Claim · model-written summary
Higher nitrogen rates increased tuber number.
- Taxon
- potato
Solanum tuberosume1 - Treatment
- Nitrogen ratese0
- Outcome
- number of tuberse0
- Direction
- positively influencede0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen rates positively influenced the number of tubers”
e1“potato cv. Spunta”
Title
Nitrogen and Potassium Fertilization Responses of Potato (Solanum tuberosum) cv. Spunta
V. Kavvadias; C. Paschalidis; G. Akrivos; et al. Communications in Soil Science and Plant Analysis 2012. doi:10.1080/00103624.2012.634711
Other claims from this paper (15)
- Intervention effect Potato yield responded weakly to potassium fertilizer on soils low in nitrogen and potassium.
- Observation The greatest first-year tuber yield was 29.81 t ha–1 at 495 kg N ha–1 and 112 kg K2O ha–1.
- Observation The greatest second-year tuber yield was 27.13 t ha–1 with 225 kg ha–1 potassium.
- Intervention effect Treatments did not significantly differ in mean fresh weight.
- Intervention effect 495 kg N ha–1 significantly reduced potato harvest index relative to 330 kg N ha–1.
- Observation At 660 kg N ha–1, harvest index reached its greatest significant value.
- Intervention effect Potassium fertilization had no significant influence on harvest index.
- Intervention effect 450 kg K2O ha–1 significantly increased tuber number over lower potassium rates.
- Intervention effect 675 kg K2O ha–1 significantly decreased tuber number.
- Intervention effect Nitrogen fertilization significantly increased tuber dry matter concentration in both years.
- Intervention effect Potassium fertilization reduced tuber dry matter concentration in the first year.
- Intervention effect Nitrogen application did not change tuber nitrogen concentration.
- Intervention effect Nitrogen application strongly increased tuber nitrate concentration, which ranged from 360 to 1382 mg kg–1 wet mass.
- Association Tuber nitrate was negatively correlated with potato tuber yield.
- Association Tuber response to potassium fertilization did not follow the applied potassium rate.