Claim · model-written summary
The authors considered 15N recovery better for fertilizer behavior and actual nitrogen supply.
SorghumNot reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the former better describes fertilizer behavior and actual supply of N”
t0“sorghum”
Title
Nitrogen release from a 15N‐labeled compost in a sorghum growth experiment
Lorenzo Barbanti; Marco Grigatti; Claudio Ciavatta Journal of Plant Nutrition and Soil Science 2011. doi:10.1002/jpln.200900364
Other claims from this paper (15)
- Intervention effect Compost increased mid-growth sorghum dry biomass by 200% compared with unfertilized plants.
- Intervention effect The compost biomass advantage declined to 70% by season end.
- Observation Fertilized and unfertilized sorghum had different sigmoid growth patterns over time.
- Observation Plant tissue nitrogen concentration followed a shared dilution curve across treatments.
- Observation Apparent soil mineralization reached about 45% of compost nitrogen in pots without plants.
- Observation Apparent nitrogen recovery reached 100% around day 111.
- Observation Apparent nitrogen recovery later declined to about 50%.
- Observation 15N recovery reached about 20% at day 83.
- Observation 15N recovery then declined to 12%.
- Association Apparent and labeled recovery fractions were significantly correlated over time.
- Observation Fertilizer-derived nutrient uptake declined over the growth season.
- Observation Fertilizer-derived nutrient uptake was about 50% early in the season.
- Observation Fertilizer-derived nutrient uptake was about 25% late in the season.
- Mechanism The authors inferred strong sorghum nutrient demand from the disparity between recovery metrics.
- Observation The authors considered apparent recovery useful for overall fertilizer effects on crop nutrition.