Subject: Re: Sulphate of Potash From: Greg Johnson <gjohnson@au.infogrames.com> Organization: Ye 'Ol Disorganized NNTPCache groupie Date: Mon, 21 Feb 00 09:27:10 Message-ID: <MOD$000220.4775@rec.gardens.ecosystems> References: <MOD$000210.20485@rec.gardens.ecosystems>
Thanks for the info. I'll seek out the fish meal as a substitute.
Bill Robinson wrote:
> Greg Johnson wants to make a balanced fertilizer by spiking > bone meal and blood meal with potassium sulphate. He asks if > potassium sulfate is safe and organic. > > Commercial potassium sulfate is made by reacting sulfuric > acid with potash. This material is not organic to say the > least but it is not particularly destructive of the environment. > Potassium sulfate is used in agriculture to correct potassium > deficient soil. It is a salt and at conventional levels it > is beneficial to plants. > > Potassium, like all of the other mineral nutrients, is an > essential nutrient at one level but is toxic at higher > concentrations. It doesn't take too much potassium sulfate > to burn the roots. > > The thing I don't like about the mix of blood meal plus bone > meal plus potassium sulfate is that it leaves out the needed > trace elements. How's about adding generous portions of fish > meal or fish emulsion - stuff from the ocean has got it all. > > Bill > > --------------------------------------------------------- > > The rec.gardens.ecosystems FAQ, course and archive are available at > http://metalab.unc.edu/rge > > submissions can be mailed to: ecosys-submit@metalab.unc.edu > the moderators can be contacted at: ecosys-admin@metalab.unc.edu > > Please note that crossposts are automatically rejected