Hello, I do not know what is the exact & main reason behind this. Look at the stem, roots & leaves. That seedling was growing very slowly & wilting leaves. Moreover yellowing or browning & drying of leaf tips & edges. Kindly tell me the possible causes of its death. Waiting for your reply, Thanking you in anticipation.
It looks like a rooting problem related to the soil that is unable to support healthy root development.