Claim · model-written summary
Root yield had no or a slight decrease above its nitrogen optimum.
- Taxon
- Sugar Beet
Beta vulgaris subsp. vulgarist0 - Outcome
- Root yielde0
- Direction
- no or only a slight decreasee0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root yield showed no or only a slight decrease”
t0“Sugar Beet”
Title
Influence of Nitrogen Supply on Yield and Quality of Sugar Beet
Bernward Märländer Zeitschrift für Pflanzenernährung und Bodenkunde 1990. doi:10.1002/jpln.19901530508
Other claims from this paper (15)
- Intervention effect Root yield increased with nitrogen supply, peaking at 159 kg N/ha.
- Intervention effect Sugar yield increased with nitrogen supply, peaking at 136 kg N/ha.
- Intervention effect White sugar yield increased with nitrogen supply, peaking at 129 kg N/ha.
- Intervention effect Sugar and white sugar yield fell at nitrogen levels above optimum.
- Intervention effect Sugar concentration decreased as nitrogen supply increased.
- Intervention effect White sugar concentration decreased as nitrogen supply increased, with a greater response than sugar concentration.
- Observation Sugar concentration was highest at 32 kg N/ha.
- Intervention effect Sugar concentration declined slightly at nitrogen supply below 32 kg N/ha.
- Intervention effect Potassium concentration was unchanged with more nitrogen.
- Intervention effect Amino-N concentration increased greatly with more nitrogen.
- Intervention effect Sodium concentration increased slightly with more nitrogen, with its minimum at 36 kg N/ha.
- Intervention effect Sodium rose very slightly below 36 kg N/ha.
- Observation Sugar loss responded less to nitrogen than sodium and amino-N concentrations.
- Observation Sugar gain responded less than sugar loss.
- Observation White sugar yield dropped only 2% over a nitrogen range of about 100 kg N/ha around its broad optimum.