Effect of indolbutiric acid and raizon in the rooting of herbaceous and hardwoody cuttings of umbu tree - DOI: 10.4025/actasciagron.v29i3.468

Abstract

The umbu tree can be propagated assexually, but few information are had that the species can be propagation by cutting. The objective of the present research was to evaluate the effect of different concentrations of IBA (indolbutiric acid) and Raizon 05^® in the rooting of cuttings herbaceous and hardwoody of umbu tree. The experimental design used was block at random, with four concentrations of IBA (0; 500; 1000 and 2000 mg L^-1) and one of Raizon 05^® and two types of cuttings (herbaceous and hardwoody). After the treatment of the cuttings with Metiltiofan (Thiophanate methyl a 0,05% i.a.) for one minute, these were immersed in the solutions of IBA by ten minutes, or in contact with Raizon 05^®, soon afterwards took place the planted in plastic tubets containing medium vermiculite. The material was transported for greenhouse with 50% of light reduction with overhead irrigation of the type under intermittent mist, with intervals of 5 minutes and duration of 10 seconds. The analyzed variables were: rooting percentage and surviving cuttings and mass of the matter dries of the root. It can be ended that: the woody cutting presented better results in relation to the herbaceous cuttings for the survival; the percentage largest of rooting was verified in herbaceous cuttings with the application of 500 mg L^-1 of IBA, providing 33.33% of rooted cuttings.