Claim · model-written summary
Differences in nitrogen parameters between preplant fertilized and control cowpeas did not persist through reproductive growth.
- Taxon
- Cowpea
Vigna unguiculatat0 - Treatment
- preplant‐fertilizede0
- Outcome
- these parameterse0
- Direction
- did not persiste0
- Comparator
- control plantse0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Differences between preplant‐fertilized and control plants for these parameters did not persist through reproductive growth”
t0“Cowpea”
Title
Cowpea Response to N Form, Rate, and Timing of Application1
R. B. Beverly; W. M. Jarrell Agronomy Journal 1984. doi:10.2134/agronj1984.00021962007600040037x
Other claims from this paper (12)
- Intervention effect Nitrogen application increased cowpea seed yield.
- Intervention effect Side dressing increased seed yield more than preplant fertilization.
- Intervention effect Side dressing at bloom increased yield compared with podfill application.
- Intervention effect UAN produced higher cowpea yields than calcium nitrate.
- Intervention effect The higher side dress nitrogen rate did not significantly increase seed yield.
- Intervention effect Preplant fertilization increased vegetative growth.
- Observation Shoot dry matter differences disappeared during the reproductive period.
- Intervention effect Nitrogen fertilization decreased symbiotic N2 fixation.
- Intervention effect Nitrogen fertilization increased mineral nitrogen uptake.
- Intervention effect Side dressing did cause nitrogen parameter differences during podfill.
- Mechanism Seed yield gains did not appear explained by increased growth, nitrogen accumulation, or nitrogen supply during podfill.
- Mechanism Authors propose yield increased because nitrogen fertilization inactivated fixation and reduced photosynthate consumption by nodules.