Claim · model-written summary
In the first season, 40 cm tillage increased rice N uptake by 16–18 kg ha −1 relative to 15 or 25 cm.
- Taxon
- rice
Oryza sativae0 - Treatment
- tillage to a depth of 40 cme0
- Outcome
- rice N uptakee0
- Direction
- highere0
- Value
- 16–18 kg ha −1e0
- Comparator
- 15 or 25 cme0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mineral N availability in the 0‐ to 45‐cm profile and rice N uptake in the first season were significantly higher (20–25 kg ha −1 higher mineral N and 16–18 kg ha −1 higher crop N uptake) with tillage to a depth of 40 cm than to 15 or 25 cm”
Title
Tillage Depth Influence on Soil Nitrogen Distribution and Availability in a Rice Lowland
D. K. Kundu; J. K. Ladha; E. Lapitan‐de Guzman Soil Science Society of America Journal 1996. doi:10.2136/sssaj1996.03615995006000040028x
Other claims from this paper (7)
- Intervention effect In the first season, 40 cm tillage increased soil mineral N availability by 20–25 kg ha −1 relative to 15 or 25 cm.
- Intervention effect In the following seasons, 40 cm tillage produced the highest subsoil mineral N.
- Intervention effect In the following seasons, 40 cm tillage raised rice N uptake by 12 to 14 kg ha −1 relative to 15 cm.
- Observation The increased nitrogen supply originated largely from the 15 to 30 cm layer.
- Mechanism The authors attributed deep tillage benefits partly to removal of mechanical impediment to root proliferation.
- Mechanism The authors attributed deep tillage benefits partly to lower subsoil N loss susceptibility.
- Intervention effect One 40 cm tillage every three seasons had no adverse effect on soil N fertility.