How does humidity affect vegetation?

As plants transpire, the humidity around saturates leaves with water vapor. When relative humidity levels are too high or there is a lack of air circulation, a plant cannot make water evaporate (part of the transpiration process) or draw nutrients from the soil.Click to see full answer. In this way, is high humidity good for plants?High levels of humidity decrease the amount of water lost by a plant through transpiration (aka the evaporation of water from a plant’s leaves), and low levels of humidity increase the amount of water lost through transpiration.Beside above, how does humidity affect an ecosystem? It increases with temperature and decreases with altitude (because cooler air is drier). Its main influence on terrestrial life is it’s influence on precipitation and dew formation on water availability and the resulting effects on convection and evaporation of organisms. Similarly one may ask, how does humidity affect transpiration? Relative humidity: As the relative humidity of the air surrounding the plant rises the transpiration rate falls. It is easier for water to evaporate into dryer air than into more saturated air. Wind and air movement: Increased movement of the air around a plant will result in a higher transpiration rate.How does humidity affect agricultural production?High air humidity favors many plant diseases and insect pests. It increases the growth of shoots and leaves at the expense of yield of crops. RH together with air temperature and the solar radiation intensity, affects the rate at which water is evaporated from the leaves of the plants.