area - smaller leaf area decreases transpiration
orientation - vertically orientated leaves decrease transpiration
surface - waxy, hairy or shiny leaf surfaces decrease transpiration
- when stomata are closed, transpiration decreases
high humidity decreases transpiration
a) low temperature decreases transpiration.
high temperature increases transpiration, but when it gets too hot
the stomata close,
then transpiration may decreases.
a) darkness decreases, because stomata close, (except for CAM plants
open at night).
b) high light intensity increases temperature which increases transpiration,
close then transpiration may decrease; occurs midday during heat of summer.
- as wind increases, transpiration increases, but if the wind
gets too high, then the
stomata close and transpiration decreases
a) when soil is moist, transpiration occurs according to the above
when soil is too dry, stomata close causing transpiration to decrease
the above factors)
USED TO DECREASE TRANSPIRATION
a) in propagation an intermittent mist system is used
b) mid-afternoon sprinkler irrigate plants in greenhouses/nurseries
light intensity - grow plants under shade
a) decrease watering,
b) decrease temperature, or
c) decrease fertilizer, especially N.
- chemicals that close or clog stomata.
a) physiologically cause stomatal closure
resin or latex that clogs stomata