Help diagnosing what's making my plants decay

[Grove420]

Am trying to figure out what could cause my plants stems to start decaying thinking it is some sort of fungus they are in 5 gallon smart pots (soil) (happy frog) is on majority of plants all affecting almost every branch on the plant will add photos

 

[daTenshi]

This is the first time I have seen anything like this. If the issue is spreading, you may have to look at anti-fungal plant safe products you can use. Sorry I can't be of more help. Try using the search function perhaps there have been others in this situation.

 

[Dusted]

Looks like stem rot to me. I think it is caused by Fusarium sp. I get it every grow. Spray the affected area with a 3500 ppm hydrogen peroxide solution several times a day.

 

[Dusted]

Sorry, I should have included this in the previous post.
This plant pathogen probably arrived with your soil. There are a few ways to reduce the severity of the infection.
First reduce the temperature of your soil if you can. This fungus thrives in warmer temperatures.
Next add some beneficial bacteria/fungi. One of the best is called Great White. Add a few grams of the powdered spores to warm (not hot) water, shake, wait an hour and add to the soil. I have also sprayed this solution onto the stem lesions with success.
Finally make sure the pH of your runoff water is in the correct range.

 

[Pondo7011]

Any Ideas? All help greatly appreciated. 4 weeks into flower. Indoor grow tent. This is one by the door, i do have a heater on tent. coould this be heat stress?

 

[Dusted]

Pondo, this looks like mild K deficiency, due to the combination of purple leaf stem (unless it is a purple strain) and leaf edge mottling. If it is, then it could be from insufficient K in your fertilizer mix. It could also be nutrient lockout due to salt buildup in the growing media or pH out of range. Or I could be wrong entirely. Maybe somebody else will chime in.

 

[legendpenrose]

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[legendpenrose]

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[legendpenrose]

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