Claim · model-written summary
One third of urea N at panicle initiation was insufficient without incorporated residues.
- Taxon
- Rice
Oryza sativat0 - Treatment
- application of only one‐third of the total urea‐N at panicle initiatione0
- Outcome
- N requirements of ricee0
- Direction
- insufficiente0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice”
e0“When no plant residues were incorporated (WFF), the application of only one‐third of the total urea‐N at panicle initiation was insufficient to meet the N requirements of rice.”
Title
Fallow and Sesbania Effects on Response of Transplanted Lowland Rice to Urea
R. J. Buresh; D. P. Garrity; E. G. Castillo; et al. Agronomy Journal 1993. doi:10.2134/agronj1993.00021962008500040005x
Other claims from this paper (13)
- Intervention effect WF reduced added-N efficiency for dry matter accumulation relative to WFF.
- Intervention effect SR reduced added-N efficiency for dry matter accumulation relative to WFF.
- Observation Rice recovered from an initial adverse effect of incorporated plant residue.
- Intervention effect Rice growth rate after 45 DAT was greater after SR than WFF.
- Intervention effect Rice growth rate after 45 DAT was greater after WF than WFF.
- Intervention effect Without urea, WF increased grain yield over WFF by 0.9 Mg ha ‐1.
- Intervention effect Incorporated weed N substituted for 40 kg urea N per hectare.
- Intervention effect WFF produced lower rice N concentration at 45 DAT.
- Intervention effect Incorporated S. rostrata continued to provide N after 45 DAT.
- Intervention effect Incorporated weeds continued to provide N after 45 DAT.
- Intervention effect Basal urea N failed to increase rice dry weight at 21 DAT.
- Intervention effect Basal urea N failed to increase N concentration at 21 DAT.
- Recommendation Optimal timing of urea application may depend on pretransplant residue incorporation.