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Dave thanks for answering.
I have dwarf citrus growing in containers; see my http://www.rossde.com/garden/dwarf_citrus.html. I use a potting mix that tends to be acidic because of the large amount of peat moss; see my http://www.rossde.com/garden/garden_potting_mix.html. The mix also contains bone meal and gypsum, both of which are sources of calcium. Since the mix drains well, nutrients leach away. This is accelerated by the fact that the containers are slightly elevated on loose bricks and do not sit in any saucers or non-draining outer containers. Thus, I have to feed frequently (but lightly to avoid burning confined roots). I alternate between a commercial citrus food and ammonium sulfate. Because citrus is sensitive to a lack of zinc, I also give small doses of zinc sulfate. All of these are acidic. Even mine are elevated on bricks, used to be fine with their soil, renewed every two years, using a specific mixture of meso and micro elements designed specifically for citrus. Probably this year I've exceeded a little bit fertilizers and this may have altered proper absorption ef elements. http://www.angelfire.com/blog/herman...esio/index.htm Have a look at those pics of the lemons of mine, about magnesium deficiencies I've posted lately. Nevertheless the water is very bad in term of calcium carbonate, high Ph (8/8.5). Still wondering for the future if soluble calcium ions can be more dangerous for the lemons instead of the calcium carbonate... Thanks for answering again and wishing to continue this freindly conversation. Regards |
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