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Ideal ppm for fruiting
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Posted by wordwiz (My Page) on Wed, Mar 11, 09 at 21:25
| Is there such a thing or does one go with the horse you rode to the dance?
This is not a high-tech set-up, I use a generic Bloom and Fruit fert (5-30-5) once flowers appear, at a rate of about one ounce per gallon per week, which gives me a ppm of about 2200-2300.
Should it be more like a 5-30-30 or 5-30-20 mix and should the ppm be lower?
Mike |
Follow-Up Postings:
RE: Ideal ppm for fruiting
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| Well for one thing it varies according to what you're growing. Can't really give much advice on the NPK ratio or nutrient concentrations without some idea what you're growing. |
RE: Ideal ppm for fruiting
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| Tomatoes, specifically Siletz, a determinate, parthenocarpic variety. The fertilizer is something like a 5-30-10 plus I add a multivitamin a week in a 4-gallon bucket. (Don't laugh - it works great because it has lots of the micronutrients needed). Mike |
RE: Ideal ppm for fruiting
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RE: Ideal ppm for fruiting
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Hi greystoke,
The author of your link kept Phosphorus constant; ie: never elevates P for a "bloom" nutrient solution. Yet many people are convinced "bloom" formulations (high P ratio) are the best strategy.
? Do you have any experience altering the P content ?
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RE: Ideal ppm for fruiting
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| I checked the solution today and it was 780 ppm. The plant has several pre-blooms on it. Mike |
RE: Ideal ppm for fruiting
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| Sounds good. Tomatoes typically like a heavy feeding schedule so I'd bet you could up that ppm by at least 50%, probably 100% or more. If it was mine I'd probably up to 1000ppm, assuming the plant has a few true leaves on it already. In my experience tomatoes don't require a radically different feeding regimen during fruiting since they are still growing vegetatively during that process as well. I'll add in some PK boosters like Big Bud and carbohydrates, just to make sure the plant has extra resources and energy readily available, but I like to have a more balanced main nutrient doing most of the work. |
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