Claim · model-written summary
Corn transpiration was not detectably changed by the decrease in effective plant conductance and soil conductivity.
- Taxon
- corn
Zea mays subsp. mayse1 - Treatment
- decrease in effective plant conductance and soil conductivitye2
- Outcome
- Transpiratione2
- Direction
- not detectably changede2
Verbatim
e1“The variation of leaf water potential at different heights in a corn crop canopy ( Zea mays ) and with time during a period of increasing drought stress were examined along with soil moisture tension and evapotranspiration”
e2“Transpiration was not detectably changed by the decrease in effective plant conductance and soil conductivity”
Title
Photosynthesis Under Field Conditions. XI. Soil‐Plant‐Water Relations During Drought Stress in Corn1
J. H. Shinn; E. R. Lemon Agronomy Journal 1968. doi:10.2134/agronj1968.00021962006000040002x
Other claims from this paper (8)
- Association Upper corn leaves had higher water potentials with a bimodal tendency on clear summer days, while lower leaves had lower and almost constant water potentials.
- Association On high stress days the maximum afternoon leaf water potential of corn increased by an amount equal to the increase in soil moisture tension.
- Association The gradient of water potential from upper corn leaves to soil increased regularly with soil moisture tension on days of comparable evaporative demand.
- Observation Total corn transpiration was not bimodal.
- Mechanism Compensating transpiration by lower corn leaves is inferred to explain the absence of midday closure effects in upper leaves.
- Association Growth processes of corn slowed down with increasing leaf water potential and decreasing tissue turgor.
- Observation Growth slowdown of corn was evident at soil moisture tension below one bar and leaf water potential below 3.5 bars.
- Association The calculated effective root length of corn was small compared with Slatyer (1957), but the computational error is large.