Ill Plants Emergency Rescue Needed

[stinger_489]

Hi Guys, i have recently been having problems with this....


they were fine one day...and kinda sad looking the next...i`ve been through the books and come to the conclusion that its a deficiency of some sort..i`ve flushed her through and added some weakened nutes. I just had 6 out of 8 ladies with the same problem. Any suggestions would be appreciated
as i`ve never had this before.

I have a young lady 3 weeks gone she`s small but perfectly formed and is starting to show signs of this problem. I`d really like her to go full term.

The leafs start like this then go if left unchecked to a bronzey/gold colour....and are totally crisp..

 

[Guest]

Somone will answer you but this looking like a cal/mag def or balance problem. Look at mynamestitch or sproutocos posts and check your neuts for balance issues mine looked like this and my ph was up to 7 (SOIL)some epsoma epsom salts helped 11% mag + sulfer to lower ph a little.

 

[stinger_489]

Thanks, should i foliar feed with epsom salts.? or water normally with it..i made a gallon mix up and found the EC to be around the 1.2 mark..Am i ok to foliar feed the girls when they are 3 weeks into flower.?

Thanks for the reply.

 

[Guest]

Really more info is needed. I noticed the leaf stim is redding is this normal for the plant?

 

[stinger_489]

I think the redding is to do with my camera flash. None of the stems seem to be red.

 

[Blackmelo]

that picture is not enough to go by.
Lets see a pic of the whole plant.

How old is it? What soil mix do you have? What are you feeding it? Do you check your ph?

 

[stinger_489]

She`s 4 weeks old and 3 weeks into flower...she is in Bio-biz compost fed with bio-g-power compo nutes...ph is 6.7/8

as for the pic...i`ll have to go get some new batteries

 

[stinger_489]

Ok as requested...the 1st 2 pics are of the poorly lady...




this pic is of her sister at 3 weeks flower


this is her mom at 10 days flower



this is 8 armageddons at day 2 flower



this is 8 white widows at 8 days flower



if your wondering why i`m showing different pics of different plants...all the plants are grown in the same compost...fed the same nutes PH around 6.7/8..all in the same room...temps around 85 deg humidity 50% day and no higher than 62% night time...This is why i`m struggling coming up with an answer

 

[sproutco]

she is in Bio-biz compost fed with bio-g-power compo nutes...ph is 6.7/8

What does ph 6.7/8 mean? Your ph is in this range? Is there dolomite lime in your soil mix? Is there calcium and magnesium in yur bio g power nutes? Looks like your getting alot of tip burn. Are you cutting the burned tips off the plant? :smile: I think this is just a case of too much ferts like phosphorus. Not magnesium deficiency by the look of that leaf first posted.

I highly suggest you do the following and report what you get:

How to figure ppms of your fertilizer solution

http://www.angelfire.com/cantina/fourtwenty/articles/profiles.htm On this page you will find the suggested levels in ppms for mj at different stages of growth. At the bottom of the page is a calculator. Enter net weight of your jug, total ml, ml used per gallon, and % elements like 3% nitrogen. It will give you your ppms of your nutrient solution. Compare to suggested numbers. I think I would start out with using their suggested low end of the range so you dont burn your plants. Experiment. I suggest 4:2:1 ratio of potassium to calcium to magnesium. So if you had 200 ppm potassium, you would want 100 calcium and 50 magnesium. 1/4 teaspoon epsom salts per gallon of water = 30 ppm magnesium and 1/4 teaspoon powdered gypsum per gallon of water = 70 ppm calcium.

 

[stinger_489]

Hi Sproutco, the ph is 6.7 or 6.8 the bio biz compost is by Bio-G-Power and is supposedly PH balanced...the one part feed is also meant to contain all elements needed for growth...as the other pics imply...its seeming to do what is it supposed to do with the exception of this little lady..and yes i`m trimming off the burnt tips..and no i don`t think there is any dolomite lime in the soil...although i could be mistaken..the bag says basically that there is 3 different kinds of sterilised virgin peat and a mix of perlite..i`ve been using this stuff for a while with no obvious probs..the recommended mix for the feed is 2ml per litre...i use a 220 litre tank...i invariably mix it a little weaker so i finish with an EC of 0.9...i then add 200ml of bloom stim and a few drops of superthrive...around week 4or 5 i usually water with a 3/4 strength miracle grow solution just to make sure the 3 main elements are ok. I fully flush twice in the last ten days with Bio g power biozyne. It doesn`t actually say what is in the feed. The miracle grow is N-P-K 15-30-15

 

[sproutco]

Have you used the miracle grow lately? Is this what this plant recieved recently? Does 3/4 strength mg mean 3/4 tablespoon per gallon? There is not net weight and % of the elements on your bottle of ferts?

