Claim · model-written summary
Plant-need-based chlorophyll meter management reduced rice N requirement by 12.5 to 25% without yield loss.
- Taxon
- rice
Oryza sativae0 - Treatment
- plant need–based N management through chlorophyll metere0
- Outcome
- N requirement of ricee0
- Direction
- reducese0
- Value
- 12.5 to 25%e0
- Qualifier
- with no loss in yielde0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results show that plant need–based N management through chlorophyll meter reduces N requirement of rice from 12.5 to 25%, with no loss in yield.”
Title
Bijay Singh; Yadvinder Singh; Jagdish K. Ladha; et al. Agronomy Journal 2002. doi:10.2134/agronj2002.8210
Other claims from this paper (6)
- Intervention effect SPAD-triggered 90 kg N ha −1 produced rice yields equivalent to the 120 kg N ha −1 split application.
- Intervention effect SPAD threshold 35 led to only 60 kg N ha −1 and low yields in two rice cultivars.
- Intervention effect Basal or one-week-post-transplant N did not further increase rice yield on high-fertility soil.
- Intervention effect LCC shade 4 management helped avoid overapplication of N to rice.
- Intervention effect Wheat responded to N at maximum tillering when SPAD fell below 44.
- Intervention effect Applying 30 kg N ha −1 at SPAD 42 at maximum tillering increased wheat yield by 20%.