First time coco grow yellow blotches

FatBoyVik

FatBoyVik

Well-Known Member
Hey gents,

I'm doing my first coco grow and I'm having some issues with yellowing on the leaf and I think maybe stunted growth.

I have been using canna coco nutrients and I have used RO water with 200ppm of calmag added at the start and ha e been watering this week about 1.2 ec of feed phed at 5.7-5.8.

From the pictures can anybody tell me what the proper course of action would be?

I am thinking to flush with low dose cal mag and foliar spray calmag later in the week.

Any input appreciated!
 

Attachments

  • 20240221_210345.jpg
    20240221_210345.jpg
    5.9 MB · Views: 51
  • 20240221_210334.jpg
    20240221_210334.jpg
    1.8 MB · Views: 55
  • 20240221_210339.jpg
    20240221_210339.jpg
    1.1 MB · Views: 55
  • 20240221_210345.jpg
    20240221_210345.jpg
    5.9 MB · Views: 56
  • 20240221_210326.jpg
    20240221_210326.jpg
    1.1 MB · Views: 55
  • 20240221_210324.jpg
    20240221_210324.jpg
    880.8 KB · Views: 48
Well it was once a day but recently twice a day. About 500ml so I get alot of run off. They are in 3 litre air pots which they have been in for 3 days now from 1 litre air pots.
 
It looks like some sort of nutrient deficiency. Flushing will only make the problem worse. Raise your A&B EC by 0.1 and you should be fine
 
OK so just more food simple enough! I'll raise the EC like you suggested and stick to two meals per day.

Any opinions on foliar feeding to correct the deficiency?

Thanks for helping guys I'll report back soon.
 
FatBoyVik said:
OK so just more food simple enough! I'll raise the EC like you suggested and stick to two meals per day.

Any opinions on foliar feeding to correct the deficiency?

Thanks for helping guys I'll report back soon.
Click to expand...
I think raising the EC by 0.1 should do the trick. I wouldn't bother foliar feeding to try and correct it bongsmilie
 
Also I've never grown in coco but I hear it likes to bind to cal-mag and potentially make it unavailable to the plant.

EDIT: And if this is actually the cause, a foliar treatment might work best. Smarter people than me might want to chime in.
 
Last edited:
What they are looking like now fellas.
 

Attachments

  • 20240223_124918.jpg
    20240223_124918.jpg
    2.9 MB · Views: 15
  • 20240223_104449.jpg
    20240223_104449.jpg
    5.4 MB · Views: 15
  • 20240223_104445.jpg
    20240223_104445.jpg
    2.8 MB · Views: 14
  • 20240223_104442.jpg
    20240223_104442.jpg
    2.7 MB · Views: 12
FatBoyVik said:
I'll try and see what happens buddy thank you
Click to expand...
Ya if the 1.2e included the cal mag and half of that (300ppm) is calmag it will mess with your ratios and would probably lead to a mag deficiency.

I fed 8ml of a+b during veg. gives you right around 100ppm of cal. Just feed at a higher rate and cut the cal mag down considerably

1708707841945.png
 
MannyPacs said:
Ya if the 1.2e included the cal mag and half of that (300ppm) is calmag it will mess with your ratios and would probably lead to a mag deficiency.

I fed 8ml of a+b during veg. gives you right around 100ppm of cal. Just feed at a higher rate and cut the cal mag down considerably

View attachment 5372654
Click to expand...

Cheers for that, it sure does make me understand the complexities of nutrient availability.. I will Lower the Cal mag as you said and up the feed so the total comes to around 1.4-1.5 ec.

Also you said you add 8ml of A and B what about of water is this mixed to?
 
You must log in or register to reply here.
Back
Top