To: North American Fruit Explorers <nafex@lists.ibiblio.org>
Subject: Re: [NAFEX] Zinc -pecans-hickories?
Date: Mon, 28 Feb 2005 09:40:48 -0800 (PST)
Would this also hold for shagbark hickories in zones 5 to 4?
Tanis Cuff, s.WI, where shagbarks are weeds and pecans are pipe-dreams
--- Topgun wrote:
> I worked with zinc and zinc sulphate on pecans for 25 years. We recommended
> 5 lbs
> of zinc sulphate for pecan trees 20 yrs old or older on sandy soils and 10
> lbs per
> tree on clay solis. On younger pecan trees, 1/4 th lb per inch of trunk
> diameter.
> This does not work on alkaline soils however. The zinc and calcium react
> forming
> zinc carbonate which is insoluble. A little bit in a compost pile should be
> plenty
> as stated in a previous post.
>
> R. D. O'Barr
> Zone 7
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