Part 19

_Seedling Plants._--Two types of plants are used for forcing purposes--seedling plants and cutting plants. The former are, of course, seedlings grown from seed especially sown for the purpose of raising plants to be grown in a greenhouse. It is customary in the latitude of New York and northward to sow the seed for a forcing crop of tomatoes in the month of August. The young seedling plants, as soon as they develop the first true leaves, are then transplanted from the seed bed to small pots, preferably 3-inch pots. They are planted deeply at this time and are kept growing rapidly but not sufficiently to produce a soft, succulent growth. As soon as the 3-inch pots are filled with roots the plants are shifted to 4-inch pots, and when the plants have attained a height of 12 or 15 inches, and have developed their first blossoms, they are usually placed on the benches of the greenhouse, where they are to produce their crop. The plants are then set 15 or 18 inches apart each way in a soil prepared as previously described.

_Cutting Plants._--Cuttings should be taken from strong, healthy, vigorous-growing plants in the field, and placed in the cutting bed about the last of August, where they will quickly take root. As soon as the roots have developed to a length of from one-half to 1 inch the young plants are shifted to 3 or 4 inch pots, where they are allowed to develop until the blossom buds are well formed or the blossoms have expanded, when they should be planted on the bench where they are to mature their crop, in like manner as noted for seedling plants.

_Pollination._--In the field, where the tomato plants are exposed to the action of wind and to the visits of insects, no special attention is necessary in order to secure the pollination of the flowers and the setting of the fruits. Under the conditions existing in a greenhouse, however, it is necessary to artificially pollinate the flowers of the tomato; otherwise only a very small percentage of fruits will set and the object of the work will be defeated. It is therefore necessary to allow the temperature of the house to become quite high in the middle of the day on bright sunshiny days while the plants are in bloom, and to pass through the house at this time with a little stick, 18 inches or 2 feet in length, with which to strike the supporting strings or wires and thus to set the plants in motion and liberate the pollen and cause it to fertilize the flowers. A more satisfactory way, however, is to use a watch glass, 1-1/4 or 1-12 inches in diameter, embedded in putty, at the end of a handle composed of a light material, preferably white pine, which shall be 12 or 18 inches long. Grasp this spatula in the left hand and, with a light pine stick of equal length in the right hand, pass through the house, tapping each open flower lightly with the wand, at the same time holding the watch glass under the flowers to catch the pollen. Before removing the watch glass from this position lift it sufficiently to cause the stigma of the flower to dip into the pollen contained in the glass. By carefully going through the house from day to day during the blooming period nearly 90 per cent of the blossoms which develop can be caused to set. During dark, cloudy, stormy weather, however, a smaller percentage of plants will be fertilized than during bright, comparatively dry weather. The conditions in the greenhouse can not be modified so as to entirely overcome the adverse conditions existing on the outside, although with care much can be done in this direction.

_Manuring._--It is desirable to keep plants of the tomato which are designed for forcing growing at a moderately rapid rate throughout the whole forcing period. Growth should be strong and robust at all times, yet slow enough to produce close-jointed plants which bear their fruit clusters at near intervals. There is considerable difference in varieties of tomatoes in this respect, and those which naturally bear their fruit clusters close together should be selected for forcing purposes. The manuring of the plants should, therefore, take a form which will be conducive to this strong, vigorous growth, yet not sufficiently heavy to produce plants which run to wood at the expense of fruit bearing.

_Ventilating and Watering._--If careful attention is given to keeping the plants in a healthy condition by never allowing them to suffer from overwatering or from becoming too dry, and if sufficient ventilation is given without allowing draughts of cold air upon the plants, much can be done to prevent the development of mildew. If the plants are to be sprayed it should be done once a week or once in ten days, and then only in the mornings of bright days. Ordinarily, however, the atmosphere of the house should be kept dry rather than moist, as a very moist atmosphere is liable to produce a soft, succulent growth, which brings on a disease known to gardeners as oedema. This, however, can be prevented by care in keeping the house rather dry. The temperature of the house, too, should not be allowed to fluctuate through too wide a range. The night temperature for tomatoes should range between 65° and 68° F., while the day temperature should run from 70° to 80° F.

_Varieties for Forcing._--The comparatively limited use of tomatoes for forcing purposes in this country has not resulted in the development of many sorts especially suited for this purpose. The Lorillard is the one American sort which is now almost exclusively confined to this use, and it is perhaps more generally cultivated in forcing houses than any other single variety.

_The Tomato as a Field Crop for Canneries._--Owing to the fact that in canned tomatoes it is difficult for the average consumer to note any deficiencies in the appearance of the original fruit, many labor under the delusion that any variety will answer for this purpose. This is a mistaken idea, as quality in canned goods is now an important factor, and it is quite as necessary that a good quality of product should be used for canning as for growing for the early or general market, although from the field side it is natural that tonnage should be a primary consideration.

