The key additives in Organic Choice soil: chicken manure and yucca plant extract, a wetting agent.
Scotts execs were surprised that consumers were turned off when told Organic Choice soil contained pasteurized chicken waste, which Scotts gets from a Perdue factory in Seaford, Del.
Lehmann, the lead author of the paper which is published in the journal Nature Geosciences, said that the black carbon content of soils in the study ranged from zero to 82 percent of soil organic carbon.
Organic farming scores better on biodiversity and soil composition, according to a review of studies comparing conventional and organic farming by Britain's farming ministry.
Working organic amendments such as compost into your soil will help it drain faster and retain a more even level of moisture.
The Soil Association, a charity which sets organic standards, has warned that the future of the fledgling organic industry in Wales is under threat.
After 90 days, a high-quality organic compost is ready for landscapers, farmers and gardeners to fertilize their soil.
Eco-friendly Daron "Farmer D" Joffe then buys this soil and uses it in his urban gardens and at his Organic Garden Center.
Soil samples from around the stone's socket will be analysed and any organic material found radio-carbon dated if possible.
To be included, a study had to compare organic and conventional planting across similarly-sized areas, had to report on the sample size and error margins, and had to use organic methods that complied with the guidelines of certification organisations (such as the UK's Soil Association).
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