martinweller said:

Guys what do you think about zinc level in nutrients?

Zinc and Cannabis Potency: The Optimal Nutrient Level That Maximizes Cannabinoids

New peer-reviewed research reveals the precise zinc level that maximizes THC, CBD and cannabinoid production in cannabis — and why too little or too much both hurt potency. Essential reading for serious growers.

thecannex.com

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I didn't read the article. I clicked the link for the study and got the PDF. Then I fed that to Gemini and asked it for a summary. The study basically says too little and too much is bad, use just enough. It's the same for every other micronutrient. It placed a lot of emphasis on maintaining 6.0 pH which is important in hydro.

Regarding the concentration in my nutrients that's what I pay the manufacturer to do. Using GH micro for 25 years and never had a problem.

Are you worried your plants are not getting enough zinc, or are you trying to unlock the secret sauce?

Grownsince95 said:

I didn't read the article. I clicked the link for the study and got the PDF. Then I fed that to Gemini and asked it for a summary. The study basically says too little and too much is bad, use just enough. It's the same for every other micronutrient. It placed a lot of emphasis on maintaining 6.0 pH which is important in hydro.

Regarding the concentration in my nutrients that's what I pay the manufacturer to do. Using GH micro for 25 years and never had a problem.

Are you worried your plants are not getting enough zinc, or are you trying to unlock the secret sauce?

Click to expand...

Secret sauce for sure.

i would focus on calcium magnesium and nitrogen

looked at my nutrient it has 0.3 mg/L using the standard mix
wow since when can ai draw text

martinweller said:

Secret sauce for sure.

Click to expand...

In hydro or soil?

Poor zinc uptake will miniaturize the plant. I wouldn't worry about specifically supplementing zinc, I'd make sure it's included in a good balanced micronute supplementation. I have Flora Micro on hand. I'm lucky if I break it out more than once a grow, and usually just getting a little bit in there for the stretch. Most good feeding products have nice balanced micros already in there.

Mostly, mentioning Zinc made me think of this.

Zinc is real, I just wouldn’t treat it like a throttle for potency. The study is useful because it shows the curve, too little hurts growth and cannabinoid expression, and too much can push the wrong direction. But that was a controlled fertigation setup. In a normal grow the bigger lever is whether pH and the base micro package keep Zn available.

That Masterblend chart at 0.3 ppm is basically sitting right on the low end of the range they tested as best, so I wouldn’t add zinc on top of that unless the plant is showing deficiency or your water/feed math says you’re actually short. Zinc deficiency usually shows as tight, stunted new growth and interveinal chlorosis on the newer leaves, not just “buds could be stronger.” In soil especially it gets tangled up with high pH, excess phosphorus, and root health, so adding a zinc product can miss the real problem and throw off the other micros.

My take is zinc is one of those elements you want present and available, not chased. Balanced micros, sane pH, no overdoing P, healthy roots. If those are right, I’d spend more effort on cultivar, light, dry/cure, and keeping the plant unstressed before trying to fine tune Zn by tenths of a ppm.