Mulders Chart (forum)

amanda starts with ...
I don't know if anyone is interested - but this is a great piece of soil chemistry work by Professor Mulder (a soil scientist)
The fat arrows = stimulation and the skinny arrows = antagonism.

It's not complete, unfortunately, but from it you can see that if you add too much of certain things to your soil - you can induce a deficiency in something else (eg: too much calcium can induce iron deficiency - in the plant not the soil)= antagonism. Calcium induced iron chlorosis is not uncommon for those on limestone soils.

You may also be able to improve the availability of one element by adding a little of another = stimulation.

It doesn't pay to dwell on it too closely (it does my head in!) - but it's good to be aware that what you add can have consequences you may not be aware of I guess?
Pictures - Click to enlarge

Picture: 1

Time: 13th January 2010 11:55am

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Original Post was last edited: 13th January 2010 12:04pm

About the Author amanda19
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Diana says...
Hi Amanda,

I like this diagram. What do the bi-directional arrows with fat lines mean between the phosphorus and calcium mean, though?

Time: 14th January 2010 5:09pm

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Diana says...
I meant phosphorus and magnesium (couldn't quite see the words on the screen while writing and had to remember- bad after 4pm late in the week).

Diana.

Time: 14th January 2010 5:10pm

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Wayne says...
Waaaaaaaaaaay over the top of my head

Time: 14th January 2010 6:01pm

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Tabs says...
The bi-direction arrows mean that too much phosphorus will antagonize magnesium and too much magnesium will antagonize phosphorus. A balance must be kept. The same goes for magnesium and potassium.

Time: 17th January 2010 2:05pm

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amanda says...
Hi - no - it means they are mutually stimulative. Magnesium is a carrier for phorphorus.
The fat arrows = stimulation
skinny arrows = antagonism.

(source: "Organic Gardening by Peter Bennett)

Time: 17th January 2010 2:10pm

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kert says...
Fascinating ;now what was it you said about magnetised water?

Time: 18th January 2010 10:17am

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amanda says...
Hi Kert, you can't magnetise water..and here I was thinking you knew everything...

Time: 18th January 2010 10:50am

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khaled says...
please what is the source of this diagram (book name)

Time: 3rd March 2010 8:59pm

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amanda says...
Khaled - see post on 17th.

Time: 4th March 2010 12:15pm

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speedy says...
'Australia and New Zealand- ORGANIC GARDENING' (upper case is main title- not me shouting :-)
Peter Bennett
-5th edition Child & Associates Publishing,Frenches Forest, NSW, Aust. (1989)
first published 1979.
ISBN 0 86777 270 0
there have been recent revisions of this book

Mulder's chart is also available in other books addressing nutrient interactions in soil chemistry

Time: 4th March 2010 11:47pm

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Khaled says...
thanks Speedy
but have you any link to download the pdf version of this book

Time: 6th March 2010 10:49pm

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speedy says...
I dont know where to get pdf of the book.
but here's the author's website in SA
http://www.peterbennettorganics.com.au/about_us.htm#
unfortunately it seem that the book is temporarily out of print.

Time: 7th March 2010 12:17am

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khaled says...
than you speedy
you are a good friend

Time: 7th March 2010 7:31pm

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khaled says...
can I ask you another question ?
have you a good table for the compatibility of fertilizer to mixing (with the source name)

Time: 7th March 2010 7:36pm

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