Since cultivation (maximum three plants) has been legal in Germany, I hope that many novice growers will find your channel and learn how to work properly with fertilizers. I am also such a noob and had to restart my first cultivation due to over-fertilization. I was therefore extremely careful with fertilizers when I started again and it didn't take long for the first deficiencies to appear. But now I can effectively combat the deficiencies thanks to your videos. Both videos (you're five year old regarding nutrient deficiencies and this one) have been saved, will be shared regularly and I look forward to learning from your content in the future. You are doing a great job and I, as well as thousands of others, am super grateful to you for providing us with such valuable material free. Best regards from Germany!
I just found your channel and all your video's are amazing. The first one I saw was one from 3 years ago talking about genetics and plant morphology which was interesting to hear about. I'm gonna watch all the vids and sub so keep up the good work.
You are an absolute legend my friend! Appreciate all your knowledge and hard work with the plant.hall of fame🏆🫶been watching for years.much love from the uk🤙🫶💚🫡✌️
I love it when my TH-cam guys cross pollinate like this. Matt DeBacco is a deep well of critical horticultural info, and Shane is the only guy actually testing these lights for us. 👍🏼👍🏼
Thanks a lot for your job. Its insane that we concentrate so much on improving electronics and there is not much work on plants. Keep it up you will get so much views with time .
Amazing video. very helpful. One Suggestion: This Video would profit greatly from having chapters so viewers can jump back and forth between them. Especially when comparing different deficiencies between each other or with other plants. Please consider adding those youtube chapters to this video and to potential new videos where applicable.
That is so interesting and helpful and really hard to keep watching while trying to look "hard at work". I should watch this in my free time... Thank you 🙂
I have spent most evenings during last two weeks researching this information, and comparing inconclusive photos and descriptions. This guide is great, as here we can see the whole plant. Thank you very much! It would be fantastic to see a guide with other foliar symptoms as well, like light/heat stress, over/under watering, reveging, maybe also early sex definition? Great content. Thank you very much.
Really good examples of various deficiencies. Could you go into how toxic levels of nutrients can appear as deficiencies of others? Also, I'm interested in knowing which amendments provide answers to the deficiencies you addressed.
Remove alternating five fingered leaves. Use an oil lamp to produce CO2. Add a quarter teaspoon of vinegar per gallon of municipal treated water as it has been limed and has a pH of 9.1 or so; the vinegar reduces it to 7 pH. Use Yellow flypaper to control gnats.
Is there somewhere that I can buy a book with all the visual references that you use in showing plant deficiencies. I would love to find a book with many photos showing each deficiency and explanation for in the grow room reference
Great Video!~ I keep super informative useful videos saved to my playlist for reference. A hard science to explain but so necessary to be successful with Cannabis!
@@DeBaccoUniversity I will be conducting a study between Rooted Leaf and other products. You'll be the firs to know the results. I just have anecdotal evidence. You not a fan?
Very informative! :) Thank you I think you should add with the Ca Mg and S fertelizer numbers that everyone has a different tap-water with different levels of Ca and Mg. So if you blindly follow those instructions you could over-fertelize.
7:14 Thanks for the good explanation! Just a question, I’ve always been said that calcium deficiency starts with yellow dot that turns rusty on the UPPER leaves, since calcium is immobile. In the video you say to look at the lower fan leaves first… please clarify this point. Thanks 7:14
7:59 sorry, not 7:14. You say calcium deficiency symptoms start on the lower fan leaves. Why? I knew I should look for calcium deficiency rusty spots in the upper leaves
Nice breakdown. These leaf signs are pretty eye-opening. Got me thinking about my garden - bet this applies to more than just cannabis. Might have to look into how other plants show deficiencies. Really useful info for any grower.
Great episode! 2 questions, for sulfur deficiency could epsom salt (magnesium sulfate) be used as a treatment since it is a sulfate? Also, can you please do a video on Phytoplasma and its affects on the plant? I saw an outdoor plant this year with abnormal purple coloring very early in flower and discovered it was phytoplasma. The worst branches were removed, others seem to outgrow the issue, and some branches were noticeably reduced yield in the end compared to others on the same plant.
I suggest you have broad mites, not phytoplasma. The youtube channel "Nitrogrower" has a very informative video on the subject, simply called "broad mites", one of the only sources I've ever been able to find that matches the bizzare purple discoloration and stunted growth I see in my garden. Check it out and see if it looks similar to yours.
