Discussion in 'Marijuana Plant Problems' started by Henry2018, Jan 8, 2018.
Hi just wondering if any one can confirm that this is cal/mag deficiency. Cheers
Might be nitrogen deficiency
looks like its at the beginning of flower. are you still feeding it veg feed or did you already flip to flower nutes?
you need to keep feeding veg nutes till the stretch is pretty much done, then transition to bloom food over a couple of feedings. they're producing a lot of new growth at that time, and if they don't get enough N they'll cannibalize their lower leaves to feed the newer growth.
right now i'd give them just a little extra N, but not a lot, to stop the lower leaves from fading a lot more, but too much can interfere with the next stage, which is coming soon.
you may have a small calcium deficiency. doesn't look like a mag problem to me. remember they aren't hooked to each other, thats's just the way they're marketed.
I did flush it a couple weeks ago but it had nutes in and its had a feed yesterday so i dnt think its that.
Yeh ive still been giving veg nutes until stretch stops.
how much of what are you feeding it? and how often?
looks like N deficiency. that one leaf with the freckles looks like a little cal deficiency, too.
The nutes ive been using is called hydro coco grow,it is step 1 of 3 npk 10-5-4 and i water,feed,water feed etc.it says add up to 2ml per ltr and if i give it the full 2ml the ppm dosent even go over 400.so should i add more to bring the ppm up?
400 ppm in coco isn't that bad, they shouldn't be that faded. i'd try upping to about 600 ppm and see what happens, some strains are just hungrier than others.
Im in soil nd the nutes are ment to be alright for soil
i'd still try upping it a little, just looks hungry to me
I gave her a feed last night and to get just under 600ppm i had to add 9ml of veg nutes but she does look better today.how long does the stretch last,im 2 weeks into flower and was wondering when will i switch to bloom nutes and when i do is it a straight swap as the bloom has nitrogen in npk 5-4-9
usually about two weeks, depends on the plant. i'd guess they're about ready by now. i'd switch over 3 or 4 feedings, 75% veg food, 25% bloom, then 50-50, then 25-75.
Ok alot of my lower leaves have turned yellow over last couple days and im flapping incase i kill her.
Is there any nutes u would reccomend the ones im using is from the pound shop.
almost any well known company will make a decent product, that will do the job, but almost all of them premix, which means you're paying for a bottle of mostly water.
i like Jack's dry salts. i use three different kinds through the life of a plant. you can buy jack's for a fraction of the cost, and mix them yourself as needed. a lot of people use the citrus blend from start to finish.
i use the 20-20-20 for veg, the first two weeks after the stretch, i use blossom booster, which is like a pk boost, then i use the citrus to finish up with.
You wont kill her. Might not be pretty but she will survive.
Try canna or ionic if you want something reasonably priced. wont be as cheap as the pound shop though mate.
Yes, there are problems with liquid nutes -- like precipitation. But dry nutes aren't perfect. Many of them attract moisture and go bad if they aren't packaged & sealed properly. Apparently calcium is known for this because a lot of the dry nutes have zero calcium -- Jacks citrus is one of them.
I use a product called 'Sea Grow Bloom' and it also has zero calcium. Pretty sure they omit it for shelf life.
they usually leave out either calcium, or sulfur. they don't get along, and will combine and settle out in an insoluble solid. some will put in both, and rely on the chelating agent to keep them separated, but i'd rather add it back in myself.
i use a product meant for tomatoes, its a foliar calcium spray called yield booster. i spray it once every two weeks and it seems to be sufficient, i haven't seen one calcium freckle since i started using it.
I've heard other growers say that giving plants calcium at the end keeps them from finishing properly. Is this true?
It's hard to just cut off calcium in soil -- or even promix for that matter. Anything buffered with lime has calcium.
Lately I've been experimenting with calcined clay (kitty litter) and peat moss. Clay is alkaline & peat is acidic, so the combination should be close to neutral. I've been using this combo with young plants and they seem to like it. Not sure if I'll stick with it for the final repot or just go with straight promix HP.
What do you think?
i've heard that the kitty litter has a lot of capacity for cations, was thinking about looking into it myself, when the 5 thousand other things i have to do get done
I learned the hard way not to use kitty litter straight out of the bag. Gotta screen it first to filter out dust & sandy particles, then pre-charge with 300 PPM cal-mag.
I'll get a pic. I screened a bag of Special Kitty last night.
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