This form of budding is used on certain plants where the shield bud is not successful.
Secure branches of either the peach or the willow, about one-half inch in diameter or a trifle larger and of any convenient length. With the budding-knife make a rectangular incision, three fourths of an inch in length and one fourth to three eighths of an inch in width, in the stock through the bark to the wood (Fig. 21), and turn down the flap of bark. Now cut a section of bark including a well-formed bud, similar in shape to the rectangular section in the stock. The bud on the bark should be about twice as far from the bottom as from the top of the bark. No wood should be attached to the bark containing the bud. Now place the bud under the flap of bark so that the cambium layer of the bud and the stock are in close apposition, and turn the flap over the bud and tie firmly. The operation is now complete.
Make a drawing, four inches in length, showing the stock with the flap of bark cut and turned down. Label all parts. Make a drawing of the bud twice its natural size, and label. Make another drawing, four inches in length, showing the stock with the bud in place and wrapped. Describe fully each operation.
On what kind of plants is this form of budding used? Discuss.
Fig. 21. Plate bud, showing the stock with the bark turned back and the bud ready for insertion.
This form of budding is a modification of plate budding. In H-budding a flap is formed both above and below the horizontal cut on the stock, which covers the bud from both ends. This allows the more perfect fitting of the bark around the bud.
Secure a small branch, similar to that used in plate budding, and make the same cut as in plate budding, but, instead of forming one flap, continue your longitudinal cuts equal distances on each side of the transverse cut. Now with the budding-knife peel the bark in opposite directions from the transverse cut, forming the letter H (Fig. 22). Proceed to cut your bud, including a piece of bark the size of the opening made by turning back both flaps of the bark on the stock. Cut the bark including the bud in such a manner that the bud is in the center of the bark. Now place the cambium layer of the bud and of the stock together and tie the two flaps of bark on the stock firmly around the bud. At least a dozen trials should be made to insure good technique and ease of operation. Make a drawing of the stock, four inches in length, showing the cut, with both flaps of bark turned back. Make a drawing of the bud, showing the front and the side view. Label. Describe fully each operation.
Fig. 22. H-Budding, showing the stock and the bud.