@muffinman3052 I watched that video and it was interesting to see his broad mite damage. The purple discoloration looked very different from what I saw this year. The purple discoloration I saw originated mostly from the very interior of the immature budsite formation and spread outwards on those flowers and started affecting more budsites further down the infected branches as the weeks progressed. It was significant amounts of purple discoloration on the affected branches while the rest of the plant was completely normal and lush green. I also saw leaf hoppers attacking the plants this year. I applied dr zymes on multiple occasions through the growing cycle to eliminate all pests and broad mites should not have survived the dosage rates that I was using prior to and during early flower formation. But I will admit I never used my microscope and checked for any bugs that small so I can't confirm those mites were 100% not there. Thank you again for the video recommendation!
Hi, Could you help please, I’m new to growing plants and want to grow auto’s in coco using a brand called yellow bottle nutrients. If you type in google yellow bottle nutrients deluxe feeding schedule i have all of those bottles. Am i suppose to follow that exact schedule and dosages for autos.? What would you do.? Thanks
You can start by following the label or maybe 1/2 the suggested amounts as it is easier to work up to higher amounts then run the risk of burning the plants.
When I mix my soil and coconut mix, I always add a tablespoon (heaped) of rock flour. When the plant is in flowering phase, I sprinkle this rock flour on the soil again and work it into the top layer of soil. I also have flower fertilizer and (phosphorus-potassium plus) as a liquid fertilizer, as well as a bottle of Celulase, which I use every time I water. Do you think this sounds good at first, or is there a certain potential risk for the plant and therefore the harvest?
@@DeBaccoUniversity I don't think so with dolomite rock dust. It should contain all the important nutrients (except nitrogen) that the plant needs. But it would be interesting to see how the pH value behaves, since it is alkaline, and how long it takes for the plant to absorb it.
@SammyB-83 yeah have just stripped my grow tent and sprayed everything with alcohol and neem oil every 3 days for a fortnight. Chucked out my fabric pots and bought air pots instead. Fingers crossed got two Purple Kush seeds in and 2 Juicy Zkittlez to go in in 4 weeks for a staggered crop.
Debacco for president
Or head of the DEA at least!! 😜
Got my vote
why? POTUS doesn't even run the country, they're just puppets 🥴🥴🥴
Tobacco university, is too much copy paste talk, and even showing wrong pictures etc.. remember bro has zero experience growing
@Avation911 I've been growing for years and these videos have helped me pull some big plants. Text book knowledge helps
Excellent video Professor DeBacco. Thank you for the great explanation.
Happy to help!
Since cultivation (maximum three plants) has been legal in Germany, I hope that many novice growers will find your channel and learn how to work properly with fertilizers. I am also such a noob and had to restart my first cultivation due to over-fertilization.
I was therefore extremely careful with fertilizers when I started again and it didn't take long for the first deficiencies to appear.
But now I can effectively combat the deficiencies thanks to your videos.
Both videos (you're five year old regarding nutrient deficiencies and this one) have been saved, will be shared regularly and I look forward to learning from your content in the future. You are doing a great job and I, as well as thousands of others, am super grateful to you for providing us with such valuable material free.
Best regards from Germany!
All learning by doing
Thanks to Germany!
Viel Glück beim Grow, hoffe es gelingt dir. :)
Welcome to the family!
Cheers from California
💚🌞🌱🔥🧬🌿😶🌫️💨💨💨
Thumbs up even before I watched it! Your videos are allways top notch!
Thanks for the comment and subscription!
incredible
Excellent work and detailed best ever .
Thank you so much 😀
Very good information and understandable
👍5 ⭐⭐⭐⭐⭐ schooling 👍
Thanks for the 5-star rating!
@DeBaccoUniversity Your Welcome
Great information 🎉
Great comment.
Great channel... Very informative..
Thank you
No distracts or gimmicks, just good learning.
That is the goal here.
Great video thanks... very informative i appreciate it
You are welcome!
I just found your channel and all your video's are amazing. The first one I saw was one from 3 years ago talking about genetics and plant morphology which was interesting to hear about. I'm gonna watch all the vids and sub so keep up the good work.
Thanks for the subscription and comment, be sure to share the channel with others!
Totalmente excelente. Thank you!
You are welcome!
my favorite videos, pure science and straight to the point.
That is the goal of the channel!
top 👌
Thanks!
