help with deficiency diagnosis

[StevOrganic]

My autoflower black jack herer is showing deficiency of some sort in the last week it is now day 50. Can someone tell me what this is I was thimking magnesium and about 6 days ago made Epsom salt solution and sprayed the plant especially under the leaves any help would be greatly appreciated.

Also there is no sign of stunted growth it has gone from 50cm to 60cm in the last few day

 

[Beerhunter CDN]

My autoflower black jack herer is showing deficiency of some sort in the last week it is now day 50. Can someone tell me what this is I was thimking magnesium and about 6 days ago made Epsom salt solution and sprayed the plant especially under the leaves any help would be greatly appreciated.

Also there is no sign of stunted growth it has gone from 50cm to 60cm in the last few day

We need a little more information as some deficiencies or excess nute problems can look similar. What kind of medium are you growing in? Nutrients added? PH of nutes? Concentration of nutes? Temperatures/Humidity?

 

[MissUniverse]

Head on over to the infirmary to get help with this https://autoflower.net/forums/forums/autoflower-infirmary-for-sick-plants.90/

 

[StevOrganic]

Hi my grow is in a 15l airpot I used BioBizz light mix soil and didn’t add nutrients until week 4. The nutrients used are organic from BioBizz range. I didn’t have to water the plant so much as the temps were not very high for the first month of growing which also caused the plant to have a slow start the temps were between 10-20 degrees Celsius and the last couple weeks between 15 and 30 degrees celcius. Humidity quite low as I am in ireland the plant is being kept at the door of greenhouse that is left wide open.

The water I was using for them was ph 6.0 from an alkaline water machine which does not remove minerals from water and I suspect that over time the soil may have possibly become acidic so just 4 days ago I put some powdered lime like dolomite on the surface of soil and gave it a good flushing with tap water which is about ph 7.0 in my area. Since this the symptoms have not got worst and just the couple of leaves that were effected at first have stayed pretty much the same

Also at the first sign of the yellowing and browing at the edges of the leaves a couple weeks ago I mixed up some Epsom salts in water and foliar sprayed the plant

Feeding 1 (1/4 dose at start)

0.5ml biogrow

0.5ml bioheaven


Feeding 2


0.5ml biogrow

0.5ml bioheaven


Feeding 3


1.0ml biogrow

1.0ml bioheaven

0.5ml alga mic


Feeding 4 (this is the mix I fed plant when adding the lime and ph 7.0 water and symptoms have not advanced)


1.0ml bio grow

1.0ml bio heaven

0.5ml alga mic

0.5ml biobloom

0.5 ml topmax

The pictures below are 3 days after the flush with ph 7 water and nutrients

Thanks I’m advance for the help

 

[Rev. Green Genes]

sounds like you fixed it up nicely. the damaged leaves will not recover, you can pluck them out like an eyebrow and know for sure if new symptoms appear. Good work, pH is everything.

 

[StevOrganic]

Do you see the large fan leaves towards the bottom of the plant that’s are fairly pale between the veins is this an issue? all the growth at the top of the plant is green is it normal at day 53 of an Autoflower to be like this? My mother is looking after the plant for me and I am just relaying information to her unfortunately I can’t see plant much only every week or so fingers crossed she’ll flower ok

Also thanks very much for the help

 

[Boognelson87]

@Autoireland I run bio bizz grow and bloom nutrients. Lately i been doing something like this. This all i use since i use earthworm casting tea and some organic ammendments for microbial and micronutrients. But those amounts you are feeding seem low. I just feed mine today 7.5 ml of bio bloom. Week one im giving 1ml then at week 6 i give them a 5ml dose of grow and bloom then after that its just bloom nutrients (i am running quick indicas) Watch for potassium deficiency with biobizz. Its good to get the fish mix since its higher P but i dont have it yet so twice during rhe grow i sneak in some fox farms tiger bloom to help that since my plants i noticed were lacking and now that ive increased they are doing well. Heres a couple photos from.today using bio bizz. The afghan has been flushing for a bit thats why shes yellowing. Getting chopped tomorroe probably. Then purple is the fastbuds fastberry and other is 24 carat
All different ages. Perpetual. I got a journal if you decide to check into it. Still new myself and no expert but i am really liking the biobizz so far

 

[StevOrganic]

Thanks for your reply. I just didn’t want to go overboard with nutes it’s my first time grow do you think it would be any harm to bump up the nutrients now? There is about 3 weeks left until harvest Im guessing could I double or triple the last dose do you think it would do the plant good was thinking maybe 2ml bloom and topmax?

@Autoireland I run bio bizz grow and bloom nutrients. Lately i been doing something like this. This all i use since i use earthworm casting tea and some organic ammendments for microbial and micronutrients. But those amounts you are feeding seem low. I just feed mine today 7.5 ml of bio bloom. Week one im giving 1ml then at week 6 i give them a 5ml dose of grow and bloom then after that its just bloom nutrients (i am running quick indicas) Watch for potassium deficiency with biobizz. Its good to get the fish mix since its higher P but i dont have it yet so twice during rhe grow i sneak in some fox farms tiger bloom to help that since my plants i noticed were lacking and now that ive increased they are doing well. Heres a couple photos from.today using bio bizz. The afghan has been flushing for a bit thats why shes yellowing. Getting chopped tomorroe probably. Then purple is the fastbuds fastberry and other is 24 carat
All different ages. Perpetual. I got a journal if you decide to check into it. Still new myself and no expert but i am really liking the biobizz so far

hnak

 

[Boognelson87]

I woukd go hevay this last feed with bloom nutrients. Being organic nutrients they are very gentle. Id hit em this last week before 2 week flush with a little more bloom for sure.

 

[Boognelson87]

Also, If the picture above is current you definitely got more than 3 weeks to go til harvest. Prolly more so of the 5 week range. Alot of development there based off photos. Then again, they didnt get fed much. Can you get a close up photo of the buds? A microscope is a good investment if yoy dont have one. If you decide to make a grow journal on here ill gladly tag along.