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- From: "Lawrence F. London, Jr." <lfl@intrex.net>
- To: Permaculture Plant Database <pcplantdb@lists.ibiblio.org>
- Subject: [pcplantdb] crop rotation
- Date: Sun, 12 Dec 2004 15:42:44 -0800
This clearly shows how complex crop rotation issues can become:
-------- Original Message --------
Subject: Re: [SANET-MG] Loss of minerals
Date: Sun, 12 Dec 2004 13:08:28 -0500
From: Joel Gruver <jgruv@HOTMAIL.COM>
To: SANET-MG@LISTS.IFAS.UFL.EDU
http://www.sare.org/sanet-mg/archives/html-home/40-html/0441.html
The Soil Quality issue Volume 7 (1&2) of the American Journal of
Alternative Agriculture included an article by Sharon Hornick titled
"Factors effecting Nutritional Quality of Plants". This article is a good
foundation for starting to think about the impact of
inherent soil properties (e.g. texture, clay mineralogy), variable
soil properties (e.g. organic matter content) and crop/soil
management practices (e.g. fertilization, tillage...) on crop nutritional
quality.
A more recent article in the same journal Volume 12 (2) titled
"Suppression of VAM fungi and micronutrient uptake by low-level P
fertilization in long-term wheat rotations" by Clapperton, M. J., Janzen,
H.H. and A.M. Johnston provides a clear example of how modification of
soil ecology associated from P fertilization can reduce the micronutrient
content of wheat.
--
L.F.London
lfl@intrex.net
http://market-farming.com
http://www.ibiblio.org/ecolandtech
- [pcplantdb] crop rotation, Lawrence F. London, Jr., 12/12/2004
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