Wetting Agent Polymers

These are used to help a soil profile retain water by attracting water molecules onto soil particles, subsequently reducing soil water repellency.

  Wilting Coefficient

The percentage of water content of a soil where a plant will not recover from the lack of available water unless additional water is added to the soil to aid recovery: At this stage a plant will be at wilting point because the soil cannot supply any water, which is held at about -15 bar, to the plant. If additional water is not supplied to the soil, or if the plant cannot become effectively dormant for a period until adequate water is available, then permanent wilting point will be reached and no matter how much additional water is then added to the soil, the plants imminent death is certain.

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