Since 1958 the Scandinavian Research Circle has completed several farming experiments. Two of the largest were called the K-trial and the UJ-trial.
The K-trial was conducted from 1958 to 1990. The field trial compared how different types of fertilization affect crop quality.
The UJ-trial was performed in collaboration with the present Swedish University of Agricultural Sciences in Uppsala. The project was carried out between the years 1971 to 1979 and compared conventional and biodynamic cropping systems.
A recent scientific paper has used modern multivariate methods to evaluate the results from the two field trials. Click on this link and you can download this scientific paper directly from the journal’s website
A second recent article compared the quality of carrots grown in a long term field experiment on Skilleby farm, situated in Sweden south of Stockholm.
Interestingly, differences in soil conditions had stronger impact on certain quality parameters of the carrots than what various manuring strategies had1
Where in the field the carrots were grown thus had greater importance than the manuring system applied for 15 years!
Good soil conditions, in the form of a good supply of phosphorus, as well as higher pH in the soil, gave carrots with lower levels of certain important health-promoting substances (polyacetylenes). Perhaps the old claim, that an upbringing under more frugal conditions sometimes is good for your health in the long run, is not so wrong after all!
Click on this link and you can download this scientific paper directly from the journal’s website