In the current study, a novel application of using nano-materials and organic derived-biochar has
been applied to promote some olive cuttings rooting compared to traditional materials like IBA. It was expected
that a smarter practise of these substances in fruit production could be achievable to solve cuttings rooting
problems. However, interactions of both materials with olive cuttings are required to be under stood prior to wideranging recommendation. The present study assists to explore the influence of silver (Ag) nanoparticles (NPs) and
IBA treatments with or without biochar on enhancing rootability of Kalamata and Picual olive cuttings. Different
concentrations of AgNPs (0, 1, 5, 10, 20 and 40 ppm), IBA (3000, 4000 and 5000 ppm) and olive pomace derivedbiochar (0, 10, 20, 30, and 40 grams per each pot) have been applied to olive cuttings. After the treatments were
applied to the basal end hardwood cuttings were immediately planted in polyethylene pots (10 cm × 20 cm) filled
with a sand : peatmoss at the ratio of 1:1 and kept in a shade house and 80-90% relative humidity and high basal
temperature (24 °C). The results showed superior positive effect of biochar addition at 40 g per pot on percentage
of rooted cuttings, number of roots per cutting, root and branch length and root fresh weights as compared with
control in case of Kalmata and Picual olive cvs.in both seasons. The AgNPs at 20 ppm enhanced obviously the
rooted cuttings percentage and number of roots per cutting, while IBA at 3000 ppm was most effective on root
and branch length and root fresh weights as compared with the other treatments for Kalmata and Picual olive cvs.
in both seasons. This study open a new door for investigating the effect of the novel applications of AgNPs and
biochar in different fruit cuttings propagation taking into account that each fruit species require an individual
experimental studies to determine the promising additions of both treatments.