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Indiana

Boron 14.3% 5.5 oz Copper sulfate 23% 3.5 oz per 1000sq ft is what my soil test recomended.

Ok I found 100% copper sulfate and 100% boric acid How much of each should use?? Any math wizards out there??

After some research my fruit trees and strawberries do show a boron deficiency so i do think i need it.
Steve

Steve

4/6/2004 2:24:44 PM

Ljubljana, Slovenia

I use metric system so I have no idea ;-)
I have experienced that boron may be a problem in tomatoes for example. My father brought an out-of-date boron acid from the lab and it worked.. One handful for 20 square meters.

Be careful with copper though. I have a copper covered “tool house” and NOTHING grows where the water from the roof is draining.

Jernej

4/11/2004 12:44:10 PM

Indiana

Thanks for th warning on the copper. I came up with the following ammounts copper .805 0z pe 1000sq ft
boron .786 oz per 1000sq ft hope this stuff disolves well in water because i dont know how to spread that small of an amount any other way. My formula was 100/14.3=6.99 5.5oz/6.99=.786oz(boron) and 100/23=4.3 3.5 oz/4.3=.805oz(copper) sombody pleas tell me if im wrong.
Steve

4/11/2004 2:00:15 PM