11. The agricultural land is almost exclusively used for arable farming . 12. Gradually surrendering to basic arable farming changes, the Southdown became largely a grassland breed. 13. The soil cover was boulder clay, unsuitable for arable farming . 14. The reference to 8 plough teams implies that arable farming was already well established. 15. Mixed arable farming is still carried out around the village. 16. Horticulture, arable farming and plantation forestry generally have a lesser impact than dairy farming. 17. Many more efficient drainage systems have led the way to mixed and arable farming . 18. During the medieval period, the primary source of employment was agriculture, mainly arable farming . 19. Older disused gravel pits form useful nature reserves and amenity areas at nearby arable farming . 20. It is rustic and well adapted to exploit steep terrain not suitable for arable farming .