Great video! Very helpful information.
Glad to help!
Overview Nutrient Mobility 1:54
Nitrogen deficiency: 2:40
Nitrogen deficiency correction: 3:41
Phosphorus defiency 5:19
Phosphorus defiency correction: 6:09
Potassium deficiency: 6:54
Potassium deficiency correction: 7:20
Calcium deficiency: 7:58
Calcium deficiency correction: 8:46
Magnesium deficiency: 9:20
Magnesium deficiency correction: 9:58
Manganese deficiency: 10:57
Magnesium deficiency correction: 11:26
Sulfur deficiency: 13:00
Iron deficiency: 13:28
Iron deficiency correction: 14:02
Summary deficiency symptoms: 14:40
Thanks for this!
This is the most comprehensive vid on the subject. Tx professor
You are welcome be sure to share the channel with others!
You are an absolute legend my friend! Appreciate all your knowledge and hard work with the plant.hall of fame🏆🫶been watching for years.much love from the uk🤙🫶💚🫡✌️
Much appreciated UK!
Glad your back
Happy to be back.
Very verry good report Matt. Man haven't seen much from you lately, but everytime it's solid gold
Always working on something;-)
@DeBaccoUniversity
Much love from Down Under brother. Enjoy the angling 🎣
Thank you Prof DeBacco!!!
You are welcome!
Great ❤
Thanks!
Thank you Professor!
You are welcome!
Great job Professor 👍
Thanks a lot from Germany ✌️
nice 💚
Thanks!
I love it when my TH-cam guys cross pollinate like this. Matt DeBacco is a deep well of critical horticultural info, and Shane is the only guy actually testing these lights for us. 👍🏼👍🏼
Always nice to have a collaboration!
Thanks professor 🙏
You are welcome!
Thank you Professor DeBacco!!👍
You are welcome!
you are a wizard and a gem,
thank you for your service!
Thanks for your subscription!
Thank you so much for spreading the best information available. As always. Much love from Germany 💚
Glad to help and share the channel with others!
Love your channel dude!
Thanks for the subscription!
Hey buddy, I love all your content. It’s amazing. Very interesting. I learned a lot.
Thanks for sharing!
Great video 👍🏼
Great comment!
Yes, love these, thank you!!
Oh man, this one is so good at summarizing the describing the deficiency's
Great to know thanks for the comment.
Would love to work with you in any way, even as an intern. Learning so much with this channel.
Maybe one day!
Greets from Germany.. You help people a lot right now
Great to know, please share the channel with others as well!
Thanks a lot for your job. Its insane that we concentrate so much on improving electronics and there is not much work on plants. Keep it up you will get so much views with time .
Thanks for this positive comment.
thanks professor!
You are welcome!
this is the most usefull video i have ever seen!
thank you
Thanks for this comment, be sure to share it with others!
thank you for this, new sub from me!
Thanks for the subscription!
Amazing video. very helpful.
One Suggestion:
This Video would profit greatly from having chapters so viewers can jump back and forth between them. Especially when comparing different deficiencies between each other or with other plants. Please consider adding those youtube chapters to this video and to potential new videos where applicable.
Thanks for the suggestion, typically TH-cam auto-generates these chapters.
Thank you Sir
Most welcome.
Very clear and precise!
Glad it was helpful!
thank u very much!
You are welcome!
Much love from TNB subbed up amazing info🎉🎉🎉❤
Thanks for the subscription!
Great video Professor! Go UConn
Thanks!
thx
Welcome!
pure Gold content... thank u a lot 4 ur work
You are welcome and thanks for the comment and subscription.
Thanks for your informative videos! This ine is VERY important!
Thanks for watching.
Dear professor, please do a video about the visual clues of a ph imbalance!
Until Matt replies. Check his catalogue.
This is harder to show, but is something a grower should be checking.
That is so interesting and helpful and really hard to keep watching while trying to look "hard at work". I should watch this in my free time...
Thank you 🙂
You are welcome!
🇬🇧 thanks for the great information 😊❤
Thanks for the comment!
Very informative, THANK YOU for what you do. It has helped me in the past and I am sure your videos will help in the future. Thanks again.
Glad to help!
Thank you very kindly for your as always excellent work. Stay safe and healthy 🫵🏻😘👍🏼
Glad to hear you like the work produced.
Thanks for more real information!!
That is the goal of this channel!
