Abstract

LOPEZ AVENDANO, Edgar David; LOPEZ LOPEZ, Miguel Ángel; RAMIREZ HERRERA, Carlos  and  AGUILERA RODRIGUEZ, Manuel. Effect of irrigation, fertilization and the container on the response to grafting of Pinus patula Schltdl. & Cham. seedlings. Rev. mex. de cienc. forestales [online]. 2023, vol.14, n.75, pp.118-142.  Epub Mar 17, 2023. ISSN 2007-1132.  https://doi.org/10.29298/rmcf.v14i75.1255.

Grafting success depends on multiple factors, including species-dependent ones. However, there are few studies on the effects of management of rootstock and the composite (grafted) Pinus patula, seedlings on graft performance. The objective of this study was to evaluate the grafting success and development of P. patula shoot grafts based on factors associated with management of both the rootstock and the composite (grafted) plant. In a 2x2x2 factorial experiment, the rootstocks were subjected to two types of container, two levels of irrigation and two levels of fertilization one month before grafting, which went on with the treatments until the end of the experimental period. Grafting success (PI), graft basal diameter (DBI), graft length (LI), graft robustness index (IR), graft basal diameter increase (IDBI) and graft length increase (ILI) were evaluated. Mann-Whitney tests and analyses of variance followed by Tukey tests (α=0.05) were applied. The factors tested did not affect statistically or directly PI, whose general mean value was 72.5 %. The container type and levels of watering and fertilization significantly affected all the assessed morphological variables.

Keywords : Slow release fertilizer; graft; rootstock; grafting success; asexual reproduction; saturation watering.

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