Comments on: Use of permaculture under salinity and drought conditions http://permaculture.org.au/2005/02/01/use-of-permaculture-under-salinity-and-drought-conditions/ Permaculture News, Commentary and Worldwide Projects. Thu, 09 Feb 2012 08:48:25 +0000 http://wordpress.org/?v=2.9.2 hourly 1 By: lori kulhavy http://permaculture.org.au/2005/02/01/use-of-permaculture-under-salinity-and-drought-conditions/#comment-50412 lori kulhavy Tue, 20 Jul 2010 23:25:36 +0000 http://permaculture.org.au/?p=258#comment-50412 Really excellent information and project. Yes it can be done. Thanks. Really excellent information and project. Yes it can be done. Thanks.

]]> By: Thomas Fischbacher http://permaculture.org.au/2005/02/01/use-of-permaculture-under-salinity-and-drought-conditions/#comment-38680 Thomas Fischbacher Sat, 28 Nov 2009 18:06:48 +0000 http://permaculture.org.au/?p=258#comment-38680 EC = Electrical Conductivity (in deci-Siemens per meter: EC=1 means that a "water wire" of cross-section 1 cm and length 1 cm has a resistivity of R = 1/S = 1/(S_spec * A / L) = 1/(0.1 1/(Ohm m) * (0.01m)^2 / 0.01m) = 1 kilo-Ohm. EC=2 would hence correspond to a resistivity of 0.5 kOhm for the same "water wire". This basically is a simple measure of the concentration of electrically charged ions in water, hence salinity. OM% = Organic Matter Content, in Per-Cent SAR = Sodium Absorption Ratio, that's a standard measure of sodicity. The definition is related to the law of mass action. You can think of it as the quotient of the sodium concentration and the square root of the alkaline earth metal concentration. EC = Electrical Conductivity (in deci-Siemens per meter:
EC=1 means that a “water wire” of cross-section 1 cm and length 1 cm has a resistivity of

R = 1/S = 1/(S_spec * A / L) = 1/(0.1 1/(Ohm m) * (0.01m)^2 / 0.01m) = 1 kilo-Ohm.

EC=2 would hence correspond to a resistivity of 0.5 kOhm for
the same “water wire”. This basically is a simple measure of the concentration of electrically charged ions in water, hence salinity.

OM% = Organic Matter Content, in Per-Cent

SAR = Sodium Absorption Ratio, that’s a standard measure of sodicity. The definition is related to the law of mass action. You can think of it as the quotient of the sodium concentration and the square root of the alkaline earth metal concentration.

]]> By: Adam http://permaculture.org.au/2005/02/01/use-of-permaculture-under-salinity-and-drought-conditions/#comment-38677 Adam Sat, 28 Nov 2009 13:09:25 +0000 http://permaculture.org.au/?p=258#comment-38677 Dear PRI, pardon my ignorance on this issue, but in table 6 what does EC (dS/m), SAR and OM% stand for, Many Thanks, Adam Dear PRI,

pardon my ignorance on this issue, but in table 6 what does EC (dS/m), SAR and OM% stand for,

Many Thanks,
Adam

]]> By: Thomas Fischbacher http://permaculture.org.au/2005/02/01/use-of-permaculture-under-salinity-and-drought-conditions/#comment-28959 Thomas Fischbacher Wed, 24 Dec 2008 10:50:53 +0000 http://permaculture.org.au/?p=258#comment-28959 The Google maps satellite image of the site can be found here: http://preview.tinyurl.com/9wonx8 Is it possible you down-unders got the "N/S" labeling wrong on the map? The Google maps satellite image of the site can be found here:

http://preview.tinyurl.com/9wonx8

Is it possible you down-unders got the “N/S” labeling wrong on the map?

]]> By: Sue http://permaculture.org.au/2005/02/01/use-of-permaculture-under-salinity-and-drought-conditions/#comment-27069 Sue Thu, 09 Oct 2008 03:58:16 +0000 http://permaculture.org.au/?p=258#comment-27069 This is a great success story and one that provides enormous encouragement. Well Done. This is a great success story and one that provides enormous encouragement. Well Done.

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