CHAPTER XIII
Staking, Training and Pruning
Under favorable conditions of soil and climate, plants of most varieties of tomatoes will, in field culture, yield as much fruit if allowed to grow naturally and unpruned as if trained and pruned. This is especially true of the sorts of the Earliana type and on warm, sandy soils, while it may not be true of the stronger growing sorts, or on rich clay lands or where the fertilizer used contains an excess of nitrogen. In any case more fruit can be grown to the acre on pruned and staked plants because more of them can be gotten on an acre; and it is an advantage to grow them in that way because it enables us, by later cultivation, to keep the ground in good tilth longer; also it facilitates the gathering of the fruit; and last, but not least, it generally enables us to produce better ripened and flavored fruit.
Staking and pruning used to be the almost universal practice in the South, but in many sections growers have abandoned it, claiming that they get as good or better results without it. In the North it is rarely used in field culture, though often used in private gardens and by some market gardeners, and both staking or tying up and pruning are essential to the profitable growing of tomatoes under glass. In the South, stout stakes from 1 to 2 inches in diameter and 4 to 5 feet long are driven into the ground so that they can be depended upon to hold the plants erect through the heaviest storms, as seen in Fig. 21. This is generally and wisely done as soon as the plant is set, though some growers delay doing so until the fruit is well set, claiming that the disturbance of staking, tying and pruning tends to hasten the ripening of the fruit. The plant is then tied up, the tying material being wrapped once about the stake and then looped about the plant so as to prevent slipping on the stake or choking the stem of the plant as it enlarges. Raffia is largely used and is one of the best tying materials, but short pieces of any soft, cheap string can be used. The tying up will need to be repeated as the stem elongates, which it will do very rapidly.
In pruning the tomato we should allow the central shoot of the young plant to grow, and remove all of the side shoots which spring from the axils of the leaves and sometimes even from the fruit clusters, as seen in Fig. 22. It is very desirable that this be done when the branches are small, as there is then less danger of seriously disturbing the balance of the growing forces of the plant, and also because there is less danger of careless workmen cutting off the main shoot in place of a lateral, which would seriously check the ripening of the fruit. It is especially important that any shoots springing from the fruit cluster be removed as early as possible. For these reasons it is important that, if the plants are to be pruned at all, the field be gone over every few days. If the pruning is not well done it is a disadvantage rather than a help.
FIG. 21—TRAINING TOMATOES IN FLORIDA TO SINGLE STAKE
(Photo by courtesy of Prof. P. H. Rolfs, Director Florida Experiment Station)
