My kales became flaccid and wilted after rains pounded three weeks consequently. I attributed this to leaching, carbon dioxide poisoning or plasmolysis.
I suspect through seepage my plot of land acquired high water hardness hence becoming more concentrated than my kales vacuole sap. In medium that has a higher solute concentration than the cell sap, water will diffuse out of the cell. This condition is called plasmolysis and causes the cell to become flaccid. If the factor causing plamolysisis removed fast enough or remedied, the cells gain turgidity with no apparent damage. However, continued plasmolysis willcause death of cells ultimately whole plant like my kales.