Black earth Source: R Dudal
Sandy soil Source: J Herbauts
Acid loamy soil Source: R Dudal
Non-acid loamy soil Source: R Dudal
Clayey soil Source: R Dudal
Shallow and stony soil Source: J Herbauts
Semi-arid soil Source: R Dudal
salt-affected soil Source: R Dudal
Imperfectly drained soil Source: J Herbants