Threat of Nutrient Burn to Cannabis Plants

Threat of Nutrient Burn to Cannabis Plants

Threat of Nutrient Burn to Cannabis Plants

Professor DeBacco

Most Growers Over Fertilize Their Plants
Nutrient burn is typically a grower induced error when they do not properly calculate the nutrients needed by the plant.
Also, growers typically think more fertilizer can fix a wide range of problems when it actually can cause more.

Avoiding Nutrient Toxicity
Follow manufacturers recommendations
Know the pH values and concentrations of your nutrient solutions
Favor on the low side and work to higher concentrations after you see how the plant react

Recognize Deficiencies
Knowing what certain deficiencies look like will help you ensure you can correct problems early on.

Know Your Fertilizers
Many fertilizers have a blend of N-P-K so do not make application for one nutrient without considering the others.
Meaning if you calculate the amount of fertilizer to add for 120ppm of N do not forget about the P and the K as this could lead to an over application.

Have Specialty Fertilizers
It may be a good idea to have some fertilizers that are nutrient specific to ensure as a grower you can dial-in a fertilizer program if there is a deficiency noticed.
This is recommended at least for Nitrogen and Calcium/Magnesium.

Know Fertilizers Compatibility
Some fertilizers can be mixed, other will have reduced solubility and others are simply incompatible.

Test your mix before adding it to your plants.

Link to Lecture Slides:

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  1. C.J. MacKay on May 16, 2022 at 4:40 pm

    Enjoying your videos today and taking lots of notes. Thank you for these

  2. KING FISH / PHILL on May 16, 2022 at 4:42 pm

    Very good information , allways feed less than recommended on nutrients amounts , and you will not have nutrients burn 😉

  3. dalan wanbdiska on May 16, 2022 at 5:02 pm

    Im 10 years into growing and now know start quarter strength and work way up to full strength. I just use half strength on autos.

  4. Jessie Jimenez on May 16, 2022 at 5:17 pm

    This year 2021. I ignored
    Peoples Thoughts on adding nutrients during flowering or vegetation stage I even stopped PHM all I did was prepare my area with the compost that’s produced here locally I grew 11ft girls with no added nutrients but the compost I started with never had no deficiencies I tried this as my own little experiment and my plants produced a few pounds apiece just compost and non-P aged water the secret is in the soil you got the right soil or compost and my plants strived all summer long. And when I talk about compost I don’t talk about grass clippings food leftovers this compost comes from dairy cows it is in rolls a water it and turn it daily

  5. Jesus ™ on May 16, 2022 at 5:20 pm

    I use AN 3 part in a continual harvest, I always feed the plants less than the product recommends, otherwise I get problems