So I am currently researching my paternal line which came from Bohemia (today Czech Republic) and in one church record I found an interesting table on crop productivity starting with the year 1732.
The crops listed are from top to bottom:
Rye (I guess, they call it "Korn" which is generic for grain)
The first column is always the amount sowed (not sure about the unit); the second column is the amount threshed.
So it seems that in some years you harvested about the same amount of peas as you put into the ground. Oats seem to have been the most productive with harvests about 5 times the amount of the input.
I think this gives an interesting picture. I have no idea how the relation is today, I guess much higher, and I also guess there are not many deviations from the average.
ETA: I have found another table from the 1800s and there they added a sixth crop vetch. I guess it was used as fodder?
I have also read a book on a different town of my ancestors which is fascinating to read regarding laws what to plant in which quantities and where it was allowed to plant in which area. When I have some time I might write about it as well.
I am only one, but still I am one. I cannot do everything, but still I can do something; and because I cannot do everything, I will not refuse to do something that I can do. (E.E.Hale)
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