farmerjoe420
Well-Known Member
You should treat it like hydro, 5.8 PH
ProMix... Is it considered hydroponics or soil gardening?
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farmerjoe420
Well-Known Member
@Herb & Suds why the wow emoji ?
Herb & Suds
Well-Known Member
I run well water at 8.1 and never check ph after adding anything
You seemed convinced it must be 5.8 ph
I haven’t seen any reason to go near that or even think I have issues
But if you think you need to ph in a buffered medium it is your prerogative
farmerjoe420
Well-Known Member
I think if I were giving advice, i would be mindful of where my info was coming from. 5.8 is a industry standard in terms of PH in regards to hydroponics and there is an important reason why this applies to promix. I’m sure you already know why though ?
farmerjoe420
Well-Known Member
Another thing, my advice isn’t based on prerogative. It’s based on science that comes from people smarter than you or I.
You can see from your picture you clearly have imbalances. It doesn’t look bad but you have some things going on there. You wanna take a guess at what premier horticulture “buffers” there medium to ? Also, even if it is buffered, you think source water has no affect on medium PH ?
farmerjoe420
Well-Known Member
They recommend 5.5-6.0 for promix as being the optimal range.
farmerjoe420
Well-Known Member
i don’t adjust to 5.5, I stay between 5.8-6.0
PadawanWarrior
Well-Known Member
Depends on what you add and how you treat it. It's a soilless mix, but add some compost and use organic nutes and I'd say then it's no longer soilless.
If that works for you then nice, I have never adjusted ph like that. When I ran liquid I would just mix and pour and I never ran into too many issues, had a couple bad bales of pro mix but nothing terrible. Now I run pro mix with ewc, rabbit castings, compost, lime, gaia green and I still just water from the well.
Milky Weed
Well-Known Member
I adjust to 6.0 and the plants seem to like that. I add epsom and gypsum with kelp humic and fluvic. I plan on drifting the ph up towards 6.5 as they finish up.
farmerjoe420
Well-Known Member
your not really using promix then anymore. Your more considered soil so a higher PH makes sense
Herb & Suds
Well-Known Member
So if he was in coco it would be acceptable?
I’m not even sure wtf you are defending
But that’s just me
Let me guess …nerds ?
Herb & Suds
Well-Known Member
So I should always rely on manufacturing recommendations just like the seed and nutrient industry?
cause it’s so honest ?
farmerjoe420
Well-Known Member
do you realize how small of a market we are to them ? your comparing premier horticulture to a seed company ?
farmerjoe420
Well-Known Member
PH 6 or lower ? yes, it would be acceptable
Kassiopeija
Well-Known Member
strange just 2 days ago I was reading an evaluation of soil-types for hemp and it cited sandy-loam and peat as potentially viable for outdoor farmers. It was an US review IIRC. Let me just search for it.
I doubt peat is inert, although there are different peat. But I've used a mixture of black & white peat to run water through and it releases alot of good bioavailable stuff, that even showed up on an EC meter.
It's plant material that is broken down, yeah most if what it did contain has been washed out but not all. If you establish a bacteria culture in a peat based soil they may free more nitrogen when further breaking it down.
Isnt the general idea of soil that it is a mixture of plant material (in various stages of decay) + mineralic content?
10 years ago I took soil-probes on various outdoor locations where stinging nettles grew (before planting there) and the meter would show pH 8.0 & EC 0.01mS. The soil from the farmers field also shows this.
But it's not inert. Organic compounds mostly can't be traced, needs to be combusted during a lab analysis.
As for proper pH set, the ratio of nitrate-to-ammonia in the fertilizer has an influence on that.
PadawanWarrior
Well-Known Member
Peat vs Coco Coir
This can be a hotly debated topic among growers as to what's the best media for growing plants. In this article, I'll weigh in with my opinion on the subject as there are Pros and Cons to both.
www.kisorganics.com
Kassiopeija
Well-Known Member
A Review on the Current State of Knowledge of Growing Conditions, Agronomic Soil Health Practices and Utilities of Hemp in the United States
"Growing Conditions for Hemp Cultivation
3.1. Soil Conditions
Hemp can be grown on several soil types, but it thrives best on loose, well-drained loam soils that are rich in organic matter [53,54]. The most suitable soil for hemp cultivation should have a pH 6.0–7.5 [28] and according to [55], the optimum soil pH for hemp production ranges between 5.8 and 6.0 as it does not grow well in acidic soil. The soil should be deep, well-aerated, rich in nutrients, and have a good water-holding capacity [53]. Sandy loam texture is ideal for hemp growth, followed by clay loam, but heavy clay soil and sandy soil are not very well suitable because they hold too much or too little water [56]. Soil preparation is an essential process in hemp cultivation, and all soil hard pans should be broken to allow free draining as waterlogging kills the plants, especially the young ones. The presence of a compacted layer can restrain root development, particularly when the compaction pan is due to poor soil preparation. Hemp is a tap-rooted crop, and in fine soils, the taproot typically takes on an L-shape, which negatively affects the uptake of nutrients and water by the crop [15]. A study concluded that fertile clay loam or silt loam soils with neutral alkalinity are most suitable for hemp cultivation [57]. Hemp does not germinate well in acid sandy soils, heavy clay, or gravelly soils. Hemp plants could grow in peaty marshlands but will yield lower amounts and quality of fiber [57]. Hemp is very sensitive to soil moisture conditions and should not be subjected to drought. It grows well in soils with high water-holding capacity, and good soil drainage is crucial to maximizing its production since most hemp plants failed to grow in poorly drained soils [58]."
"Growing Conditions for Hemp Cultivation
3.1. Soil Conditions
Hemp can be grown on several soil types, but it thrives best on loose, well-drained loam soils that are rich in organic matter [53,54]. The most suitable soil for hemp cultivation should have a pH 6.0–7.5 [28] and according to [55], the optimum soil pH for hemp production ranges between 5.8 and 6.0 as it does not grow well in acidic soil. The soil should be deep, well-aerated, rich in nutrients, and have a good water-holding capacity [53]. Sandy loam texture is ideal for hemp growth, followed by clay loam, but heavy clay soil and sandy soil are not very well suitable because they hold too much or too little water [56]. Soil preparation is an essential process in hemp cultivation, and all soil hard pans should be broken to allow free draining as waterlogging kills the plants, especially the young ones. The presence of a compacted layer can restrain root development, particularly when the compaction pan is due to poor soil preparation. Hemp is a tap-rooted crop, and in fine soils, the taproot typically takes on an L-shape, which negatively affects the uptake of nutrients and water by the crop [15]. A study concluded that fertile clay loam or silt loam soils with neutral alkalinity are most suitable for hemp cultivation [57]. Hemp does not germinate well in acid sandy soils, heavy clay, or gravelly soils. Hemp plants could grow in peaty marshlands but will yield lower amounts and quality of fiber [57]. Hemp is very sensitive to soil moisture conditions and should not be subjected to drought. It grows well in soils with high water-holding capacity, and good soil drainage is crucial to maximizing its production since most hemp plants failed to grow in poorly drained soils [58]."