In the matter of varieties, as in the case of early tomatoes, too much dependence should not be placed upon the name or upon the fact that a neighboring farmer secures good results from a given variety. There are so many variations in the character of soils, even in the same locality, which exert an influence upon the size and quality of crop that the best variety is usually one that is, in part at least, developed by the individual grower. The main point is to select varieties that produce large, smooth, solid fruits, which do not remain green or crack on the shaded side near the stem. Those which possess size as their chief characteristic are frequently of poor quality, as they are likely to possess large seed cavities and to ripen unevenly.

The conditions in some sections are such as to prevent the canners from making as much distinction between good and poor varieties as they would like. Canneries are in a measure obliged to receive all that come, unless they can control absolutely the land upon which the crop is grown. The variation in the quality of the crops of different farmers will make a difference of from 25 to 40 cans on a ton of fruit, or from 6 to 10 per cent--a very considerable item. In good seasons and with good fruit 400 cans may be regarded as the maximum number to be derived from a ton, though late in the season, and with poor varieties, as already stated, the pack from a ton is very much less. The interests of the grower and the canner are really identical in this regard. An improvement in the quality of the fruit will result in an improvement of the canned product and a consequent increase in the price of both the raw and manufactured products. Less expense is involved in growing suitable plants for cannery purposes than for other crops. This is due to the fact that earliness is not so important a factor as it is in the market garden crop.

_Fertilizing and Cultivating the Soil._--In manuring and fertilizing, the character of the crop and the season of its growth should be remembered. Hence, recommendations that were made for an early crop do not apply in all cases except perhaps on the poorer classes of soils. In the first place, the plants are not put in the soil until summer, when the conditions are most favorable for the rapid change of organic forms of nitrogen into nitrates, and thus, if the soil has been manured or is naturally rich in vegetable matter, the additional application of nitrogen in immediately available forms is not so important. In the second place, the object of the growth is not early maturity, but the largest yield of mature fruit.

_Setting and Cultivating the Plants._--The plants should be set from 4 to 4-1/2 feet apart each way and cultivation should begin immediately. The first cultivation should be deep, in order to conserve the moisture, and each subsequent cultivation shallower, in order not to destroy the roots, which will fill the soil as soon as the plants reach maturity. The crop in good seasons should begin to ripen in August, and picking will continue from that time until the last of September.

_Cost, Yield, and Value of Crop._--The cost of production per acre is much less for fruit for canning than in the case of early tomatoes, the chief difference being in the production of the plants. The several items may be classified as follows:

_Cost of growing an acre of tomatoes for canning:_

Plants $ 2.00 Manures and fertilizers 8.00 Preparation of land, setting plants and cultivation 8.00 Picking and carting 10.00 _____ Total $28.00

The yield, as in the case of the early tomatoes, varies widely, ranging from 5 to as high as 20 tons per acre, even 30 tons per acre having been reported in exceptional cases, although the average for a series of years on average land will probably be under 8 tons. Where all conditions are carefully observed, 20-ton yields are frequently obtained, and at the prices received at the cannery, ranging from $5 to $7.50 per ton, according to the locality, the crop is a fairly good one and the net profits are quite as large as for other field crops.

TURNIPS.

A great variety of turnips is grown throughout temperate climates, some of which being coarse in texture are used as food for farm animals while other varieties are raised as table vegetables. There is considerable variation in the color, flavor, and composition of the turnip, the yellow-fleshed sorts as a group being commonly distinguished from the white by the name "Swedes" or "ruta-bagas." In the summer the early white varieties are usually preferred in spite of the fact that they are more watery, while in winter the yellow turnips are more commonly used.

The turnip requires a rich soil, and may be grown either as an early or a late crop. For an early crop, sow the seeds in drills 12 to 18 inches apart as early in the spring as the condition of the soil will permit. Two pounds of seed are required to plant an acre. After the plants appear, thin to about 3 inches. The roots will be ready for use before hot weather. For late turnips the seeds are usually sown broadcast on land from which some early crop has been removed, generally during July or August, but later in the South. Turnips are quite hardy, and the roots need not be gathered until after several frosts. Turnips may be stored in a cellar or buried in a pit outside. Before storing, the tops should be removed.--(F. B. 255, 295; U. Id. E. S. 10; Mich. E. S. 20.)

VEGETABLE MARROW.

The so-called vegetable marrows are a valuable product and closely allied to the pumpkin, both as to species and habit of growth, the principal difference being that the vegetable marrows are used while quite young and tender, and may be baked and served very much the same as sweet potatoes. The vegetable marrows should receive thorough cultivation in order that a tender product may be secured, and should be gathered while the outside skin is still so tender that it may easily be broken by the finger nail. The flesh is either boiled and mashed or baked in the oven and served with butter while hot.--(F. B. 255; Oreg. E. S. B. 74.)

_Quantity of Seeds or Number of Plants Required for a Row 100 Feet in Length, with Distances to Plant, Times for Planting, and Period Required for Production of Crop_.

Brackets indicate that a late or second crop may be planted the same season.