Fundamental Physiological Processes II. Transpiration and Translocation

The transpiration and translocation are fundamental physiological processes.

Transpiration is the loss of water in the form of vapour through the leaves; it is difficult to distinguish this process from transpiration. evaporation of the soil, so the whole phenomenon is called the evapotranspirationThis water is directed by a moisture gradient, from the lower wetter zone (below 5.5 cm) to the shallower zone (first 5.5 cm). This transpired water allows the plant to cool down, but in situations of high relative humidities or high values of VWC This temperature gradient does not occur, meaning that the plant is not cooled and the “canopy temperature” – or foliar temperature – rises considerably, even if the outside temperature remains unchanged. This is why we measure the foliar temperature, so that we can assess the level of thermal stress of our greens.

Translocation is the movement of compounds from outside to inside the turf, and movement within its system. Thus, when we apply iron Once it has been taken up by the leaves, it is transported to the molecules of chlorophyll, and the result is the greenish discolouration of our greens.

Transpiration and translocation processes are at their best when the air/water balances are correct. Likewise, excessive VWC or high relative humidity during periods of high temperatures increase the thermal stress of our greens due to the impossibility of the transpiration process.

Studies conducted by Stevens reveal that the 85% of the VWC and the VWC measures ECThe first 6 cm of the profile of the green, which is why this is the priority area to monitor.