Graft of small shield

 

I put like example a graft of Navelate orange tree on lemon tree. This type of graft becomes April, May and June by bud guarding, that is, that the bud sprouts the same year and in July, August and September by bud sleeping, that is, that small shield is successful but the bud does not appear until the following Spring. It is the typical graft of the citruses and the rose bushes.

 

In the first place it is cut with the knife to graft the crust of the host in a smooth zone and without buds, doing a horizontal cut and another vertical that downwards goes from the horizontal cut several centimeters, in form of T.

Next, helping us with the knife to graft, the crust of both sides is taken off as if we opened a window.

Here you see in detail as the crust is detached, leaving in the open the white and substantial cambium.

Next you take the branch of the variety to graft and with the knife to graft you cut the crust in small shield form, trying that is left in the superior wide part a good bud with petiole of a leaf, which you will have cut to diminish the sweating of small shield. Soon, making handle with taken care of with the knife to graft, you took off small shield, avoiding to touch with the knife the internal part of the bud.

Thus we must have left small shield, with their typical form of medieval shield.

Lateral vision of small shield with cut petiole. When manipulating the small shield you must avoid to touch with the fingers the internal and substantial part, that is, the Cambium, the alive part that grows and is united intimately to the cambium of the host. In order to avoid to touch it, we must take the small shield by petiole.

Here you see the internal part of small shield with the green cambium and several small points that correspond from top to bottom to the internal part of the bud, the base of petiole of the leaf (two small points) and soon more down the outline of a thorn, that in this case has not been developed. You must avoid to take the small shield  with a thorn, since when trying to take off them, the thorn does not take off and it breaks the small shield.

Next you take the small shield by the petiole and you introduce it in the opened small window of the host.

If we have taken off well  the crust of the host, the introduction of small shield is very easy.

Once introduced you must perfectly fit it in the opening of the host, trying that the superior part of small shield contacts with the horizontal cut of the host, so that, once taken hold the graft, there is a continuity in the crusts.

And finally you tie the graft with transparent plastic tape, leaving outside the petiole, that will serve us to know if the small shield is alive, since, in successful case, to the 12 or 15 days, touching it with the finger, it will be taken off with much facility, leaving in small shield a green wound. However, if it is not alive, petiole dries, so that, if it is taken off, it leaves a brown wound in small shield, which means that this one has died and the graft has not taken hold. Past 20 or 25 days, the bud appears and you can untie the plastic tape. This tape is the one that is habitually used for the grafts of tomato and watermelons. In case you have not this tape, the fastening can be made without problems with green or white raphia.