• Home
  • Forums
  • Medical Cannabis Cultivation
  • Cannabis Infirmary
  • Is this a cal-mag deficiency?

Is this a cal-mag deficiency?

  • Thread starter Thread starter RobbysPro
  • Start date Start date May 4, 2020
  • Tagged users Tagged users None

Is this a cal-mag deficiency?

RobbysPro May 4, 2020 4 Replies 1,039 Views
Page 1 of 1 · Replies 1–5 of 5
1

RobbysPro

Posts
11
Joined
Feb 14, 2020
Points
1
May 4, 2020
#1
I’m currently on day 19 of flower growing white widow. When I went to grab soil they were all out of ffof and I ended up getting fox farm strawberry fields which I’ve never used before. I did just finish a mendo breath run in the same soil with no issues though. I’ve been feeding dechlorinated tap water with ff big bloom. All these spots started showing up about a week ago along with leaves yellowing. Anyone seen this before?
 

Attachments

  • is-this-a-cal-mag-deficiency.jpeg
    690.4 KB · Views: 113
  • is-this-a-cal-mag-deficiency-2.jpeg
    427.4 KB · Views: 78
  • is-this-a-cal-mag-deficiency-3.jpeg
    719.2 KB · Views: 77
  • is-this-a-cal-mag-deficiency-4.jpeg
    360 KB · Views: 72
  • is-this-a-cal-mag-deficiency-5.jpeg
    386 KB · Views: 78
Quote Reply

revfunk

Supporter
Posts
879
Reactions
1,383
Joined
Jun 22, 2008
Points
143
May 4, 2020
#2
rust explained.

--------------------------------------------------------------------------------

rust, how many of you have had this and been beaten by it? lots i bet!!!
first, rust is a fungi. it is opportunist. it preys on unwell plants. if something is a miss, rust is a sign. rust has been identified to have 7,000 species. it attacks crops of every description. but we're only interested in one variety arn't we?
if rust is present early in a grow, you have problems as it's an indicator something in your room is a miss. usually ventilation. go through your system and double check things are in place and working properly.
rust is an air borne fungi. if given the opportunity, it WILL take hold. it usually does during flower as this is when the plants immune system is at its weakest as its energies are concentrating on re-production, not survival.
depending on what part of the grow you get it, you can cure/minimize it with either chemical or natural remedies.
it enters the leaf via the stomata and then it's off and running.
fungacides used are generally copper based and include; thriram, manzecob, maneb or zineb at 10 day intervills.
organic;
baking soda, 1 tea spoon/ quart of water. spray on.
copper sulphate, read lables.
fungacidal soap sprays;
garlic sprays, 1/2 cup minced garlic, 1 quart of water. let sit 24hrs, strain, spray.
sulphur, one of the best natural sprays. it is low in toxicity.
micro kill, a citric based killer. i use this with great success

Hope that helps somehow lol
 
Reactions: drcannabis.io and RobbysPro
Quote Reply

RobbysPro

Posts
11
Joined
Feb 14, 2020
Points
1
May 4, 2020
#3
bubblefunk said:
rust explained.

--------------------------------------------------------------------------------

rust, how many of you have had this and been beaten by it? lots i bet!!!
first, rust is a fungi. it is opportunist. it preys on unwell plants. if something is a miss, rust is a sign. rust has been identified to have 7,000 species. it attacks crops of every description. but we're only interested in one variety arn't we?
if rust is present early in a grow, you have problems as it's an indicator something in your room is a miss. usually ventilation. go through your system and double check things are in place and working properly.
rust is an air borne fungi. if given the opportunity, it WILL take hold. it usually does during flower as this is when the plants immune system is at its weakest as its energies are concentrating on re-production, not survival.
depending on what part of the grow you get it, you can cure/minimize it with either chemical or natural remedies.
it enters the leaf via the stomata and then it's off and running.
fungacides used are generally copper based and include; thriram, manzecob, maneb or zineb at 10 day intervills.
organic;
baking soda, 1 tea spoon/ quart of water. spray on.
copper sulphate, read lables.
fungacidal soap sprays;
garlic sprays, 1/2 cup minced garlic, 1 quart of water. let sit 24hrs, strain, spray.
sulphur, one of the best natural sprays. it is low in toxicity.
micro kill, a citric based killer. i use this with great success

Hope that helps somehow lol
Click to expand...
Not exactly what I wanted to hear but that definitely helps lol thank you!
 
Quote Reply

revfunk

Supporter
Posts
879
Reactions
1,383
Joined
Jun 22, 2008
Points
143
May 4, 2020
#4
RobbysPro said:
Not exactly what I wanted to hear but that definitely helps lol thank you!
Click to expand...

Cheers!
 
Quote Reply

drcannabis.io

Posts
10
Reactions
11
Joined
Mar 28, 2020
Points
3
May 5, 2020
#5
There is definitely some yellowing going on. If bubblefunk is right and the rust coloring is a fungi, "it is opportunist. it preys on unwell plants" I don't know if the yellowing may come from the fungi as well, so I'd also check pH, something may be going on there.
Magnesium is after all a most important element and the lack of it could be weakening the plant.
 
Quote Reply
Page 1 of 1 · Replies 1–5 of 5
1

Thread info

Replies 4
Views 1,039
Started May 4, 2020
Latest post May 5, 2020
Starter RobbysPro
Forum Cannabis Infirmary

Latest posts

  • Tumble stumbles upon a Spider Farmer clip on fan.. Growing Blue Cheese, North Thunderfuck, Cali Blues, and Bruce Banner #2
    • Latest: Tumbleweed375
    • 5 minutes ago
    Grow Diaries
  • Let's See Your Frostiest Flowers
    • Latest: GNick55
    • 54 minutes ago
    Cannabis Photography
  • O
    Greeeeetinggs!
    • Latest: o7Panda
    • Today at 8:19 PM
    Introduce Yourself
  • how to Bubble washing and tips 2024
    • Latest: Bigalmoby
    • Today at 8:08 PM
    Concentrates & Processing
  • Cpurola's Outdoor grow in Southeast Michigan 2026
    • Latest: Bigalmoby
    • Today at 8:04 PM
    General Outdoor Growing
  • Home
  • Forums
  • Medical Cannabis Cultivation
  • Cannabis Infirmary
  • Is this a cal-mag deficiency?
  • Contact us
  • Terms and rules
  • Privacy policy
  • Help
  • Home
Community platform by XenForo® © 2010-2026 XenForo Ltd.
Menu
Log in

Sign up

  • Home
  • News
  • Classifieds
  • Forums
    • What's new Featured content New posts New Articles New articles New products Latest activity
  • Social
  • Strains
  • Live
  • Learn
  • Brands
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?