Claim · model-written summary
At 7 to 17 kPa and 60 to 315 kg applied N ha −1, calculated drainage nitrate concentration remained below 10 mg NO − 3 ‐N L −1.
- Taxon
- watermelon
Citrullus lanatuse1 - Outcome
- NO 3 − ‐N concentration in soil water draining below the root zonee0
- Direction
- limitinge0
- Value
- <10 mg NO − 3 ‐N L −1e0
- Qualifier
- 7 to 17 kPa tension and 60 to 315 kg applied N ha −1e0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“7 to 17 kPa tension and 60 to 315 kg applied N ha −1 would result in yield and net return of >95% of the calculated maxima of marketable yield and net return, while limiting calculated NO 3 − ‐N concentration in soil water draining below the root zone to <10 mg NO − 3 ‐N L −1 .”
e1“watermelon [ Citrullus lanatus (Thumb.) Matsum. & Nakai]”
Title
J. W. Pier; T. A. Doerge Journal of Environmental Quality 1995. doi:10.2134/jeq1995.00472425002400010011x
Other claims from this paper (7)
- Observation Predicted maximum watermelon marketable yield was 102 Mg ha −1 at 7.2 kPa and 336 kg N ha −1.
- Observation Predicted maximum net return was $10 819 ha −1 at 10.2 kPa and 256 kg applied N ha −1.
- Observation Predicted maximum unaccounted fertilizer nitrogen was 300 kg N ha −1 at 4 kPa and 500 kg applied N ha −1.
- Observation The combined response was optimal at 12.6 kPa and 178 kg N ha −1.
- Observation The combined response stayed within 95% of maximum across 10 to 16 kPa and 60 to 300 kg applied N ha −1.
- Observation At 7 to 17 kPa and 60 to 315 kg applied N ha −1, predicted yield and net return exceeded 95% of their maxima.
- Method / resource Data normalization and spatial analysis were useful for concurrent evaluation of watermelon production criteria.