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29/06/2021 - 00:00
The hydroabsorbant polymers in the TerraCottem mixtures were chosen for, amongst other things, their ability to absorb, retain and ultimately make water available to plant roots. The hydrogels contained in TerraCottem have absorption tensions which allow plant roots to pick up the water on demand.
|Hydro absorbant polymers or hydrogels make up between 31 and 39,50 % of TerraCottem universal, arbor and turf.|
The rest consist of:
|Read more: The best kept secret|
The relationship between the water content in the soil and the “force” with which the water is retained can be plotted into a graph: the water retention curve (pF-curve) or soil moisture characteristic.
For further details, please check out our blog article:
The higher a soil amendment’s water retention capacity, the more plant available water?
To summarize the above-mentioned article, soil water can be divided into 3 volumes, depending on the force with which it is held by the soil matrix:
The plant available water varies according to soil texture and can be increased by adding TerraCottem soil conditioners.
Independent analyses done at the University of Ghent, Belgium confirm that the polymers incorporated into the TerraCottem soil conditioners make more than 95% of the water retained by the polymers is plant available. This means that the water is absorbed with a force greater than gravity (limiting water losses to the subsoil) yet lower than wilting point, allowing plant roots to pick up the water on demand.
|Therefore, the hydro absorbent polymers contained in the TerraCottem soil conditioners do not take away water from the plant. On the contrary, they put water at plants’ disposal, helping plants withstand drought stress better.|