I am growing seedlings for the first time. I have noticed something strange at the base of the stalks. It is whiteish. It appears to be numerous small growths packed together. It occurs in two bunchs on opposite sides of the stem. They look like little tiny coccons. They are hard to the touch. They are not confined to pepper plants but appear on some other species. They also do not appear on all the plants on a small minority. The affected plants appear fine and seem completly healthy. Does anyone have any ideas what this could be and what I can do about it. Thanks, Kevin