In many places turnips and clover were still unknown or ignored.
Turnips are grown principally in the central provinces as an alternative crop to wheat.
The cereal crops (wheat, barley, oats, rye, maize); the cruciferous crops (turnips, cabbage, kale, rape, mustard); the solanaceous crops (potatoes); the chenopodiaceous crops (mangels, sugar-beets), and other non-leguminous crops have, so far as is known, no such power, and are therefore more or less benefited by the direct application of nitrogenous manures.
Forage Crops.The mangold-wurzel, occupying four times the acreage of swedes and turnips, is by far the chief root-crop in France.
Frank has claimed to have found oats, buckbeans, spurry, turnips, mustard, potatoes and Norway maples exercising it; Nobbe and others have imputed its possession to Elaeagnus.