I grew teosinte and corn in the greenhouse, CU at Boulder, and got a
Recently, I found necrosis at the base of leaf of teosinte and corn.
Does any have any thought about this problem.
I post a picture on Picasea. Please look at it and give me some
suggestion. Thanks in advance.
1. Growing in 4-gallon plastic pot
2. Dirt- Fafard Canadian Growing Mix-2
3. Fertilizer: Hoagland's solution
4. Pesticide: spray to treat mite and aphid
5. Elevation: 5430 feet