Claim · model-written summary
For collards, estimated maximum net return was $15,561 ha⁻¹ at -9.3 kPa and 394 kg N ha⁻¹.
- Taxon
- collards
Brassica oleracea var. viridise0 - Outcome
- net returne1
- Value
- $15,561 ha⁻¹e1
- Qualifier
- -9.3 kPae1
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For collards”
e1“Maximum net return was estimated to be $15,561 ha⁻¹ at -9.3 kPa and 394 kg N ha⁻¹”
Title
Julio Rodríguez-Casas UA Campus Repository (The University of Arizona) 1994
Other claims from this paper (16)
- Association Spinach and collard midrib NO3-N concentrations responded strongly to N rates throughout the growing season.
- Association Leaf lettuce midrib NO3-N was responsive to treatments at the beginning and end of its growing season.
- Intervention effect Irrigation treatments significantly affected some yield and efficiency parameters, with an effect generally negative.
- Association Nitrogen had a tremendous influence on yield and efficiency parameters.
- Observation For leaf lettuce, maximum fresh weight was estimated at 60861 kg ha⁻¹ at -4.3 kPa soil water potential and 367 kg N ha⁻¹.
- Observation For leaf lettuce, maximum net return was estimated at $18,089 ha⁻¹ when average soil water potential was -6.0 kPa and applied N was 355 kg N ha⁻¹.
- Observation For leaf lettuce, estimated maximum nitrogen use efficiency was 0.8 at -10.3 kPa soil water potential and 2 kg N ha⁻¹.
- Observation For leaf lettuce, a maximum applied water use efficiency could not be determined.
- Observation For spinach, estimated maximum yield was 33948 kg ha⁻¹ at -8.0 kPa soil water potential and 400 kg N ha⁻¹.
- Observation For spinach, estimated net return was $18,573 ha⁻¹ when soil water potential and applied N rate were -8.2 kPa and 398 kg N ha⁻¹.
- Observation For spinach, estimated maximum nitrogen use efficiency was 0.7 at -11.2 kPa and -42 kg N ha⁻¹.
- Observation For spinach, a maximum applied water use efficiency could not be determined.
- Observation For collards, estimated maximum yield was 49466 kg ha-1 when soil water potential was -9.0 kPa and applied N was 396 kg N ha⁻¹.
- Observation For collards, a maximum applied water use efficiency or nitrogen use efficiency could not be determined.
- Association The relationship between midrib NO₃-N concentrations and chlorophyll meter readings was poor.
- Observation Prediction of plant NO₃-N status from chlorophyll meter readings was not as reliable as expected.