Claim · model-written summary
Nitrogen uptake peaked at 60 kg N ha − 1.
Not reportedTaxonMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Verbatim
e0“Nitrogen uptake, N agronomic and N recovery efficiencies peaked at 60 kg N ha − 1”
Title
Benedicta Essel; Robert Clement Abaidoo; Andrews Opoku; et al. Journal of soil science and plant nutrition 2020. doi:10.1007/s42729-020-00240-y
Other claims from this paper (7)
- Intervention effect A nitrogen rate of 60 kg ha −1 gave the best grain yield of 5 t ha − 1 across phosphorus and potassium levels.
- Intervention effect Nitrogen agronomic and recovery efficiencies peaked at 60 kg N ha − 1.
- Association Nitrogen partial factor productivity declined as nitrogen application increased.
- Observation Cost to grain price ratios were 1.29, 1.65 and 1.65 for N, P and K, respectively.
- Observation Economically optimal nitrogen was 61 kg ha −1, 32% below the recommended 90 kg N ha −1.
- Observation Nitrogen application had the lowest cost to grain price ratio and was economically more profitable than P and K.
- Recommendation The authors recommend applying 61 kg N ha −1 to maize rather than higher rates for profitability.