The Ciney-Dinant-Philippeville basin is very favourable to growing rapeseed, specifically due to its soil which is said to be 'poor'. The presence of stones and clay allows the rapeseed to grow extremely well, unlike vegetable crops. The Condroz soil is therefore perfect for rapeseed, but rapeseed also does it good, as its presence in the soil from September to June restricts the growth of weeds. In addition, rapeseed cultivation increases the yield of the cereals that are planted after it. It interrupts the disease cycles specific to these cereals, with the yield of wheat after rapeseed thought to be 10% higher than the yield of wheat after wheat.