possibly charged with nutrients and/or plants pharmaceuticals,
and mixed to the soil in proximity of the plant roots.
When the cultivation is watered (by either irrigation or rain),
the hydrogel absorbs and retains the water, thus avoiding a
rapid water loss due to evaporation and drainage. As the soil
dries, the hydrogel releases the stored water in a sustained
manner through a diffusion mechanism, keeping the soil
or the substrate humid over quite long periods of time. A
further advantage in mixing the hydrogel with the soil is
that hydrogel granules (which in the dry form have almost
the same dimensions of the substrate granules) increase their
size after swelling, thus increasing soil porosity and providing
a better oxygenation to the plant roots, as schematized i
possibly charged with nutrients and/or plants pharmaceuticals,and mixed to the soil in proximity of the plant roots.When the cultivation is watered (by either irrigation or rain),the hydrogel absorbs and retains the water, thus avoiding arapid water loss due to evaporation and drainage. As the soildries, the hydrogel releases the stored water in a sustainedmanner through a diffusion mechanism, keeping the soilor the substrate humid over quite long periods of time. Afurther advantage in mixing the hydrogel with the soil isthat hydrogel granules (which in the dry form have almostthe same dimensions of the substrate granules) increase theirsize after swelling, thus increasing soil porosity and providinga better oxygenation to the plant roots, as schematized i
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