Claim · model-written summary
Foliar fertilization did not extend photosynthesis duration.
- Taxon
- soybean
Glycine maxt0 - Treatment
- FFe0
- Outcome
- Pg duratione0
- Direction
- nor did it extende0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Even though nutrient concentrations were increased, FF did not significantly affect yields nor did it extend Pg duration or delay maturity.”
t0“Soybeans”
Title
Effect of Foliar Fertilization on Photosynthesis, Leaf Nutrition, and Yield of Soybeans1
K. J. Boote; R. N. Gallaher; W. K. Robertson; et al. Agronomy Journal 1978. doi:10.2134/agronj1978.00021962007000050022x
Other claims from this paper (14)
- Intervention effect Foliar fertilization increased canopy leaf N concentration from 3.28 to 3.48%.
- Intervention effect Foliar fertilization increased canopy leaf P concentration from 0.24 to 0.29%.
- Intervention effect Foliar fertilization increased canopy leaf K concentration from 0.92 to 1.32%.
- Intervention effect Foliar fertilization significantly increased upper leaf photosynthesis only on two late sample dates.
- Intervention effect Foliar fertilization did not significantly affect seed yield.
- Intervention effect Foliar fertilization did not delay maturity.
- Observation Treated soybean yielded 3617 kg/ha versus 3825 kg/ha in controls.
- Observation Leaf photosynthesis and leaf N and P concentrations decreased through seed filling to maturity.
- Observation Leaf K did not decline during seed filling.
- Association Leaf photosynthesis correlated positively with leaf N.
- Association Leaf photosynthesis approached zero at about 1.75% N.
- Association Maximum leaf photosynthesis was predicted at 4.6 to 6.0% leaf N.
- Association Leaf photosynthesis and leaf P percentage correlated positively.
- Recommendation The authors propose using the leaf photosynthesis–N relationship to model decline during seed filling.