Claim · model-written summary
Soil NO 3 -N at 360 kg·ha −1 N ranged from 49.9 to 148.6 mg·kg −1, at least twice the level at 120 kg·ha −1 N.
- Taxon
- onion
Allium cepae0 - Treatment
- 360 kg·ha −1 N ratese1
- Outcome
- Soil NO 3 -Ne1
- Direction
- highe1
- Value
- 49.9 to 148.6 mg·kg −1e1
- Qualifier
- at least twicee1
- Comparator
- 120 kg·ha −1 N ratee1
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“intermediate-day onions ( Allium cepa L.)”
e1“Soil NO 3 -N for 240 and 360 kg·ha −1 N rates ranged from 36.6 to 113.7 and 49.9 to 148.6 mg·kg −1 , respectively, which was at least twice as high as that at 120 kg·ha −1 N rate.”
Title
Jongtae Lee; Jinseong Moon; Heedae Kim; et al. HortScience 2011. doi:10.21273/hortsci.46.3.470
Other claims from this paper (15)
- Association Nitrogen rate affected onion foliage weight on 21 Apr.
- Association Nitrogen rate affected onion foliage weight on 23 May.
- Association Nitrogen rate influenced onion bulb weight on 23 May.
- Association Nitrogen rate influenced onion bulb weight at harvest.
- Intervention effect Onion yield differed significantly between zero nitrogen and every other nitrogen rate.
- Association Soil pH correlated with nitrogen fertilizer rate.
- Intervention effect Soil NO 3 -N at 240 kg·ha −1 N ranged from 36.6 to 113.7 mg·kg −1, at least twice the level at 120 kg·ha −1 N.
- Observation Nitrogen fertilizer use efficiency was highest at 120 kg·ha −1 N, at 36.0%.
- Observation Nitrogen fertilizer use efficiency at 240 kg·ha −1 N was 28.0%.
- Observation Nitrogen fertilizer use efficiency at 360 kg·ha −1 N was 20.6%.
- Intervention effect Phosphorus rate had no clear effect on phosphorus concentration in onion bulbs.
- Intervention effect Potassium rate had no clear effect on potassium concentration in onion bulbs.
- Intervention effect Higher potassium rates increased potassium concentration and uptake in onion leaves.
- Recommendation The authors conclude that compost and rice straw supplied enough phosphorus and potassium to grow onions without extra P or K fertilizer.
- Recommendation The authors conclude that 120 kg·ha −1 N produced as much onion bulb yield as higher N levels under these conditions.