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  1. D

    Leaves falling off

    Sometimes I have this problem too. I have not understood the cause. I am interested in.
  2. D

    Urea and pH of the soil

    Thank You
  3. D

    Urea and pH of the soil

    Hello everyone, it is not clear to me how urea modifies the pH of the soil. Does it increase or decrease the pH? We know that at least in part it is absorbed degraded into ammonium ions and therefore should make the soil more acidic but in part it is also absorbed directly as urea. Anyone know...
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    pH etc..

    In the "Soilless Mix." graphic of Naoki the phosphorus behavior is strange .. phosphorus is assorbed better with very low pH? It is the opposite then in the graphic reported by Stone. Isn't it?
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    Well Water Analysis Results - Ok for my slippers?

    Don't you think that 34 ppm of Sodium are too much?
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    brachypetalum

    Wonderful.. please tell us something about growing tips thank you
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    Macroelements/microelements must be a costant ratio?

    The largest differences are in Boron, Fe, Cu ...
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    Macroelements/microelements must be a costant ratio?

    But if I use the same commercially available complete fertilizer at 50 ppm N I underdose micros?
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    Macroelements/microelements must be a costant ratio?

    Thank you Gonewild but the problem is that on complete fertilizer label there are the micronutrients ratios but the their ppm in the final solution depend by how much fertlizer I have used.... For 100 ppm of N I have x ppm of Boron (for istance) and for 200 ppm of N I have 2X ppm of Boron ...
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    Macroelements/microelements must be a costant ratio?

    Is there something written about the range suggested for each microelement in solution? A minimum and a maximum level? Irrigation water without any fertilizer should have the same amount of microelements?
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    Macroelements/microelements must be a costant ratio?

    Dear Orchid friends, The ratio of macro and microelements in a nutrient solution must be costant? In other words a solution with 100 ppm of N must have more microelements of a solution with 60 ppm of N? Or should be better if microelements were in the same amount in both solutions? Our hobby is...
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    Of Vermicompost teas.

    OK, Thank you
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    Of Vermicompost teas.

    But I Know that EC meter is not very usefull for organic fertilizer ....
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    Sodium toxic level for orchids

    It is very interesting that there are so different opinions about Na level in irrigation water: Below 75 ppm, the best would be 0 ppm........ Perhaps a good idea is that of Myxodex ? In deciding the right level of K is important the NH4+ level anda Na level too?
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    Sodium toxic level for orchids

    Irrigation water
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