Claim · model-written summary
Fertilizer nitrate-to-ammonium ratio did not affect tobacco crop quality.
- Taxon
- tobacco
Nicotiana tabacume1 - Treatment
- NO 3 ‐NH 4 ratio of the applied fertilizere0
- Outcome
- quality of the crop producede0
- Direction
- did not affecte0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The NO 3 ‐NH 4 ratio of the applied fertilizer did not affect the quality of the crop produced”
e1“flue‐cured tobacco was grown”
Title
Pieter J. Gous; T. R. Terrill; Wybe Kroontje Agronomy Journal 1971. doi:10.2134/agronj1971.00021962006300020007x
Other claims from this paper (12)
- Association Tobacco grew more rapidly on Appling soil late in the season.
- Association Appling soil produced higher cured-leaf yield.
- Association Appling soil produced higher crop value.
- Mechanism Differences in soil physical properties, especially drainage, were inferred to explain better growth on Appling soil.
- Intervention effect All fertilizer nitrogen as NH 4 gave the lowest cured-leaf yield in the first season.
- Intervention effect All fertilizer nitrogen as NH 4 gave the lowest cured-leaf value in the first season.
- Intervention effect Fertilizer nitrate-to-ammonium ratio did not affect stalk-to-leaf weight ratio.
- Intervention effect Nitrate-only application produced lower quality cured leaves in the second season.
- Mechanism Nitrate leaching was inferred to raise the fraction of low-quality leaves.
- Intervention effect Treatments did not significantly affect total particulate matter, nicotine content, or puff counts per cigarette.
- Association Seasonal rainfall differences were associated with large cured-leaf yield differences.
- Association Seasonal rainfall differences were associated with large cured-leaf value differences.