FarmerBones
Active Member
I am at a loss to identify my stem problem. 1 plant affected of 19. Only time I've seen something similar is with tomatoes having Alternaria Stem Cankers in my fields. The fungi on the tomato stems were not a problem concerning spread and sometimes I'd be successful using fungicides containing Mancozeb but the plants had fruit stunting. Explanation of where it came from was best determined as seeds that came from less than ideal disinfection techniques from the supplier. BUT, we are talking Cannabis not tomatoes and most of what read about Alternaria and Cannabis relates to black dots on leaves (none on leaves, only wilting you see from the picture). I have been growing since the 60's and have never seen this before. I can't say for sure it is a fungus so I'm putting this out for some feedback to what it might be. Maybe it's common and I've just been lucky for all these years not seeing it. Anyway, some minimum details:
Climate controlled room on front range of Colorado, with temperatures held between 65 and 78 degrees, humidity at 50%. PH levels kept at proven levels. It is a hydroponic drip system using 6x6 inch rock wool grow blocks in leech trays. Utilizing General Hydroponics as a nutrient brand feeding twice weekly. 18/6 light schedule with 4 680w ROIs. Germination of autoflower seeds, Indica, pictures from week 3 after transplant to blocks. At least 11 successful crops using my setup over the years.
Climate controlled room on front range of Colorado, with temperatures held between 65 and 78 degrees, humidity at 50%. PH levels kept at proven levels. It is a hydroponic drip system using 6x6 inch rock wool grow blocks in leech trays. Utilizing General Hydroponics as a nutrient brand feeding twice weekly. 18/6 light schedule with 4 680w ROIs. Germination of autoflower seeds, Indica, pictures from week 3 after transplant to blocks. At least 11 successful crops using my setup over the years.
