The objective of this study was to determine the effect of

substrates with lombrihumus on the development of plumb

cuttings growing in a nursery. Sections of Prunus salicina var.

Mariana 2624 were grafted on con P. salicina var. Methley

and planted on substrates containing lombrihumus. The

work was conducted at the Faculty of Agricultural Sciences,

UNAM, México, under fi eld conditions, from December

2002 to January 2003. A completely randomized was

employed, with factorial arrangement with four treatments

and four replications. The factors studied were the time of

cutting and grafting and the different types of substrates.

The variables measured were plant length, cutting diameter,

number of internodes, percent successful grafting, number of

leaves per plant, leaf area, perimeter and length. The optical

time for cutting preparation and grafting in situ under fi eld

conditions in Toluca, México, was January. The largest

grafting success was obtained with susbtrate composed of

20% peat (azolve soil), 30% perlite, and 50% lombrihumus.

With this technology, fully developed plumb plants can be

obtained in nine months.

Keywords: Leaf area, Eisenia andrei.