Is this happening on the lower leaves first? If so could be leaf septoria. Comes in many forms. Could be a fungus. Usually lessens harvest weight by a lot too. I would look at that but not 100% sure
Is this happening on the lower leaves first? If so could be leaf septoria. Comes in many forms. Could be a fungus. Usually lessens harvest weight by a lot too. I would look at that but not 100% sure