Limited nutrients available, help needed!

Billy the Mountain

Billy the Mountain

Well-Known Member
OldMedUser said:
That's not what I've read over the years. Tomatoes prefer higher P to K tho need plenty of that too where pot prefers more K than P after the stretch to fatten up the buds. Excess P in pot is what gives that 'chem' taste in overfed bud. That's why I prefer Big Bud for my bud booster after an initial dose of P/K, (0-52-34), for the stretch as it's 0-15-35 with 10%S and other goodies. I always cut back on N after the stretch by switching to Lucas Formula feeding.

I'm not saying to eliminate P or any other nute but by adjusting the ratio of nutrients for the different stages of flowering it can make a big difference to the outcome. More important in hydro growing like the 50 DWC grows I've done since '01than in organics but still applicable. With the orgnics I'm getting into these days I just try to make sure there's enough of everything in the soil so the plant can take what it needs when it needs it. Excesses of one over the other can screw that up tho.

:peace:
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The need to elevate P is grossly overstated (for cannabis as well)

Uptake of nutes for a tomato, K uptake is dramatically higher than P:

Tomato_nutes.png
 
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OldMedUser

OldMedUser

Well-Known Member
Billy the Mountain said:
The need to elevate P is grossly overstated (for cannabis as well)

Uptake of nutes for a tomato, K uptake is dramatically higher than P:

View attachment 5125556
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Interesting. Is there one like that for pot?

This is a pretty detailed discussion about nutrient levels required for pot and the charts not too far down the page show K requirements at much higher levels that P. Goes into a lot of the factors that influence uptake of various nutrients and how they are influenced by nute ratios, environmental factors and pH levels. Fairly technical but worth looking at.

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That's one of the great things about this hobby. Never a shortage of things to learn more about to improve the grow. :)

I always had really decent grows with DWC but am still struggling with indoor organic growing after switching that way about 3 years ago. Just soilless Promix HP with hydro nutes worked fine but mixing organics in seems to trip me up.

:peace:
 
PopAndSonGrows

PopAndSonGrows

Well-Known Member
Jadeit said:
I do grow tomato, and pepper plants myself, and I've got a simple NPK liquid, it has a strong odor and it's fully black, but dirt cheap and lasts a long time, plants seem to really like tho. But will a simple NPK liquid keep mj plant healthy? But in regards to organic products, I know too little to play around with a mj plant. Unfortunately, I've seen local growers themselves use EU products instead of their local ones, but nevertheless will check that route as well and see what I can find.
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Whatever this NPK liquid is, yes. By all means use it. "Use what you have" it's rule #2
 
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