Claim · model-written summary
The cover crop rotation gave a slightly greater positive nitrogen balance at higher fertilizer rates.
- Treatment
- cover crop rotatione0
- Outcome
- N balancee0
- Direction
- greatere0
- Qualifier
- higher N fertilizer ratese0
Zea maysNot reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A slightly greater positive N balance at higher N fertilizer rates was due to the cover crop rotation”
e1“inbred maize (Zea mays L.) lines”
Title
Cover crop and nitrogen fertilizer influence on inbred maize performance and soil nitrogen
Ada Vilches-Ortega; David Sotomayor-Ramírez; Johanis Rivera-Zayas; et al. The Journal of Agriculture of the University of Puerto Rico 2022. doi:10.46429/jaupr.v106i1.21051
Other claims from this paper (11)
- Intervention effect Cowpea cover cropping did not affect maize yield.
- Intervention effect Fertilizer nitrogen affected seed yield in two of three years.
- Observation Optimum seed yield was 7,034 kg/ha at 135 kg N/ha fertilizer.
- Observation Optimum seed yield was 4,708 kg/ha at 90 kg N/ha fertilizer.
- Intervention effect Residual soil nitrogen tended to increase with fertilizer and cover crop.
- Association Net aboveground nitrogen balance increased with successive fertilizer levels.
- Observation The fallow nitrogen balance reached +516 kg N/ha.
- Observation The cover crop nitrogen balance reached +621 kg N/ha.
- Observation Some excess nitrogen was found in the soil profile.
- Recommendation The authors recommend cowpea cover cropping for long-term nitrogen recycling.
- Recommendation The authors recommend 90 to 135 kg N/ha, adjusted using soil inorganic nitrogen knowledge.