Claim · model-written summary
N rates above 70 kg N ha−1 led to forage nitrate concentration above 3000 mg kg−1.
- Treatment
- N rates beyond 70 kg N ha−1e0
- Outcome
- forage nitrate concentrationse0
- Direction
- greater thane0
- Value
- 3000 mg kg−1e0
- Comparator
- safe limite0
SorghumNot reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N rates beyond 70 kg N ha−1 resulted in forage nitrate concentrations greater than safe limit of 3000 mg kg−1”
t0“sorghum”
Title
Nitrogen application effects on forage sorghum production and nitrate concentration
Johnathon D. Holman; Augustine K. Obour; David B. Mengel Journal of Plant Nutrition 2019. doi:10.1080/01904167.2019.1659321
Other claims from this paper (8)
- Association Sorghum dry matter yield had a quadratic relationship with N rate across site-years.
- Intervention effect Maximum dry matter yield was 6530 kg ha−1 at 100 kg N ha−1.
- Observation The economic optimum N rate ranged from 55 to 70 kg N ha−1 depending on costs and hay price.
- Intervention effect Crude protein concentration increased with N fertilizer application.
- Intervention effect Nitrogen uptake increased with N fertilizer application.
- Association Nitrogen use efficiency decreased with increasing N fertilizer rates.
- Association N recovery decreased with increasing N fertilizer rates.
- Recommendation The authors recommend 55–70 kg N ha−1 for economic dry matter yield with safe nitrate concentration.