General cropping = D01 (common wheat and spelt) + D02 (durum wheat) + D03 (rye) + D04 (barley) + D05 (oats) + D06 (grain maize) + D07 (rice) + D08 (other cereals) + D09 (dried vegetables) + D10 (potatoes) + D11 (sugar beet) + D12 (forage roots and tubers) + D13 (industrial plants) + D14a (fresh vegetables, melons, strawberries, open field) + D18 (forage plants) + D19 (arable land seeds and seedlings) + D20 (other arable land crops) + I01 (successive secondary non-fodder crops)
