Dear gardeners,
I need some help to identify a problem of a few seedlings that I have.
I am growing some black locust (robinia pseudoacacia) seedlings from seed. Currently they are about 3-4 weeks old. They are planted in a coconut choir that is enriched with fertilizer and vermiculite mixture (50:50). I water them daily very small amounts. I had 3 of them and then one of them fell over. After inspecting I found that the stem at the soil level was damaged. It looked as if it was chewed off. Here is the image of what I recovered:
After inspecting the other two I found similar but smaller wounds on the stems. Here is the seeding with bigger wound:
What could have caused this?