I really appreciate your videos! I think for many new growers the topic nutrient lockout would be extremely interesting. Thank you.
I appreciate your subscription!
I have spent most evenings during last two weeks researching this information, and comparing inconclusive photos and descriptions.
This guide is great, as here we can see the whole plant. Thank you very much!
It would be fantastic to see a guide with other foliar symptoms as well, like light/heat stress, over/under watering, reveging, maybe also early sex definition?
Great content. Thank you very much.
Your detailed comment is appreciated!
@@DeBaccoUniversity A video covering the typical reveg issues would be greatly appreciated 👍
Finally, an up-to-date detailed analysis of plant deficiencies. Thank you!!!!!
Goal is to provide current content.
Thank you for another masterclass.
Thanks for attending!
Really good examples of various deficiencies. Could you go into how toxic levels of nutrients can appear as deficiencies of others? Also, I'm interested in knowing which amendments provide answers to the deficiencies you addressed.
This is harder to show and the goal is to avoid this as a grower.
Always great
Thanks!
didático e preciso. interessante a diferença da deficiencia em nitrogenio e sulfato ser na parte central da folha.
Que bom que você achou as informações úteis.
Invaluable information
Thanks for the solid Guide.
Glad you enjoyed it!
These videos are great. Thank you for sharing your knowledge and time.
Happy to help!
Remove alternating five fingered leaves. Use an oil lamp to produce CO2. Add a quarter teaspoon of vinegar per gallon of municipal treated water as it has been limed and has a pH of 9.1 or so; the vinegar reduces it to 7 pH. Use Yellow flypaper to control gnats.
Goal is pH of 7, but local water values may differ so good to check your starting values.
Thank you soooo much!! 💚🙏
Welcome!
for the algorithm! 💪🏻
Much appreciated.
Simply the best!
Great video for those of us that have a low tolerance for hype and bull.
Thank you 🙌 blessed 2025
Thank you
Welcome!
Thank you for sharing priceless info …also does this cover toxicity …in the case where I add to much?…great vids looking forward to more
Toxicity can look different.
Thanks alot. Very helpful in a compact video
You are welcome!
I could use that once a week from now on !
Glad to help.
Great video!! Love all your content and videos!! Keep up the good work! Cheers from ohio!
Thanks Ohio!
Is there somewhere that I can buy a book with all the visual references that you use in showing plant deficiencies. I would love to find a book with many photos showing each deficiency and explanation for in the grow room reference
See description for original sources.
Great Video!~ I keep super informative useful videos saved to my playlist for reference. A hard science to explain but so necessary to be successful with Cannabis!
That is the goal of this channel.
👍🏿💯
Thanks!
Best book purchase in my life was the George Cerventes indoor growing bible
That can be another useful resource.
Rooted Leaf is a better Cal Mag. Great content as always! Thanks.
Do you have comparison data?
@@DeBaccoUniversity I will be conducting a study between Rooted Leaf and other products. You'll be the firs to know the results. I just have anecdotal evidence. You not a fan?
Good products from a great dude🤌
bro thx
Welcome!
Very informative! :) Thank you
I think you should add with the Ca Mg and S fertelizer numbers that everyone has a different tap-water with different levels of Ca and Mg. So if you blindly follow those instructions you could over-fertelize.
Key is to take notes and make adjustments to fit your conditions.
thank you so much man ! .
You're welcome!
7:14 Thanks for the good explanation! Just a question, I’ve always been said that calcium deficiency starts with yellow dot that turns rusty on the UPPER leaves, since calcium is immobile. In the video you say to look at the lower fan leaves first… please clarify this point. Thanks 7:14
Immobile means it get "stuck" in the older leaves and the issue will first be seen in the upper leaves. 7:14 talks about potassium so hope this helps.
7:59 sorry, not 7:14. You say calcium deficiency symptoms start on the lower fan leaves. Why? I knew I should look for calcium deficiency rusty spots in the upper leaves
Debacco 2024
Thanks!
How gypsum can I add to plants? The bag doesn't have a measuring guide.
Nice breakdown. These leaf signs are pretty eye-opening. Got me thinking about my garden - bet this applies to more than just cannabis. Might have to look into how other plants show deficiencies. Really useful info for any grower.
Hope it makes you a better grower.
@4:06 the diagram incorrectly shows as ‘nitrates vs nitrates’ instead of ‘nitrates vs nitrite’.
