Quote:
Originally Posted by bencelest
Talking about the pH meter. I got mine out because I have 3 citrus planted on the ground whose leaves are very yellow all the leaves. I thought it was nitrogen difficiency but when I sampled the soil, the soil were very acid 5.2, 5.4, 4.9.
Naturally I bought some prilled dolomite lime at garden store and add it into the soil. I'll check the pH and the leaves every 4 days or so if there is any improvement.
The tempt maybe a factor also since we just got over the winter. But I'll keep an eye on them.
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I always thought that yellowing of the leaves was caused by Iron and/or Nitrogen deficiency. My plants used to have that tendency. A regular regimen of "Ironite" usually cured the yellowing. If you're using a lot of wood chip mulch, it could be taking up a lot of the nitrogen from your soil, too.
Or, it might be caused by your water supply, too. Especially, if you have a water softener for your entire house supply system.
I would have your pH meter checked for accuracy before adding Lime to your soil. Yellowing of the leaves will be aggravated if you add more lime to neutralize the acidity. More nurserymen will recommend making your soil more acid when you have yellowing of the leaves of your tree. The will recommend using "Miracid" to get your leaves to turn green. Since your pH readings are showing an over acidity in your soil, but then your leaves are yellowing, this leads me to believe that your pH meter may need to be recalibrated, because the readings contradict the symptoms of your plant. (If your meter can be recalibrated.) One thing you could do is check the your tap water with your meter and see if your meter will read it as in the neutral range.