhancing growth of potatoes · 1993 · compared with single NH4+ or NO3- form

    No difference from an alternative

  4. positive
    Yields were higher with CRU at 150 kg N/ha than with CAN at 150 or 200 kg N/ha in potato.

    Efficiency of Controlled‐Release Urea for a Potato Production System in Quebec, Canada · 2011 · compared with 150CAN or 200CAN

    No difference from an alternative

  5. positive
    In 1998 a maximum potato yield of 40.8 t/ha was obtained at Kufri (Shimla) with 180 kg N, 100 kg P2O5 and 150 kg K2O per hectare, against 14.6 t/ha at the control plots.

    Potassium and integrated nutrient management in potato. · 2002 · compared with control plots

    No difference from an alternative

  6. positive
    Low N produced higher harvest index and N harvest index.

    Precision phenotyping of contrasting potato (Solanum tuberosum L.) varieties in a novel aeroponics system for improving nitrogen use efficiency: In search of key traits and genes · 2020

    No difference from an alternative

  7. positive
    Half inorganic NPK plus half organic RDN improved tuber yield, nutrient uptake, soil fertility and returns relative to other treatments.

    Productivity and Soil Health of Potato (Solanum tuberosum L.) Field as Influenced by Organic Manures, Inorganic Fertilizers and Biofertilizers under High Altitudes of Eastern Himalayas · 2012 · compared with other treatments

    No difference from an alternative

  8. positive
    Gross return was 10% higher with POCU than with urea.

    Evaluation of Polyolefin-coated Urea for Potato Production on a Sandy Soil · 2001 · compared with urea

    No difference from an alternative

123 papers more in this group

See all 132 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.