PURPOSE AND METHOD OF THE EXPERIMENT.
The purpose of this experimental work was to devise some method of procedure in the bench grafting of nut trees which would be reliable and practical, especially if done during January, February, and March. The whip or tongue method with variation in thinness of tongue to make closely fitting unions, was employed. For the Persian walnut cions, black walnut, butternut and Persian walnut roots were used, and for the pecan cions, hardy Indiana and ordinary southern pecan seedlings, whole root and piece root, were used. Part of the grafts were planted outdoors in nursery rows as soon as made and part were placed in soil or decayed sawdust in a cool greenhouse. This was for the purpose of determining whether or not it would prove advantageous to go to the extra expense and trouble of placing the grafts under greenhouse conditions until April or May. Ground beds were used and thus bottom heat was not applied.