Mega crop: Is it really an all in one fertilizer?

Stunned

Well-Known Member
Well i don't wanna trust stuff blindly lol i wanna understanding why things work a certain way and the logic behind it
Lots out there about how it performs
Happy reading
Fruity Pebbles Flower day 55.jpg

Day 55 flower MC only
 

InTheShed

Member of the Year: 2018, 2020 - Grow Journal of the Year: 2020 - Member of the Month: Jan 2018, Nov 2018, Jan & Aug 2020 - Grow Journal of the Month: Aug 2018, Dec 2020 - Plant of the Month: Oct 2018, Oct 2021
MegaCrop can be a great one-bag nutrient, as long as you don't run it too hard or find yourself with nitrogen deficiencies that need to be addressed with more MC. The high K and high Ca numbers in it can cause lockouts and toxicity, and we see a lot of growers with burned leaves at the end.

Used with water with a high alkaline content (not a high pH), the fact that it's almost entirely nitrate-based nitrogen can raise the pH of the medium over the life of the grow as well. Something else to watch.

I've run a lot of plants with it over the course of 2½ years and had some great harvests, but it can cause problems as well.

Doesnt weed need more PK during flower? Won't excess N be issue?
Maybe this will help a bit on the phosphorus and nitrogen:

It turns out cannabis plants use a lot less phosphorus than the nute sellers are selling us on.

This is a pdf with plant analysis charts and graphs (with full detailed lab analysis) done on the macro and micronutrients found in three different strains of cannabis plant during veg and flower. It goes along with two videos that @farside05 posted on page 1 of his journal, where the information is explained.

The varieties and analysis are from 2003, but I don't think we have modified the plant in the last 17 years to the extent that the nutrient results would vary that greatly today. Here are screenshots of the first three graphs:


white rhino plant analysis.JPG



hash bud plant analysis.JPG



berlin plant analysis.JPG



What is most interesting, besides the continued need for nitrogen in flower, is how little phosphorus the plants are using compared to nitrogen and potassium.

Hope this helps some!
 

sportyridr

Member
MegaCrop can be a great one-bag nutrient, as long as you don't run it too hard or find yourself with nitrogen deficiencies that need to be addressed with more MC. The high K and high Ca numbers in it can cause lockouts and toxicity, and we see a lot of growers with burned leaves at the end.

Used with water with a high alkaline content (not a high pH), the fact that it's almost entirely nitrate-based nitrogen can raise the pH of the medium over the life of the grow as well. Something else to watch.

I've run a lot of plants with it over the course of 2½ years and had some great harvests, but it can cause problems as well.


Maybe this will help a bit on the phosphorus and nitrogen:

It turns out cannabis plants use a lot less phosphorus than the nute sellers are selling us on.

This is a pdf with plant analysis charts and graphs (with full detailed lab analysis) done on the macro and micronutrients found in three different strains of cannabis plant during veg and flower. It goes along with two videos that @farside05 posted on page 1 of his journal, where the information is explained.

The varieties and analysis are from 2003, but I don't think we have modified the plant in the last 17 years to the extent that the nutrient results would vary that greatly today. Here are screenshots of the first three graphs:


white rhino plant analysis.JPG



hash bud plant analysis.JPG



berlin plant analysis.JPG



What is most interesting, besides the continued need for nitrogen in flower, is how little phosphorus the plants are using compared to nitrogen and potassium.

Hope this helps some!

Thanks for posting this :)
 

BigD13

Well-Known Member
Well i don't wanna trust stuff blindly lol i wanna understanding why things work a certain way and the logic behind it
This should keep ya busy for a while.

 

InTheShed

Member of the Year: 2018, 2020 - Grow Journal of the Year: 2020 - Member of the Month: Jan 2018, Nov 2018, Jan & Aug 2020 - Grow Journal of the Month: Aug 2018, Dec 2020 - Plant of the Month: Oct 2018, Oct 2021
This should keep ya busy for a while.
Just trying to decipher the facts from the nonsense will take the most time. ;)
 

Buds Buddy

Grow Journal of the Month: May 2020
Just so you know.... MC has came out with a version 4 now. Version 3 wasn't as good as version 2 as it needed more Silica for the most part. Version 2 rocked ! 8 oz. or more every plant every time. Haven't had that with Version 3. I just got a bag of Version 4 & will start using it in a few days so we'll see how it does.
 

InTheShed

Member of the Year: 2018, 2020 - Grow Journal of the Year: 2020 - Member of the Month: Jan 2018, Nov 2018, Jan & Aug 2020 - Grow Journal of the Month: Aug 2018, Dec 2020 - Plant of the Month: Oct 2018, Oct 2021

Buds Buddy

Grow Journal of the Month: May 2020
Your v2 looks like it's absorbed a bit of moisture!
Yeah, probably so. Only have 20 - 25 gr. left & been sitting about a year. I use it for the 1 gr. per gal. seedlings.
Have you tried to use the Google Nutrient Calculator lately ? I went to use it the other day & it pretty much said it doesn't exist anymore. Can't find another calculator like that one as of yet.
 

InTheShed

Member of the Year: 2018, 2020 - Grow Journal of the Year: 2020 - Member of the Month: Jan 2018, Nov 2018, Jan & Aug 2020 - Grow Journal of the Month: Aug 2018, Dec 2020 - Plant of the Month: Oct 2018, Oct 2021
I've been using Hydrobuddy lately, but the learning curve was mighty steep for me.
 
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