Help maximize output of undernourished and underwatered garden, ~150 plants

[Purple Jungle]

Hey everyone. Some of you might remember my thread OVERGROW THE JUNGLE!!!! 2016

Shortly after this picture was taken, I went through something and I was unable to tend to my babies until now, I had someone else check on the plantation very occasionally...

Here's a couple of more recent pictures, taken ~10 days ago before I culled the males:

The garden's doing well considering the situation. No major issues whatsoever, except they're small, but that's alright... As long as the quality of the final product comes out great, I am happy.

How much water they have gotten => There's a little stream nearby that I have channeled to feed a dripping irrigation system through a filter. The system runs on 100% capacity for about a day and then the filter gets clogged and it starts letting out smaller and smaller amounts of water. Since mid June, every 2 or 3 weeks the filter was cleaned, meaning that the plants have never been let to dry out completely because the filter definitely never gets totally clogged. Meanwhile, no rain whatsoever...

Ferts => In terms of food, just 2 liters of Biobuzz fishmix...

Around 10 days ago, I fed them a small amount of ammonium nitrate mixed with a small amount of a NPK fert that I had lying around. Hard to estimate the actual strength of that mix, but it's considerably less than what it's required.
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Unfortunately, I have to leave now, leaving the post unfinished, I what I have written so far makes sense, I will edit it further later.

Now, most of the plants are already flowering. The question is: what should I do now in order to optimize the quality first, and also of course maximize the quantity...

 

[BigNoise]

I don't have any tips for you, just wanted to say I love seeing big patches of low maintenance ganja.

Happy growing!

 

[Purple Jungle]

Cool, cool.

Time to feed them a little something, just not sure what's best, I'd just give them molasses and low amounts of NPK ferts cause I am afraid fucking it up at this stage... would love other people's input.

 

[green-genes77]

Cultivate the soil and work in a quick-release powdered source of P like bat or seabird guano. You already know that you should avoid too much N this late in the game but it looks early enough that another little push along with a heavy watering wouldn't hurt.

Use whatever mild product, like fish emulsion, you like at about 2 tablespoons per gallon along with a tablespoon of unsulphured black strap molasses per gallon.

Give each plant 5 gallons of this mixture in whatever is a reasonable timeframe. This sounds like it might mean hauling a bunch, but the effort will manifest itself in a greater yield of better flowers.

It sounds like maybe you have someone who can help you. I'd enlist them and do the above and then re-apply high P guano at 5 weeks to harvest.

Haul as much water to them as you can.

 

[jtk707]

I second the bat guano . Long lasting and works great

 

[Purple Jungle]

So everyone's saying just feed and water them. I expected that I'd have to do something special Alright...

 

[rykus]

i'd use a pre mix organic bloom... most have bone meal bat guano gypsum and all the good stuff plants like..(minus electrolytes) then add a bunch of fresh h2o... should be huge!

fish n crab meal also kicks ass if not a lot of bears n what not...

 

[Purple Jungle]

Fed them 300ml biobizz fishmix today, plus foliar fed them the same.
I'll continue feeding them sure enough, but that was it for this week...

I'll give them a rather small amount of ammonium nitrate again next week and afterwards I will switch to a bloom mix.

 

[gorilla ganja]

Be careful if you have big meat eating creatures around. Like rykus said.
Blood meal, fish stuff, crab meal ect. would bring out the big boys around where I am. They are not interested in the plants , but will dig up an entire garden looking for the fish.

The plants do look good tho. How long of a season do you have left?

best of luck with your garden.

Peace GG

 

[Purple Jungle]

Only have foxes and coyotes around here?

Should have at least 2 months left, never really paid attention previously...

The plants do look good tho. How long of a season do you have left?

I have an issue on some plants, one plant could be weird, but the surrounding plants are fine, or I could have a patch of 4-5 plants:
the inner leaves starting from the fan leaves on the main stalk turn yellow... forgot to take pictures of that stuff today... Looks like iron deficiency... It could be Fe and N deficiency... But how come it could only affect some plants?

Thanks for chiming in GG, nice to see ya again

 

[Purple Jungle]

How much bat guano do I need?

 

[z-ro]

plants look ok, normal deficiency nothing crazy i can see. if it were my patch id see about watering in a strong salt/conventional nutrient via the drip system to get em on the right track quickly.

 

[Purple Jungle]

plants look ok, normal deficiency nothing crazy i can see. if it were my patch id see about watering in a strong salt/conventional nutrient via the drip system to get em on the right track quickly.

