Claim · model-written summary
Nitrogen accelerated onion maturity in every year.
- Taxon
- onion crop (Allium cepaL.)
Allium cepae1 - Treatment
- Nitrogene0
- Outcome
- maturitye0
- Direction
- acceleratede0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen stimulated early development and always accelerated maturity as measured by the percentage of onion tops down in middle or later August.”
e1“onion crop (Allium cepaL.)”
Title
Consequences of not fertilizing onions on organic soils with high soil test values
P.L. Minotti; K.W. Stone Communications in Soil Science and Plant Analysis 1988. doi:10.1080/00103628809368058
Other claims from this paper (11)
- Intervention effect Omitting phosphorus and potassium did not harm onion crops until the third year in one experiment.
- Intervention effect Another onion experiment showed no response to phosphorus and potassium after four years of omission.
- Intervention effect Soil test levels declined substantially without P and K fertilization in onion plots.
- Intervention effect Soil test levels also declined at the stated P and K fertilizer rates, to a lesser degree.
- Intervention effect Nitrogen increased onion yield in most years.
- Intervention effect Nitrogen stimulated early onion development.
- Intervention effect Applying N raised its concentration in onion leaves or immature bulbs at midseason.
- Intervention effect Applying P raised its concentration in onion leaves or immature bulbs at midseason.
- Intervention effect Applying K raised its concentration in onion leaves or immature bulbs at midseason.
- Recommendation Reduced P and K fertilizer may be low risk on high-testing onion soil if soil tests are monitored annually.
- Recommendation Eliminating nitrogen may be risky for early planted onions.