Claim · model-written summary
Broccoli following cowpeas with reduced fertilizer N usually had lower petiole N than controls.
- Taxon
- broccoli
Brassica oleracea var. italicae0 - Treatment
- reduced fertilizer N inputs which succeeded cowpease0
- Outcome
- Petiole N concentrationse0
- Direction
- lowere0
- 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“Petiole N concentrations of broccoli plants with reduced fertilizer N inputs which succeeded cowpeas usually were lower than those of control plants.”
Title
Utilization of Cowpea Crop Residues to Reduce Fertilizer Nitrogen Inputs with Fall Broccoli
Judith L. Schroeder; Brian A. Kahn; J. Q. Lynd Crop Science 1998. doi:10.2135/cropsci1998.0011183x003800030021x
Other claims from this paper (8)
- Intervention effect Cowpea residues alone did not supply enough nitrogen for optimum marketable broccoli production.
- Intervention effect Marketable broccoli yields sometimes did not differ significantly between controls and cowpea residue plots receiving 84 kg ha −1 fertilizer N.
- Intervention effect Broccoli transplant mortality tended to increase in cowpea residue plots.
- Intervention effect Cowpeas negatively affected broccoli stand establishment in the fourth study.
- Association Cowpeas and trifluralin interacted in their effects on broccoli yield.
- Association Soil nitrate at 15‐ to 30‐cm depth at planting indicated apparent nitrate use during microbial decomposition of cowpea residue.
- Observation Cowpea–broccoli succession did not consistently reduce fertilizer N without adverse effects on broccoli.
- Recommendation The authors do not recommend cowpea residues to reduce fertilizer N in fall broccoli.