Wordnet polsko-angielski 
                         (the property of producing abundantly and sustaining vigorous and luxuriant growth
"he praised the richness of the soil"
"weeds lovely in their rankness") 
richness, rankness, prolificacy, fertility 
synonim: żyzność
synonim: urodzajność
synonim: plenność
Praktyczny słownik religijny polsko-angielski 2005, Krzysztof Czekierda
                        soil fertility