Size for transplanting.—Small trees usually do best. Large trees are often transplanted with the hope of having an abundance of fruit earlier. This usually defeats the object. The large trees will bear a little fruit earlier than the small ones; but the injury by removal is so much greater, that the small stocky trees come into full, regular bearing much the soonest. From five to eight feet high is often most convenient for field-orchard culture. But, wherever we can take care of them, it is better to set out smaller trees; they will do better for years. A suitable drain, extending through the orchard, under each row of trees, will make a good orchard on low, wet land.
Trimming at the time of transplanting.—Injured roots should be removed as in the general directions under Transplanting. But the idea of cutting off most of the top is a very serious error. When large trees are transplanted, which must necessarily lose many of their roots in removal, a corresponding portion of the top must be separated; but in no other case. The leaves are the lungs of the tree. How shall it have vitality if most of them are removed? It is like destroying one lung and half of the other, and then expect a man to be in vigorous health. We have often seen the most of two years' growth of trees lost by such reckless pruning. If the roots are tolerably whole and sound, leave the top so. A peach-tree needs to be trimmed much closer when transplanted, because it has so many more buds to throw out leaves.
Mulching.—This is quite as beneficial to apple-trees as to all transplanted trees. Well done, it preserves a regularity of moisture that almost insures the life of the tree.
Pruning.—The tops should be kept open and exposed to the sun, the cross limbs cut out, and everything removed that shows decided symptoms of decay. The productiveness of apple-trees depends very much upon pruning very sparingly and judiciously. There are two ways to keep an open top: one is, to allow many large limbs to grow, and cut out most of the small ones, thus leaving a large collection of bare poles without anything on which the fruit can grow;—the other method is to allow few limbs to grow large, and keep them well covered with small twigs, which always bear the fruit. The latter method will produce two or three times as much fruit as the former.
The head of an apple-tree should be formed at a height that will allow a team to pass around under its branches.
Distance apart.—In a full-grown orchard, that is designed to cover the ground, the trees should be two rods (thirty-three feet) apart. When it is designed always to cultivate the ground, and land is plenty, set them fifty or sixty feet apart. You will be likely always to have fine fruit, and a crop on the land beside. Our recommendation to every one is to set out all orchards, of whatever fruit, so as to have them cover the whole ground when in maturity. Among apple-trees, dwarf pears, peaches, or quinces, may be set, which will be profitable before the apples need all the ground.
Bearing years.—A cultivator may have a part of his orchard bear one year, and the remainder the next, or he may have them all bear every year. There are two reasons why a tree bears full this year and will not bear the next. One is, it is allowed to have such a superabundance of fruit to mature this year, that it has no strength to mature fruit-buds for the next, and hence a barren year; the other reason is, a want of proper culture and the specific manures for the apple. Manure highly, keep off the insects, cultivate well, and do not allow too much to remain on the trees one season, and you will have a good crop every year. But if one would let his trees take the natural course, but wishes to change the bearing year of half of his orchard, he can accomplish it by removing the blossoms or young fruit from a part of his trees on the bearing year, and those trees having no fruit to mature will put forth an abundance of buds for fruit the following season; thus the fruit-season will be changed without lessening the productiveness. Go through a fruit-region in what is called the non-bearing seasons, and you will find some orchards and some trees very full of fruit. Trees of the same variety in another orchard near by will have very little fruit. This shows that the bearing season is a matter of mere habit, in all except what is determined by late frosts. This fact may be turned to great pecuniary value, by producing an abundance of apples every year.
Plowing and pasturing.—An apple-orchard should be often plowed, but not too deep among the roots. When not actually under the plow, it should be pastured, with fowls, calves, or sheep. Swine are recommended, as they will eat all the apples that fall prematurely, and with them the worms that made them fall. But we have often seen hogs, by their rooting and rubbing, kill the trees. Better to pick up the apples that fall too early, and give them to the swine. Turkeys and hens in an orchard will do much to destroy the various insects. They may be removed for a short time when they begin to peck the ripening fruit.
Orchards pastured by sheep are said not to be infested with caterpillars. Sheep pastured and salted under apple-trees greatly enrich the soil, and in those elements peculiarly beneficial.
Enemies.—There are several of these that are quite destructive, when not properly guarded against. Two things are necessary, and, united and thoroughly performed, they afford a remedy or a preventive for most of the depredations of all insects: 1. Keep the trees well cleared of all rough, loose bark, which affords so many hiding-places for insects.
2. Wash the trunks and large limbs of the trees, twice between the 25th of May and the 15th of August, with a ley of wood-ashes or dissolved potash. Apple-trees will bear it strong enough to kill some of the finest cherries. We add another very effectual wash. Let cultivators choose between the two. Into two gallons of water put two quarts of soft-soap and one fourth pound of sulphur. If you add tobacco-juice, or any other very offensive article, it will be still better.
Apple-worm.—The insect that produces this worm lays its egg in the blossom-end of the young apple. That egg makes a worm that passes down about the core and ruins the fruit. Apples so affected will fall prematurely, and should be picked up and fed to swine. This done every day during their falling, which does not last a great while, will remedy the evil in two seasons. The worm that crawls from the fallen apple gets into crevices in rough bark, and spins his cocoon, in which he remains till the following spring.
Bonfires, for a few evenings in the fore part of June, in an orchard infested with moths, will destroy vast numbers of them, before they have deposited their eggs. This can not be too strongly insisted upon.
Apple-Worms. a The young worm. b The full-grown worm. c The same magnified. d Cocoon. e Chrysalis. f Perfect insect. g The same magnified. h i Passage of the worm in the fruit. j Worm in the fruit. k Place of egress.
Bark-louse.—Dull white, oval scales, one tenth of an inch long, which sometimes appear on the stems of trees in vast numbers, may be destroyed by the wash recommended above.
Woolly aphis—called in Europe by the misnomer, American blight—is very destructive across the water, but does not exist extensively on this side. It is supposed to exist, in this country, only where it has been introduced with imported trees. It appears as a white downy substance in the small forks of trees. This is composed of a large number of very minute woolly lice, which increase with wonderful rapidity. They are easily destroyed by washing with diluted sulphuric acid—three fourths of an ounce, by measure, from the druggist's—and seven and a half ounces of water, applied by a rag tied to the end of a stick. The operator must keep it from his clothes. After the first rain this is perfectly effectual.
Apple-tree borer.—This is a fleshy-white grub, found in the trunks of the trees. It enters at the surface of the ground where the bark is tender, and either girdles or thoroughly perforates the tree, causing its death. This is produced by a brown and white striped beetle about half an inch long. It does not go through its different stages annually, but remains a grub two or three years. It finally comes out in its winged state, early in June, flying in the night and laying its eggs. If the borers are already in the tree, they may be killed by cutting out, or by a steel wire thrust into their holes. But better prevent them. This can be done effectually by placing a small mound of ashes or lime around each tree early in the spring.
On nursery-trees their attacks may be prevented by washing