Claim · model-written summary
Ozone at 20 pphm increased alfalfa water-use efficiency.
- Taxon
- alfalfa
Medicago sativae0 - Treatment
- ozone at 20 pphme0
- Outcome
- water‐use efficiencye0
- Direction
- increasede0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Salinity at all levels or ozone at 20 pphm increased water‐use efficiency of alfalfa”
Title
Salinity‐Ozone Interactive Effects on Alfalfa Yield and Water Relations
G. J. Hoffman; E. V. Maas; S. L. Rawlins Journal of Environmental Quality 1975. doi:10.2134/jeq1975.00472425000400030008x
Other claims from this paper (11)
- Intervention effect At nonsaline conditions, 10 pphm ozone reduced yield by 16%.
- Intervention effect At nonsaline conditions, 15 pphm ozone reduced yield by 26%.
- Intervention effect At nonsaline conditions, 20 pphm ozone reduced yield by 39%.
- Association Increasing salinity reduced the ozone effect on yield.
- Intervention effect Under 20 pphm ozone for two hours daily, alfalfa yielded 25% more at −200 kPa than at −40 kPa.
- Intervention effect Ozone treatments reduced yield in the next cutting through residual effects.
- Intervention effect All salinity levels increased alfalfa water-use efficiency.
- Intervention effect Low ozone concentrations had no effect on water-use efficiency.
- Intervention effect Combined ozone and salinity increased leaf diffusion resistance.
- Intervention effect Ozone alone did not affect leaf diffusion resistance.
- Intervention effect Salinity alone did not affect leaf diffusion resistance.