Claim · model-written summary
Bromide tracer recovery under alternate-row irrigation was twice that under every-row irrigation.
- Taxon
- corn
Zea mays subsp. mayse1 - Treatment
- ARFIe0
- Outcome
- Br recovery valuese0
- Direction
- twofolde0
- Value
- twofolde0
- Comparator
- ERFIe0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Br recovery values under ARFI were twofold of ERFI”
e1“corn field”
Title
Alternate irrigation and fertilization to reduce leaching of nitrates
Francisco Guadalupe Echavarría-Cháirez Lincoln (University of Nebraska) 2000
Other claims from this paper (17)
- Intervention effect Corn yield did not differ between alternate-row and every-row furrow irrigation in 1997 and 1998.
- Observation The recommended nitrogen rate produced 0.2 Mg ha–1 corn grain yield in 1997.
- Intervention effect Both nitrogen rates yielded the same corn grain yield in 1998.
- Mechanism Spatial variation in soil organic matter and drainage explained corn grain yield variation.
- Intervention effect Soil ammonium disappearance was faster under every-row than alternate-row irrigation.
- Intervention effect Corn chlorophyll meter readings were 5% higher under every-row than alternate-row irrigation in 1997.
- Intervention effect Corn chlorophyll meter readings were 2.8% higher under every-row than alternate-row irrigation in 1998.
- Intervention effect Despite higher chlorophyll readings under every-row irrigation, corn yield was unaffected.
- Observation During the growing season, bromide peak movement was 0.15 m under alternate-row irrigation.
- Observation During the growing season, bromide peak movement was 0.60 m under every-row irrigation.
- Observation After harvest bromide moved to 0.60 m under alternate-row irrigation.
- Observation After harvest bromide moved to 1.22 m under every-row irrigation.
- Observation Bromide movement differed by 0.15 to 0.60 m between inflow and outflow positions under every-row irrigation.
- Observation Differences in bromide movement between replicates suggested preferential flow on the west side of the field.
- Method / resource Rendered images corroborated conventional graphics and described bromide distribution.
- Observation Bromide and residual nitrate images had the same spatial distribution.
- Association Soil bromide and nitrate samples collected during the growing season were uncorrelated.