pH LIST OF OPTIMUM pH INDEX FOR SOME FARM PRODUCES 56 rosebay, lily of the valley, azalea, rose , 56.6 rise-plant, potato, foxtail millet, corn, peppermint, radish, 68 spinach, kidney bean, lettuce, onion, cucumber, carrot tomato, turnip, egg , plant , celery, burdock, cabbage, chrysanthmum, dahlia , narcissus, tulip, carnation