Tropical Fruit > Tropical Fruit Discussion
Alkaline Sandy Soil.
Tropicalgrower89:
Like the title says, my soil has a pH in the 7 to almost 8 range. In the high 6 range in the top layer of the soil to mid 7 range deeper into the soil around my younger pace mamey ( tree growing vigorously). High 7 range all the way through around my older pace mamey (growing very slowly). It's in the high 6's around the avocado. Low 7's around my mangoes.
My well water has a pH of 6.1 .
What should I use to help my fruit trees by lowering the pH of the soil?
138 Chelated iron?
Thank you,
FlyingFoxFruits:
--- Quote from: Tropicalgrower89 on February 19, 2012, 04:41:33 PM ---Like the title says, my soil has a pH in the 7 to almost 8 range. In the high 6 range in the top layer of the soil to mid 7 range deeper into the soil around my younger pace mamey ( tree growing vigorously). High 7 range all the way through around my older pace mamey (growing very slowly). It's in the high 6's around the avocado. Low 7's around my mangoes.
My well water has a pH of 6.1 .
What should I use to help my fruit trees by lowering the pH of the soil?
138 Chelated iron?
Thank you,
--- End quote ---
Espoma sells organic sulfur derived from gypsum.
Its what you need...that and/or Turfpro Iron formula...is what I would use...in combination...they are a force to be reckoned with.
Both being organic, and effective!
Tropicalgrower89:
--- Quote from: ASaffron on February 19, 2012, 04:53:37 PM ---
--- Quote from: Tropicalgrower89 on February 19, 2012, 04:41:33 PM ---Like the title says, my soil has a pH in the 7 to almost 8 range. In the high 6 range in the top layer of the soil to mid 7 range deeper into the soil around my younger pace mamey ( tree growing vigorously). High 7 range all the way through around my older pace mamey (growing very slowly). It's in the high 6's around the avocado. Low 7's around my mangoes.
My well water has a pH of 6.1 .
What should I use to help my fruit trees by lowering the pH of the soil?
138 Chelated iron?
Thank you,
--- End quote ---
Espoma sells organic sulfur derived from gypsum.
Its what you need...that and/or Turfpro Iron formula...is what I would use...in combination...they are a force to be reckoned with.
Both being organic, and effective!
--- End quote ---
Thanks Adam. :) The combo sounds like a good idea.
Saltcayman:
From what I have read, raising the amount of organic matter in or on top of sandy calcareous soil is key to lowering ph. A heavy mulch will also give the garden sulpher a layer to linger in rather than passing right through the root zone. Do not overdo the sulpher in any one treatment.
Peat moss, which is very acidic, can also lower ph but must be incorporated into the soil. Some people claim pine bark or pine straw mulch will also lower ph but others say it loses it's acidity when it decomposes. Dave
zands:
Tropicalgrower89 ----
Best I have learned is this\
* you can spend a lifetime trying to raise the ph of alkaline soils unless you have a few dump truck loads of straight sulfur
* not all fruit trees are bothered by alkaline soil
* mangoes are relatively immune
* citrus is more affected and same for carambola
* Iron and magnesium uptake are the major problems
* chelated iron can be used in calcerous soils where simple iron sulfate cannot.... right on soil not as a foliar
* but I'm thinking simple iron and magnesium sulfates with a soap wetting agent will do better as foliars than most of what iron and magnesium you place at ground level
* Epsom salts=magnesium sulfate
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