Barney: I thunk wrong then
prob not because russian does have those sounds...........not quite as harsh as in Polish but they are there.
etymologia.org/wiki/S%C5%82ownik+etymologiczny/r%C4%99dzina
rędzina, rędzinny, w XVI i XVII wieku ogólne, o 'glebie urodzajnej'; serb. rudina, 'niwa', przymiotnik rud, o włosach: ruda kosa, 'kędziory', ruditi kosu, 'kędzierzawić', ruda, rudica, 'zbita wełna'; porównaj rdest (7).There are a few places in Poland called 'Rędziny'
en.wikipedia.org/wiki/R%C4%99dziny
and there's a surname Rędziński.
Barney, who were those Russians that invented soil science? The only possible names that spring to my mind are Michurin and Lysenko.