Description has sources for the images.
Great episode! 2 questions, for sulfur deficiency could epsom salt (magnesium sulfate) be used as a treatment since it is a sulfate? Also, can you please do a video on Phytoplasma and its affects on the plant? I saw an outdoor plant this year with abnormal purple coloring very early in flower and discovered it was phytoplasma. The worst branches were removed, others seem to outgrow the issue, and some branches were noticeably reduced yield in the end compared to others on the same plant.
I suggest you have broad mites, not phytoplasma. The youtube channel "Nitrogrower" has a very informative video on the subject, simply called "broad mites", one of the only sources I've ever been able to find that matches the bizzare purple discoloration and stunted growth I see in my garden. Check it out and see if it looks similar to yours.
Thank you for that info! I'll look into it!
@muffinman3052 I watched that video and it was interesting to see his broad mite damage. The purple discoloration looked very different from what I saw this year. The purple discoloration I saw originated mostly from the very interior of the immature budsite formation and spread outwards on those flowers and started affecting more budsites further down the infected branches as the weeks progressed. It was significant amounts of purple discoloration on the affected branches while the rest of the plant was completely normal and lush green. I also saw leaf hoppers attacking the plants this year. I applied dr zymes on multiple occasions through the growing cycle to eliminate all pests and broad mites should not have survived the dosage rates that I was using prior to and during early flower formation. But I will admit I never used my microscope and checked for any bugs that small so I can't confirm those mites were 100% not there. Thank you again for the video recommendation!
Interesting topic, there is also increased anthocyanin production.
CAN YOU INFORM US OF THE BASE GROW? WHAT NUTES, LIGHTS, WATERING SCHEDUAL, WATER PH ECT?
This can depend on many factors such as substrate and indoors vs outdoors. Look for other videos on the channel for specifics answers for your set-up.
I can't believe I'm 8 minutes late!
Late to class again I see :D
At least you still made it to class.
thank you very much
You are welcome
Are you able to use the wood ash in water and use pH down to adjust?
Not very effective and very messy.
Hi, Could you help please, I’m new to growing plants and want to grow auto’s in coco using a brand called yellow bottle nutrients. If you type in google yellow bottle nutrients deluxe feeding schedule i have all of those bottles. Am i suppose to follow that exact schedule and dosages for autos.? What would you do.? Thanks
You can start by following the label or maybe 1/2 the suggested amounts as it is easier to work up to higher amounts then run the risk of burning the plants.
When I mix my soil and coconut mix, I always add a tablespoon (heaped) of rock flour. When the plant is in flowering phase, I sprinkle this rock flour on the soil again and work it into the top layer of soil. I also have flower fertilizer and (phosphorus-potassium plus) as a liquid fertilizer, as well as a bottle of Celulase, which I use every time I water.
Do you think this sounds good at first, or is there a certain potential risk for the plant and therefore the harvest?
Can rock flower contain heavy metals?
@@DeBaccoUniversity I don't think so with dolomite rock dust. It should contain all the important nutrients (except nitrogen) that the plant needs. But it would be interesting to see how the pH value behaves, since it is alkaline, and how long it takes for the plant to absorb it.
How long to notice improvement from Mg deficiency ? After you've given them a drink of Epsom Salts. Thanks in advance.
Typically 7-10 days.
@@DeBaccoUniversity thanks so much. I only get problems in the 6 week + of flower.
What would cause yellow spots on seedlings in a dwc
Did something drip on the leaves?
I spent 3 crops trying to find out what nutrient deficiencies and finally found it was spider mites all along
They look alike. Have to check ur plants everyday
@SammyB-83 yeah have just stripped my grow tent and sprayed everything with alcohol and neem oil every 3 days for a fortnight. Chucked out my fabric pots and bought air pots instead. Fingers crossed got two Purple Kush seeds in and 2 Juicy Zkittlez to go in in 4 weeks for a staggered crop.
Careful plant inspections are key.
If I mix manure promix hp and fertilized potting mix in my soil and do the two feed Gaia green fertilizer, do I still need any cal mag
Good to have on hand.
What causes leaf taco or canoeing, please?
Many factors which can include insects as well.
❤❤❤❤❤🎉🎉🎉🎉
Much appreciated.
Dear Professor, is there any benefit from crushing female contraception pills and adding it to the water during the flowering stage?
What is the benefit? (Short answer... No.)