The cause of stump foot cannot, therefore, be found in the poverty of the soil, either from want of manure or its having been rendered effete from over cropping. It is evident that by long cultivation soils gradually have diffused through them something that proves inimical to the disease that produces stump foot. I will suggest as probable that the protection is afforded by the presence of some alkali that old gardens are constantly acquiring through house waste which is always finding its way there, particularly the slops from the sink, which abound in potash. This is rendered further probable from the fact given by Mr. Peter Henderson, that, on soils in this vicinity, naturally abounding in lime, cabbage can be raised year following year with almost immunity from stump foot. He ascribes this to the effects of lime in the soil derived from marine shells, and recommends that lime from bones be used to secure the same protection; but the lime that enters into the composition of marine shells is for the most part carbonate of lime, whereas the greater portion of that which enters into the composition of bones is phosphate of lime. Common air-slaked lime is almost pure carbonate of lime, and hence comes nearer to the composition of marine shells than lime from bones, and, being much cheaper, would appear to be preferable.
An able farmer told me that by using wood ashes liberally he could follow with cabbage the next season on the same piece. One experiment of my own in this direction did not prove successful, where ashes at the rate of two hundred bushels to the acre were used; and I have an impression that I have read of a like want of success after quite liberal applications of lime. In a more recent experiment, on a gravelly loam on one of my seed farms in Middleton, Mass., where two hundred bushels of unleached ashes were used per acre, three-fourths broadcast, I have had complete success, raising as good a crop as I ever grew the second year on the same land, without a single stump foot on half an acre. Still, it remains evident, I think, that nature prevents stump foot by the diffusing of alkalies through the soil, and I mistrust that the reason why we sometimes fail with the same remedies is that we have them mixed, rather than intimately combined, with the particles of soil.
The roots of young plants are sometimes attacked by a maggot, though there is no club root present. A remedy for this is said to be in the burying of a small piece of bi-sulphide of carbon within a few inches of the diseased plant. I have never tried it, but know that there is no better insecticide.
As I have stated under another head, an attack of club foot is almost sure to follow the use of pure hog manure, whether it be used broadcast or in the hill. About ten years ago I ventured to use hog manure nearly pure, spread broadcast and ploughed in. Stump foot soon showed itself. I cultivated and hoed the cabbage thoroughly; then, as they still appeared sickly, I had the entire piece thoroughly dug over with a six-tined fork, pushing it as deep or deeper into the soil than the plough had gone, to bring up the manure to the surface; but all was of no use; I lost the entire crop. Yet, on another occasion, stable manure on which hogs had been kept at the rate of two hogs to each animal, gave me one of the finest lots of cabbage I ever raised.
CARE OF THE GROWING CROP.
As soon as the young plants are large enough to be seen with the naked eye, in with the cultivator and go and return once in each row, being careful not to have any lumps of earth cover the plants. Follow the cultivator immediately with the hoe, loosening the soil about the hills. The old rule with farmers is to cultivate and hoe cabbage three times during their growth, and it is a rule that works very well where the crop is in good growing condition; but if the manure is deficient, the soil bakes, or the plants show signs of disease, then cultivate and hoe once or twice extra. "Hoe cabbage when wet," is another farmer's axiom. In a small garden patch the soil may be stirred among the plants as often as may be convenient: it can do no harm; cabbages relish tending, though it is not necessary to do this every day, as one enthusiastic cultivator evidently thought, who declared that, by hoeing his cabbages every morning, he had succeeded in raising capital heads.
If a season of drouth occurs when the cabbages have begun to head, the heads will harden prematurely; and then should a heavy rain fall, they will start to make a new growth, and the consequence will be many of them will split. Split or bursted cabbage are a source of great loss to the farmer, and this should be carefully guarded against by going frequently over the piece when the heads are setting, and starting every cabbage that appears to be about mature. A stout-pronged potato hoe applied just under the leaves, and a pull given sufficient to start the roots on one side, will accomplish what is needed. If cabbage that have once been started seem still inclined to burst, start the roots on the other side. Instead of a hoe they may be pushed over with the foot, or with the hand. Frequently, heads that are thus started will grow to double the size they had attained when about to burst. There is a marked difference in this habit in different varieties of cabbage. I find that the Hard-heading is less inclined to burst its head than any of the kinds I raise.