Iron gardening tools versus copper gardening tools: What we were never taught
(cultivateelevate.com)
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https://en.m.wikipedia.org/wiki/Copper_toxicity
I'd be careful on erratic claims. Copper is a hazardous substance in larger quainties. Although traces of it are good for the body. But copper mines are known to have a big run off environmentally. https://old.danwatch.dk/undersogelseskapitel/impacts-of-copper-mining-on-people-and-nature/
There is the price by comparison, and it is more precious by comparison to alloys. Alloys are used today. Since this article.
Most copper tools are in fact bronze, copper plus tin makes the alloy bronze, harder wearing. It can prevent the slugs and snails on your lettuces. No why, they feed on irons, like ourselves. Of course it carries carry toxicity concerns, where neurological disorders like Parkinsons can developed from it. Bronze is a bigger offender of toxicity. As a metal it gets diseased. Where the metal corrodes and the green corrosion spreads to other metals.
Laugh and these articles. It was the wood plough on reading. Turkey had copper since the cradle of civilization. But they were still using the wooden ploughs. Suddenly the inventor needed to fix onto the tractors, using copper, bronze. Because it was supposedly so much better for something. But I cannot completely think of what?
Thanks for your comment :)
I have supplemented copper recently and found huge health/skin/hair/nail benefits. So it is individual, too.
We ingest trace quantities, like zinc offer benefits. But I am wary of it.
I was a stupid little shit of a kid. I had a goldfish, it survived my cat, my cat knocked over my goldfish bowl and the little fish was on the floor for hours and hours. It didn't survive me putting copper in its fishbowl. I put a few copper coins into it to give it more colour, and it died a few days later. The copper went green immediately. I was so sick and sad for the poor fish. It survived the damn cat, out of the bowl on the ground for hours. But my stupidity, innocent of course, was fatal.
I am wary of copper. It has concerns. Yes it is a supplement in trace quantities, we ingest it in our water. There are copper supplements, like zinc. You could even beat the breathalyser test by copper oxide.
But that fish, it was poisoning. Read the link on its mining.