Actually, that's the route I am going, I am comparing prices though as I am a noob --- I realize that a few times in a week...

My issue with conventional ferts is that the labels always say "this much per 100 square meters" or "this much per liter" and that doesn't say too much to me. Like yeah... is this per feeding, once per season, what culture are we talking, I just run the water/drip for days... too many variables that I am trying to clear up. And I DO NOT want to fuck this up under no circumstances...

And I am used to shit, I've only worked with shit in the past, never had deficiencies ever... so just don't know where to start! ... 4:30AM

 

[Purple Jungle]

Deficiencies - can't post in Cannabis Infirmary???

Deficiencies - can't post in Cannabis Infirmary???

So here are some photos of the plants that don't look so good.
Deficiencies could be tricky!...
One plant could be fine, the next could be yellowing, there might be a patch of 4 plants yellowing...

Symptoms: bottom inner fan leaves get yellow and die off < that has happened on a lot of plants. However on as in the photos, this continues with the upper inner leaves and progresses to all fan leaves.

Is that what N deficiency looks like? Or that deficiency of few elements...

 

[gorilla ganja]

I'd say magnesium. Try some cheap Epsom salt.
With a nitrogen deficiency the whole leaf will turn yellow and from the bottom up as the plant steals the N from lower fans.
With magnesium the inner leaf will stay green.

As far as certain plants being affected while others are not. I run in to that a lot in the bush, the soil can vary quite a bit just a few feet over or the amount of water the soil retains can also be different from say the top of one of your hills to the bottom of a trough.

You can spray the epsom salts on just the affected plants.

Peace GG

 

[macky1708]

Yeah definitely a mag problem I would wit em with camg from go once or twice at 7.5 ml per gallon and sprinkle Epsom salt after also add a little nitrogen and phosphorus to the mix

 

[BAKED_BEANZ]

https://www.icmag.com/ic/showthread.php?t=231387

 

[_tessarecting]

Top dress Growilla as needed

 

[Purple Jungle]

Alright, thanks everyone!

Alright, thanks everyone!

So far I have:
- fed 300ml biobizz fishmix
- sprayed fishmix
- fed eyeballed ~300g of ammonium nitrate for final boost
- marginal amounts of iron and other macro-elements (50g?)
- just coming back from addin ~300g of (magnesium sulfate) epsom salts to the mixing tank

As far as certain plants being affected while others are not. I run in to that a lot in the bush, the soil can vary quite a bit just a few feet over

That would be the case indeed, I even noticed that when I was working the spot.

I will wait a few days and if necessary I will spray with epsom salts. I have also ordered 5kg of ferts 5-20-35 and 10kg of molasses.

Now back to MAGNESIUM. I have found some interesting stuff lurking around:

You'll want to add the epsom salts with EVERY watering now until the end of flowering. Initially, I would put 1 teaspoon per gallon for the first few waterings and then back off to 1/4-1/2 teaspoon per gallon the rest of the way.

Epsom with every watering in flower? Sounds a little overkill. I hardly use any of the stuff and do just fine.

I agree with what 3LegDog has said. While some strains may not need much mag, others will starve for it. All the strains I have grown loved a consistent, albeit in small amounts, feeding of epsom salts.


... [edited out]


Advanced Nutrients has been very outspoken for quite some time now that cannabis plants are, in general, Magnesium "hogs". While most conventional teachings have led growers to believe they should dose their plants with plenty of nitrogen, it's actually Magnesium that the species craves (especially when in flower). Most nutrient regimes lack adequate magnesium levels. Hence, the advent of Cal-Mag supplements and the like. I used Advanced Nutrients 2+ program exclusively but never tried the Cal-Mag. I just used epsom salts (which cost a fraction of the price) with great success. Never felt a need to change.

Considering that my spot seems to be magnesium deficient, I am thinking about trying that out?

 

[slownickel]

Be very careful with magnesium. If you have a deficiency of Mg, Mg in a foliar is 100% effective and you won't take the risk of having Mg stopping up your soil. Mg tightens up the soil, making an anaerobic (no air) at the root zone.

You are farming blind. This crop deserves spending the money on a decent soil analysis. If you want to learn, I suggest learning correctly.

If you have low Ca, lots of deficiencies show up, and the worst thing you can do is start pouring on a bunch of woowoo juice that you don't need as anything but calcium will make the situation worse.

Send a soil sample into spectrum and you will have results in a week. In the meantime, apply a bit of Mg foliarly if you really think you have a Mg problem.

As for adding iron, chances are you are drowning in iron.

You have little chance of learning by guessing.