<b>Rooting of herbaceous cuttings of ‘Fuerte’ avocado in solution of indol-butiric acid with different times of immersion</b> - DOI: 10.4025/actasciagron.v29i3.389

Abstract

This study was carried out at Embrapa, Canoinhas, state of Santa Catarina, Brazil, aiming to verify the effect of different times of immersion in solution of indol-butiric acid (IBA) in the rooting of herbaceous cuttings of ‘Fuerte’ avocado. The cuttings were collected on May 25^th, 2004, from one-yearold plants and prepared with a 4-6mm diameter and 10cm long, with 2 remaining leaves cut in the middle, in the upper third part. The treatments were the following: 5 and 30 seconds; 5 minutes; 1, 4, 8 and 12 hours in solution of 1000 mg L^-1 of IBA. The experimental design was entirely randomized, with seven treatments, four replications and 12 cuttings for parcel. After the application of the IBA, the cuttings were placed in expanded polystyrene trays with 72 cells, with turf as substratum, and taken root in a greenhouse with intermittent mist. After 185 days the evaluation of the experiment was carried out. The fast immersion, for a period of 5 and 30 seconds in solution of 1000 mg L^-1 of AIB, was statistically more favorable to the rooting of the cuttings, being statistically superior to the other times of immersion. The times of immersion longer than one hour presented phytotoxic effect. The 30-second immersion in a solution of 1000 mg L^-1 of IBA is recommended for the herbaceous cuttings of young plants of the ‘Fuerte’ avocado.