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Fertilizer levels

This is a discussion on Fertilizer levels within the General Orchid Culture forums, part of the Orchid Culture category; A grower was recently discussing her culture and referred the levels of fertiler she used ...

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  1. #1
    Piper's Avatar
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    Default Fertilizer levels

    A grower was recently discussing her culture and referred the levels of fertiler she used in ppm. Without having a device to measure dissolved particles, I was wondering if anyone could give a rough estimate of what 300 ppm would be and 500 ppm. (For example, 500 ppm would be nearly full strength, 300 ppm would be half the fert's recommended strength.)

    This is rather unscientific of me, but I can live with that!

    Also, she mentioned she waters with hydrogen peroxide once every fifth time. What would this do for the roots, or is it preventative?

    Julie

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    If you know what the TDS is for your water & the NPK of your fert then you can use the link below to work out your fert levels.
    Fertilizer Calculator
    I,ve used hydrogen peroxide to kill the algae build up in s/h pots(about 6% concentration) so i think basically a preventive treatment.

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    Excellent! (And very cool!)

    Thanks, Steve - this was better than I hoped for! I'm mostly using reverse osmosis water, so it's the fert concentration I'm concerned with.

    Julie

    PS - BD, perhaps we could have a link's link with all the really handy Websites we've been finding... Maybe under the FAQ category? This would certainly be useful to have somewhere sticky.

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    Quote Originally Posted by Piper
    PS - BD, perhaps we could have a link's link with all the really handy Websites we've been finding... Maybe under the FAQ category? This would certainly be useful to have somewhere sticky.
    I thought that wasn't allowed, since Ray is a vendor and has a forum....
    Confused...maybe I just don't understand what links are and are not allowed?

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    I have used Ray Barkalow's S/H method. I use the MSU (Michigan State University) formula fertilizer which is an approximate 3-1-3 ratio. This has been confirmed by another commercial orchid grower in Ontario, Canada. I try to achieve a Nitrogen level of 125 ppm (parts per million). On Ray's web site, he has a fertilizer calculator that has fields which you can enter the Nitrogen, Phosphorus and Potassium numbers and it will give you the amount of liquid fertilzer concentrate to add per gallon of water. I use distilled water with the MSU formula, and it gives me a pH level of 6.5. With this level I have had great results, and using the S/H culture I give my plants this mixture every time I water. However, by filling the container to the top, I flush the LECA media, and have no salt build up, plus the old reserve solution flushes out, and is replaced by new fertilizer solution. I have read that commercial growers use a Nitrogen level of 100-250ppm.

    Gregg C.

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    Quote Originally Posted by Annie
    I thought that wasn't allowed, since Ray is a vendor and has a forum....
    Confused...maybe I just don't understand what links are and are not allowed?
    Hi, Annie/Heather!

    Sorry for your confusion, but, just for everyone's reference, I pasted the pertinent paragraphs of our Terms and Conditions below. For the record, Steve's excellent history of posts over the years tells me that his intent with his link was to help educate, and not promote or sell. Your post, however, draws far more attention to that site's 'other' elements than his link does.

    If members come across posts which they feel violate the terms with which they agreed, they may use the "report this post" function by clicking the little red triangle at the top right of each message. Clicking the triangle will open an editor window which, when submitted, will alert us regarding Terms & Conditions violations or spam.

    Otherwise, I would appreciate it if you leave the moderation of this forum to us.


    "The OrchidTalk forums are not a venue for the sale, trade, barter, exchange or solicitation of goods or services of any kind or nature. The posting of messages by anyone other than the Administrators or legal representatives of rv-orchidworks.com, in any forum, subforum, signature line, member profile area, or other portion of the Site, which seek to advertise or solicit by verbiage, photograph, sound file, internet link, or any other means, goods and services for sale, trade, barter, or exchange, whether such messages are positively, negatively, or neutrally construed, whether the items or services referenced are privately or publicly available, for free or for profit, posted by commercial ventures, non-profit organizations, or individuals, including but not limited to, advertisements and solicitations made on one's own behalf, or on the behalf of any other individual, organization, group, or enterprise, is strictly forbidden.

    Links: A member may post one link to another website if and only if the referenced site is educational, governmental, or not-for-profit in nature. The linked-to page may not contain references to or verbiage about products or services for sale, trade, or exchange, or itself contain promotionally worded links to pages with such content. Links to gardening or orchid-related forums are specifically forbidden."

    Quote Originally Posted by Piper
    PS - BD, perhaps we could have a link's link with all the really handy Websites we've been finding... Maybe under the FAQ category? This would certainly be useful to have somewhere sticky.
    Julie, I'm taking your request into consideration. I think it's a really good idea; I just have to figure out how to do it and still remain true to our policy. I will do my best!


    Cheers!
    BD

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    Thanks, BD - I'm sure whatever you come up with will be great!

    Julie

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    Am i allowed to ask about brands of fertilizer. I get the percentages part but I am curious about recomendations because maybe some are more harsh than others. I use one type and wonder if there are better ones for mounted orchids

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    Quote Originally Posted by etothex
    Am i allowed to ask about brands of fertilizer. I get the percentages part but I am curious about recomendations because maybe some are more harsh than others. I use one type and wonder if there are better ones for mounted orchids
    Hi Kevin!

    Welcome to OrchidTalk. I have enjoyed your posts. I think the easiest way to answer your question about 'asking for brands of fertilizer for mounted orchids' is with an example, so here goes:

    Members can post 'Clorox bleach' but should not say where to purchase it or where to buy it. If the intention of the post is educational and not to advertise products or services, then we don't have any problem with it. It is only when a member abuses or stretches our policy too thin that we respond.

    BTW, if you do a search, there are lots of brands of fert mentioned throughout the board, I don't recall anyone specifically saying that one is better for mounted orchids than another one, but I am sure you will get a PM or two with some great information-- if it is available. As far as what we use here at RVO, well, everything gets the same balanced fert once a week. 'M.S.U.' and 'Miracle Grow' are two brands we use, but we change that out fairly regularly. I suppose potted orchids in bark need a bit higher nitrogen than mounted orchids, but that is probably the only difference


    Cheers!
    BD

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    Peroxcide in the water will kill off fungus knats and eggs , it also treats the roots .
    Gin

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