We also found that -catechin was more toxic in some soils than would be estimated from its effects in solutions in vitro.
My theory -- unproven -- is that over the last 60 years or so our soil has got much more toxic and less fertile -- even the soil that organic produce is grown in.
One of the most significant is that insect or weed resistance will render genetically modified crops ineffective and force farmers to return to more toxic chemicals or plowing that causes soil erosion.
However, the higher-brominated PBDEs congeners (hepta-BDEs to deca-BDEs) could be degraded/transformed to lower-brominated PBDEs congeners which seems to be more toxic in various environments such as soil, aquatic ecosystems (Huang et al. 2014).
San Joaquin Valley soil will become more toxic because of irrigation runoff and imported salty water.
This was the fact that heptachlor, after a short period in the tissues of animals or plants or in the soil, assumes a considerably more toxic form, known as heptachlor epoxide.
Once it finds its way back to land or water, bacteria in the soil can convert it into its more toxic cousin, methylmercury.
As a result, more toxic chemicals are released into our air, water and soil, and greenhouse gases are created that deplete our water and fossil fuel energy resources.
Therefore, dust originating from urban soils contaminated by anthropogenic Pb is more toxic than naturally occurring Pb dust.
Although Cu is an essential micronutrient for plant growth, it can be more toxic than nonessential Pb to biota when extraneous Cu is present in soil environments.
