Not dead yet!
Well-Known Member
This is a fascinating article on the nutritive value of modern foods and how it is changing, and why.
http://www.politico.com/agenda/story/2017/09/13/food-nutrients-carbon-dioxide-000511
Apparently, as CO2 rises in the atmosphere, plants make more sugar, but nutrient content goes down. It literally turns fruits and veggies into carby junk food. Well that hasn't happened yet, but there is a measurable decrease in minerals. Two reasons are given in the article:
1. We select varieties that produce more sugar.
2. Global CO2 in ambient air is rising.
And I would add:
3. If organic farmers are not required to use volcanic or rock dust soil amendments (they're not, at least not by the USDA), the poverty of the depleted soils is likely to add to the problem.
When I grow veggies at home, the one expensive amendment I never compromise on is volcanic topsoil, even volcanic ash. If it's horribly expensive one year, I might use rock dust. For more on how to remineralize soil: https://www.growingagreenerworld.com/rock-minerals-as-soil-amendments/
It might be interesting to come up with a "how to grow your own veggies" guide/resource. I realize many people don't have the energy, but gardens tend to pull in outside help, neighborhood kids, and such. In my experience, people love a garden. The heavy work like turning the soil in the spring, has to be paid labor, though.
http://www.politico.com/agenda/story/2017/09/13/food-nutrients-carbon-dioxide-000511
Apparently, as CO2 rises in the atmosphere, plants make more sugar, but nutrient content goes down. It literally turns fruits and veggies into carby junk food. Well that hasn't happened yet, but there is a measurable decrease in minerals. Two reasons are given in the article:
1. We select varieties that produce more sugar.
2. Global CO2 in ambient air is rising.
And I would add:
3. If organic farmers are not required to use volcanic or rock dust soil amendments (they're not, at least not by the USDA), the poverty of the depleted soils is likely to add to the problem.
When I grow veggies at home, the one expensive amendment I never compromise on is volcanic topsoil, even volcanic ash. If it's horribly expensive one year, I might use rock dust. For more on how to remineralize soil: https://www.growingagreenerworld.com/rock-minerals-as-soil-amendments/
It might be interesting to come up with a "how to grow your own veggies" guide/resource. I realize many people don't have the energy, but gardens tend to pull in outside help, neighborhood kids, and such. In my experience, people love a garden. The heavy work like turning the soil in the spring, has to be paid labor, though.