Claim · model-written summary
Green manure and rice straw nitrogen gave lower agronomic efficiency than split prilled urea.
- Taxon
- Rice
Oryza sativat0 - Treatment
- green manure and rice straw nitrogene0
- Outcome
- agronomic efficiencye0
- Direction
- Lowere0
- Comparator
- standard split application of prilled ureae0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lower grain yield, agronomic efficiency (Δgrain per kg total applied nitrogen), and apparent nitrogen uptake were obtained from green manure and rice straw nitrogen as sole or dual nitrogen sources rather than from a standard split application of prilled urea”
t0“Rice”
Title
K. G. Cassman; S. K. de Datta; S. T. Amarante; et al. Experimental Agriculture 1996. doi:10.1017/s0014479700003793
Other claims from this paper (10)
- Intervention effect Green manure and rice straw nitrogen gave lower rice grain yield than split prilled urea.
- Intervention effect Green manure and rice straw nitrogen gave lower apparent nitrogen uptake than split prilled urea.
- Intervention effect Green manure or rice straw increased residual soil organic carbon relative to prilled urea.
- Intervention effect Green manure or rice straw increased residual soil total nitrogen relative to prilled urea.
- Intervention effect Green manure or rice straw left greater extractable soil nitrogen during vegetative growth than prilled urea.
- Intervention effect Prior nitrogen source had no residual effect on rice nitrogen accumulation rate after panicle initiation.
- Observation Final rice grain yields were similar regardless of prior nitrogen source.
- Observation Rice straw nitrogen combined with prilled urea had efficiency comparable to green manure nitrogen.
- Observation Rice straw increased soil nitrogen 50–150% more than green manure.
- Recommendation The authors consider straw recycling more promising than green manure for reducing fertilizer nitrogen requirements.