For the main crop, if you have room, cut good seed to one or two eyes, leaving as much of the tuber as possible to each piece, and plant thirteen inches apart in rows three feet apart. Cultivate deeply until the plants are eight to ten inches high and then shallow but frequently. As the vines begin to spread, hill up moderately, making a broad, low ridge. Handle potato-bugs and blight as directed in Chapter XIII. For harvesting see Chapter XIV.
While big crops may be grown on heavy soils, the quality will be very much better on sandy, well drained soils. Planting on well rotted sod, or after green manuring, such as clover or rye, will also improve the looks and quality of the crop. Like onions, they need a high percentage of potash in manures or fertilizers used; this may be given in sulphate of potash. Avoid planting on ground enriched with fresh barnyard manure or immediately after a dressing of lime.
Salsify:—The "vegetable oyster," or salsify, is to my taste the most delicious root vegetable grown. It is handled practically in the same way as the parsnip, but needs, if possible, ground even more carefully prepared, in order to keep the main root from sprangling. If a fine light soil cannot be had for planting, it will pay to hoe or hand-plow furrows where the drills are to be—not many will be needed, and put in specially prepared soil, in which the seed may get a good start.
Radish:—To be of good crisp quality, it is essential with radishes to grow them just as quickly as possible. The soil should be rather sandy and not rich in fresh manure or other nitrogenous fertilizers, as this tends to produce an undesirable amount of leaves at the expense of the root. If the ground is at all dry give a thorough wetting after planting, which may be on the surface, as the seeds germinate so quickly that they will be up before the soil has time to crust over. Gypsum or land-plaster, sown on white and worked into the soil, will improve both crop and quality. They are easily raised under glass, in autumn or spring in frames, requiring only forty to fifty degrees at night. It is well to plant in the hotbed, after a crop of lettuce. Or sow as a double crop, as suggested under Carrots. For outside crops, sow every ten days or two weeks.
Turnip:—While turnips will thrive well on almost any soil, the quality—which is somewhat questionable at the best—will be much better on sandy or even gravelly soil. Avoid fresh manures as much as possible, as the turnip is especially susceptible to scab and worms. They are best when quite small and for the home table a succession of sowing, only a few at a time, will give the best results.
LEAF CROPS
Under leaf crops are considered also those of which the stalk or the flower heads form the edible portion, such as celery and cauliflower.
Asparagus Brussels Sprouts Cabbage
Cauliflower Celery Endive
Kale Lettuce Parsley
Rhubarb Spinach
The quality of all these will depend largely upon growing them rapidly and without check from the seed-bed to the table. They are all great nitrogen-consumers and therefore take kindly to liberal supplies of yard manure, which is high in nitrogen. For celery the manure is best applied to some preceding crop, such as early cabbage. The others will take it "straight." Most of these plants are best started under glass or in the seed-bed and transplanted later to permanent positions. They will all be helped greatly by a top-dressing of nitrate of soda, worked into the soil as soon as they have become established. This, if it fails to produce the dark green healthy growth characteristic of its presence, should be followed by a second application after two or three weeks—care being taken, of course, to use it with reason and restraint, as directed in Chapter VI.
Another method of growing good cabbages and similar plants, where the ground is not sufficiently rich to carry the crop through, is to "manure in the hill," either yard or some concentrated manure being used. If yard manure, incorporate a good forkful with the soil where each plant is to go. (If any considerable number are being set, it will of course be covered in a furrow—first being trampled down, with the plow). Another way, sure of producing results, and not inconvenient for a few hundred plants, is to mark out the piece, dig out with a spade or hoe a hole some five inches deep at each mark, dilute poultry manure in an old pail until about the consistency of thick mud, and put a little less than half a trowelful in each hole. Mix with the soil and cover, marking the spot with the back of the hoe, and then set the plants. By this method, followed by a top-dressing of nitrate of soda, I have repeatedly grown fine cabbage, cauliflower, lettuce and sprouts. Cotton-seed meal is also very valuable for manuring in the hill—about a handful to a plant, as it is rich in nitrogen and rapidly decomposes.