**5.1.3 Methods of graft and level of technology**

There are different survival rates of grafting for different graft methods. Though to some extent, selection of graft methods depends on the type of scion and purposes of research, the bud graft is better than the stem graft and branch graft, and the plug is better than the cleft graft and splice graft. For distant grafting in soybean, the side-plug graft on the base of stem is generally an ideal approach. In addition, the skill level of grafting technology has an important impact on the survival rate of graft. If the wedge-shaped stem end of the soybean scion is subject to damage or doesn't get to the bottom of the hole on the base of stem of rootstock when grafting, the seedling of soybean scion would wither to death for lack of sufficient water and nutrient.
