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Report on the Effect of Air Movement on Plants Transpiration Rates


This report involves an investigation of the impact of air motion on plant transpiration rates. The experiment aims to determine whether air movement influences Transpiration and how it affects plant energy loss. Plant cuttings will be exposed to controlled wind conditions, simulating natural air movement. The study hypothesizes that increased air movement will elevate transpiration rates due to the removal of the saturated air layer around leaves. The results will provide insights into the relationship between wind, Transpiration, and plant physiology, contributing to a better understanding of plant-water interactions and agricultural practices.


High winds, according to the ecological literature, result in high rates of Transpiration and hence severe water stress. (Singh & Giri, 2021). This is expected to compensate for a variety of events, including the wind shape of trees and the agricultural advantage of the shelter. Nonetheless, using the Penman-Monteith equation (Li & Rong, 2022), a number of academics have disproved this viewpoint. At least two studies have revealed experimentally that wind lowers Transpiration under numerous usual conditions (Zhang & Cornelissen, 2021). According to some reports, the influence of wind on plants is affected by stomatal behavior; stomata may close in reaction to the shock of wind treatment or even open more broadly (Fanourakis & Tsaniklidis, 2020). Other authors have revealed that air movement causes stomatal or cuticular damage, which could result in higher water loss rates (Maylani & Wardhana, 2020).

The primary objective of this report is to investigate the influence of air movement, specifically wind conditions, on the transpiration rates of plants. By examining how wind impacts the energy exchange and transpiration process in leaves, this study aims to uncover the intricate relationship between air movement and the removal of the saturated air layer from leaf surfaces, thereby affecting the overall rate of Transpiration. Through controlled experimentation involving a low-speed fan simulating wind, the report seeks to determine whether increased air movement enhances plant transpiration rates while considering the potential impact of temperature changes on the observed outcomes.


The experiment was conducted to measure the rate of Transpiration in plant cuttings under different conditions. To set up the apparatus, utility clamps and a ring stand were positioned in accordance with the provided illustration. Plastic tubing with a 2-way valve on one end and no connector on the other was prepared. A marker was used to mark 1 cm below the white plastic connector, and water was drawn using a syringe, which was then attached to the open end of the tubing. By pushing the syringe’s plunger, water was introduced into the tubing, and the 2-way valve was sealed to eliminate air bubbles. The tubing was then shaped into a U shape, and a tubing clamp was inserted. A plant cutting with a stem of equal or larger diameter than the tubing was selected and cut at a 45° angle. The plant was then attached to plastic tubing, ensuring the 2-way valve remained open, and the stem was immersed in water.

Following these preparations, the experimental apparatus was put in a temperature and humidity-controlled environment. To imitate wind blowing, a low-speed fan was turned on. The Graphical Analysis App was set up on a computer and linked to the Go Direct Pressure Sensor. The data-collecting mode was activated, and the starting point was set at the water level in the tubing. To achieve reliable measurements, air bubbles were eliminated during the data collection.

Data was collected while the rate of water uptake by the plant cutting was being monitored. Based on the obtained data, the rate of Transpiration was determined at the end of the experiment. The methods used in this study contributed to a better understanding of plant-water interactions and their environmental implications.

experiment to measure the rate of Transpiration in plant cuttings under different conditions


For three experiments with varied fan speeds, transpiration rates were recorded in kilopascals per minute (kPa/Min). Based on the three experiments, the average rate of Transpiration was estimated for each fan speed. The results show that transpiration rates vary with fan speed, implying that air movement has an effect on the plant’s water loss process.

Fan Speed Rate of Transpiration (kPa/Min)


Average rate of Transpiration (kPa/min)
Trial 1 * Trial 2 * Trial 3*
Control -0.0015938 -0.02381 -0.01445 -0.0132846
Fan on low -0.006532 -0.2332 -0.01892 -0.08621733
Fan on high -0.01293 -0.01183 -0.01715 -0.01397


The study of the influence of fan speed on transpiration rates has provided fascinating insights into the dynamics of water loss in plants under varied air movement circumstances. Table 1 shows that there are considerable changes in transpiration rates across different fan speeds, validating the hypothesis that air movement is important in the transpiration process.

Given the absence of external air movement, the observed decrease in the control group’s average rate of Transpiration (-0.0132846 kPa/min) is consistent with predictions. As a starting point, this emphasizes the necessity of air movement in facilitating Transpiration. The fan-on-low setting showed a significant reduction in the average rate of Transpiration (-0.08621733 kPa/min), demonstrating that a mild breeze can have a significant influence on minimizing water loss. Interestingly, the fan-on-high scenario had an average rate of Transpiration similar to the control group (-0.01397 kPa/min), suggesting that there may be a point beyond which greater air movement does not provide substantial benefits in terms of Transpiration.

These findings give information on the interaction between air movement and Transpiration in the context of the larger experiment’s objectives. The experiment was designed to imitate natural wind conditions, and the findings highlight the importance of air movement in supporting effective Transpiration. Understanding this link is critical for agricultural practices and ecosystem management since it helps to optimize water consumption and plant health.

Several improvements and opportunities for future research may be explored to improve our understanding of Transpiration. First, broadening the range of fan speeds might offer a more thorough view of the point at which increased air movement no longer influences transpiration rates. Furthermore, studying the Effect of various plant species, leaf shapes, and sizes on Transpiration under changing airflow conditions might give useful insights into plant-specific responses.

Furthermore, combining real-time temperature and humidity measurements with fan speed might shed light on the delicate interdependencies that influence transpiration rates. Additionally, investigating the impacts of intermittent airflow patterns and different exposure periods might provide a more comprehensive knowledge of plant responses to changing conditions.

In conclusion, the experiment effectively proved the relationship between fan speed and transpiration rates, emphasizing the role of air movement in aiding plant water loss. The findings highlight the complexities of plant-water interactions and lay the foundations for future research targeted at optimizing agricultural practices and ecosystem management. We may continue to explore the complicated mechanisms driving Transpiration and its larger ecological implications through these recommended adjustments and future research endeavors.


Singh, A. P., Mani, B., & Giri, J. (2021). OsJAZ9 is involved in water-deficit stress tolerance by regulating leaf width and stomatal density in rice. Plant Physiology and Biochemistry162, 161-170.

Li, Y., Qin, Y., & Rong, P. (2022). Evolution of potential evapotranspiration and its sensitivity to climate change based on the Thornthwaite, Hargreaves, and Penman–Monteith equation in environmentally sensitive areas of China. Atmospheric Research273, 106178.

Zhang, S., Liu, G., Cui, Q., Huang, Z., Ye, X., & Cornelissen, J. H. (2021). New field wind manipulation methodology reveals adaptive responses of steppe plants to increased and reduced wind speed. Plant methods17(1), 1-16.

Fanourakis, D., Aliniaeifard, S., Sellin, A., Giday, H., Körner, O., Nejad, A. R., … & Tsaniklidis, G. (2020). Stomatal behavior following mid-or long-term exposure to high relative air humidity: A review. Plant Physiology and Biochemistry153, 92-105.

Maylani, E. D., Yuniati, R., & Wardhana, W. (2020, July). The Effect of leaf surface character on the ability of water hyacinth, Eichhornia crassipes (Mart.) Solms. to transpire water. In IOP Conference Series: Materials Science and Engineering (Vol. 902, No. 1, p. 012070). IOP Publishing.


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