Growlog link: [paste your link https://growithjane.com/growlog/tangerine-olyg]
Have a issue rapidly getting worse. The spotting has got me puzzled I have attached a link to my grow log
Thanks in advance for your input
I am no expert on deficiencies but that looks like calcium deficiency to me. Hopefully others with more experience will chime in. Do you have any Cal/Mag handy? Or if you are in soil, can you top dress with some fine Dolomite Lime?
I thought Calcium also but every 2 weeks it gets a feeding of calmag
Could also be manganese. Are you giving it a “base” nutrient solution?
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Now that @Outdoorman has mentioned it, it does look like so.
Curious how long this has been going on as it seems too far advanced in stage.
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Are you using liquid nutrients meant for flowering?
If it’s just a general “base” like @Outdoorman mentioned you could be lacking phosphorus.
It looks more like a manganese deficiency but it’s hard to say.
CalMag is great but not a cure-all.
no liquid nutrients from bottle, compost tea and top dressing of bat guano, worm castings.
I’m not sure what is in the tea, but the guano and castings is basically nitrogen. What kind of medium did you use? Even if you used a good potting mix you should have been using light doses of a “base” nutrient which contains everything cannabis needs (i.e. micronutrients). So, it sounds like you have enough of nitrogen which is one component of macronutrients (i.e. NPK). I would start giving a light feeding of “base” along with an NPK of 0-15-15 or any “bloom” nutrient since you are now in the flowering stage. But keep the first number of the equation as low as possible because I think you have enough nitrogen already.
@Draves67 ohhh my mistake.
I’m not sure what the problem is exactly but what I usually do in this type of situation is this:
Flush your soil
Use 3x the amount of either pure or 1/4 strength nutrient water. You will have lots of runoff. After that make one more full strength batch of tea and pour it in.
I’d also recommend making a tea with your worm castings & bat guano. Aerate them in some warm water and let it sit for 48-72hrs. The nutrients are more readily available this way.
Here’s a simple recipe for that:
- Use 1 tablespoon each of bat guano & worm castings per litre of water.
- Use warm water, not hot! You will kill the microorganisms
- Stir the water as you add the guano
- Aerate for 24-72hrs (I do 48hrs myself)
- Check / Adjust pH before use
- Use once per week for lush growth.
Worm castings contain manganese and brewing a tea will make the nutrients more readily available for the plant to use.
The sick parts of your plant will likely stay the same but it should stop the spread.
I had a similar situation when I did not control the ph. I washed the earth until the water at the outlet flowed with a ph of 6.0 -6.5 In my case, the earth was very acidic and blocked the absorption of nutrients. Then I waited for two days until the plant drank water and then began to feed it with ph control. If you control the ph and it is normal, then it is definitely a nutritional deficiency. Look at these pictures, maybe it will help you understand what is missing.
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It appears to me to look like a phosphorus deficiency. Watch this video. Is the description in the video how you saw things happen with your plant?