This study was conducted at El- Kod Agricultural Research Station under nursery conditions during the season 2000/2001 & 2002/2003. It included three rootstocks of mango obtained from genetic resources of Horticulture Section. The Study aimed to determine response of mango side-grafting in nursery and effect of moisture level on root system of seedling. It involved 2 treatments of moisture level (62.7% and 81.3%) of available moisture, thereafter, irrigation intervals were 7 and 14 days consecutively. Parameters for the three rootstocks recorded were growth, rate of successful grafting, stem width (mm) and rootstocks length (cm). At moisture level 62.7%, in rootstock 88, there were significant differences between irrigation effect, rootstocks scion and percentage of grafting. Results indicated successful grafting for the three rootstocks in effect of interaction in irrigation and rootstocks (stem diameter) and differed significantly. Interaction between treatments showed that length of stem was superior and significant.
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