 

[Laxpunker]

I think I have some of that same Miracle Grow for the legal garden.

T. Nitrogen 15%
5.8% Ammoniacal Nitrogen
9.2% Urea Nitrogen
Available Phosphate 30%
Soluble Potash 15%
Boron .02%
Copper .07%
Iron .15%
Manganese (chelated manganese) .05%
Molybdenum .0005%
Zinc .06%

I'd say you're suffering from a Calcium def at the very least.

 

[stinger_489]

i haven`t used the miracle grow on this lady as she`s only 3 weeks into flower...and no the nutes don`t say what the percentage of ferts are used..it doesn`t say on their web site either..i`ve used the award winning bio g power stuff for over 5 years normally on hydro..this is only my 4th grow on compost..hence the head scratching...the last 3 were fine..although the 1st was a little spindly but skeletor put me right on the watering method there..and that solved that problem...i`m not being lazy Sproutco it genuinely doesn`t tell me the ingredients on the 10ltr container..

 

[stinger_489]

would bone meal ferts solve the calcium deficiency.?

 

[sproutco]

In my signature below are directions on how to test soil ph and ec. Read over that. Since you have an ec meter you should use it to the max. I think the soil is too salty. Too high an ec.

It is possible if your soil mix was ph balanced that it contained dolomite lime to supply calcium and magnesium. You have not repotted in a while so the mix is not new right? Your dolomite lime may be starting to run out. Also, there is often a shortage of cal mag even with it in there. Ideally you should check to see if your liquid ferts already contain cal mag. Look at the ingredients: magnesium sulfate or magnesium nitrate, calcium nitrate, etc...If the ferts dont contain cal mag you can add some to your water by using 1/4 teaspoon epsom salts + 1/4 teaspoon powdered gypsum per (3.8L) gallon of water. This will give you 30ppm mag and 70 ppm ca. Calcium nitrate can be used instead of the gypsum at the same rate but will add 50ppm nitrogen and you might not want that in flower. The epsom gypsum combo can be added every third fert or so with dol. lime in the soil or everytime when no dol. lime or levels need boosting. This will not hurt the plant or be toxic.

Test ec and ph using my methods first so we can decide what might be best to do.

 

[stinger_489]

Ok i`ll do a ph+ec test tomorrow...thanks for the help.

 

[sproutco]

Odd that this is the only plant showing these symptoms, right? Then check the root system of this bad one. Roots should be white. Pay close attention to the tips being white or brown. Is this one being overwatered more than others? Sometimes when following a schedule say watering every third or fourth day, inevitably some plants could get over watered.

Tip: to prevent and cure rootrot in soil grown plants, add 2 teaspoons (10ml) 3% hydrogen peroxide per gallon (3.8L) of water along with your regular fert water. :smile:

 

[Blackmelo]

Looks alot like a nutrient burn to me.

It sounds like you know quite a bit about growing cannabis already so not that many variables that can be wrong really. I think you might just be overfeeding it a bit.

Hold on, did i read right that you are using a 220liter reservoir to feed this plant with? Isn't that a bit excessive and how do you do it..?
I know I can't leave my nutrient mix standing or it starts rotting.

Uh oh, just read that you use superthrive in flowering. I've never used this stuff but a fellow grower who does, said this is a big no no.

 

[vavwl]

Looks like its been over fed to me as well. I'd try flushing it

 

[stinger_489]

i have a 210 litre res and i`m feeding it via a watering can...lol...as for overfeeding it i can`t think why...she`s being fed when i think the pots are light with an EC of around 0.9 same as the others are getting (apologies for keep mentioning "the others" but i can`t figure why one would look so tired yet the others seem to be thriving)...as for the roots...the roots are down to the bottom of the 3 gallon bucket but don`t really seem that root bound...(i`ve had worse) i`ve already give her a damn good flushing through...i still have`nt had time to get a soil ph checker Sproutco as the shops are closed by the time i`ve got home from work. As for the `superthrive being a no-no...i`m only using a drop a gallon..or approx 5ml per 210 litres so i`m sure i`m not overdoing it. I hate to appear negative towards peoples suggestions but i can honestly say that i`ve tried 9/10 of them before posting so please don`t think i`m being obnoxious. The only thing i haven`t tried due to not being able to get one yet is the soil PH.. I`ve always thought the lovely weed was just that....a weed..i`ve never experienced a prob like this in hydro before and its kinda bashing my head a little...