First Post of the Season. Got a late start and im in Kansas which experiences 95+ temps this time of year.
Does this look like sun damage or something more serious? I have treated with 3 different anti-fungals and it looks to be spreading.
Looking for help. Have done all kinds of fungicide and insecticide. Leave edges yellow then brown.
Recently changed to drip irrigation with fertilizer injector.
Did soul test. Said I needed N and P add to soil and did foliage application. The center oldest part of the plant continues to die.
I planted late and the dirt plot was a lot of different soil types. Heavy clay so I brought in a lot of composted cow manure and and top soil. We were living in Northern California until mid May so didn’t actually plant until June when we moved back to Kansas.
I also switched to drip irrigation 6 weeks ago. Doing 3 hours a day of watering.
Next year will do a lot more prep work