Claim · model-written summary
Differences in bromide movement between replicates suggested preferential flow on the west side of the field.
- Taxon
- corn
Zea mays subsp. mayse1
- Outcome
- preferential flowe0
- Setting
- west side of the fielde0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Differences in Br – movement between replications suggested preferential flow in the west side of the field”
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.
- Intervention effect Bromide tracer recovery under alternate-row irrigation was twice that under every-row irrigation.
- 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.
- 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.