soils that are high in nitrogen.

[caveman117]

Hey there,

Id like to talk about soils that are high in N. Say you use a soil that you discover doesnt need to be fertilized at all in veg. And then pre flower comes around and your plants are very happy with all the abundant nitrogen to fuel their/ stretch and ffill out to produce some tasty buds. Theplants go through their stretch and look great still aand are putting out some nice looking hairy buttons that turn into great looking little buds.

Now the real part of flowering starts and your plants now dont know what to do with all this extra nitrogen. In my opinion your plants are either going to turn dark green and show very obvious n toxicity, or they will start to pale rapidly (bud leaves may still be dark dark green) and your fan leaves will start to go limp and fall off.

The second of those two options (keep in mind these are just two scenarios I view as common in this situation and there are more things someone may see) is more likely to occur. It will look almost like an N defficiency but with very limp leaves and maybe some mild looking claw in the leaves (by mild I mean not angry looking haha more of a sad looking claw).

So for conversation sake as a grower what would you do for the plant?
And for people that have run into this problem what soil were you in (if pre packaged)? Or what was the mix you made (if you ammended it yourself)?

I feel like this could potentially be a useful thread to give new growers an idea of may be too hot in the N department. I in my cureent grow I have this going on (mainly because I tried to usemy tomato soil which is really high in N and ism made to in the garden and not in a pot.

 

[caveman117]

I didnt even pist about the medium I'm in that is too packed with nitrogen.

Its pro mix bx cut with coco coir and has earthworm casring, blood and bone meal, desert bat guano and lawn lime.

Fir future referwnce this comes out about 5.5-5.8 ph and is not suitableIMO.

The ratios were 2x bales of promix cut at 30%-40% cocogrow coir and about a pound of each of the ammendments I listed.

 

[Cobnobuler]

Bloodmeal is some wicked N

 

[WattSaver]

Okay you're off a bit in your assumptions. If your mix has worked well from veg thru stretch with no signs of over N problems then there will be no strange excess N problems through the end of flower. I've run several 15-9-12, 14-14-14, & 20-20-20 in soil and passive hydro, the worst thing that happened was that the plants were healthy green when harvested. As long as you don't over amp your medium this weed will grow well. Are there subtle differences adjusting the NPK ratio during different phases of growth? Yes But is there a detrimental reaction not adjusting the NPK? No

 

[caveman117]

Hmm interesting. How did youddetermine the npk of your mix? The mix I use for tomatoes has high n pretty low p and high k. But I know how I would go about telling the actual number. I wouldnt thibk youd jist add the numbers of the ammwnsments.

 

[WattSaver]

Hmm interesting. How did youddetermine the npk of your mix? The mix I use for tomatoes has high n pretty low p and high k. But I know how I would go about telling the actual number. I wouldnt thibk youd jist add the numbers of the ammwnsments.

For me I use control release fertilizers. These prills release nutes over time and somehow release them as the plant request them. I use a blend of 2 Osmocote products. So in the passive hydro, the medium is either perlite or coco, so it's pretty easy to predict the NPK. During veg I use Osmocote Plus (15-9-12) blended into the FFHF potting soil, so the exact ratio would be hard to determine, but it's N heavy.

So your tomato mix soil probably has time release ferts in it, since it has a posted NPK on the bag. Until you do a grow or 2 with this mix, you won't really know how long the mix will last. You may have to add food later in flower then again maybe you won't.

Here's my room at day 51 note there is no yellow leaf, so growing with N as long as it isn't intense is a good thing for the plant.

 

[caveman117]

The tomato mix.s just a basic mix ive found my tomatoes like. I make it. Its just perlite, peat moss, coco, desert bat guano, bone/blood meals. Heavy in n. And it has lime in it to but not enough apparently because its still pretty acidic.