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Thanks Frans,<br>
<br>
this is what we know and experience every day. Mineral blockage due
to high lime.<br>
<br>
Do you know how much humus it takes to relly change soil ph in a
measurable way?<br>
<br>
Ginourmous amounts if we talk about 8.0, leave alone 8.5 !<br>
<br>
I wondered if any "doable" amounts of charcoal can help.<br>
<br>
Of course science is important, Frank, but when it is about very
complex and interactive matters, practical experience and empirical,
intuitive investigation is often faster -and cheaper.<br>
<br>
Good farmers have very critical eyes and allthough they perhaps
cannot explain a phaenomenum in a scientific language, they very
well understand how to work with it. And this is what is important
to them.<br>
<br>
Rolf<br>
<br>
<br>
<br>
Am 15.12.2012 22:22, schrieb Frans Peeters:
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<p> <span> Dear stovers,& Rolf , </span> </p>
<p> <span> </span> </p>
<p> <span> Basic soil needs
humus to bring pH 8,5 to 6,5 </span> </p>
<p> <span>Basic soil by Ca exess has lack of Mg take up to form
Chlorofil
leef green .Result yellow leaves . </span> </p>
<p> <span>Char has no chemical effect . </span> </p>
<p> <span>Sometimes water and minerals into the char are
usefull at pH
5,5 -7. </span> </p>
<p> <span>Basic soil makes trace minerals unsoluble and not
avaiable
to take up . </span> </p>
<p> <span>Zn and Se can profit of basic soil . </span> </p>
<p> <span>Too acid under pH 5 dissoves Aluminium from clay ,a
plant
killer . </span> </p>
<p> <span> </span> </p>
<p> <span>Regards </span> </p>
<p> <span>Frans </span> </p>
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