ROOTING OF STEM CUTTINGS OF CROTON AND TI PLANT TREATED WITH INDOL BUTYRIC ACID AND JAVA-GRASS EXTRACT

Abstract

Vegetative propagation through cuttings, together with the use of products that promote faster rooting, is one of the most efficient strategies for producers to cultivate seedlings. This work aimed to evaluate rooting treatments to produce croton and plant cuttings. The experiment was carried out in a completely randomized design, factorial 2 x 6, where the first factor is croton and plant species, and the second the rooters (java-grass extract and IBA), with 10 replications. The cuttings were collected in branches in the central region, with 15 cm and defoliated, subsequently subjected to water for 24 hours. The treatments with java-grass extract concentrations were obtained from the crude extract that originated 2.5; 5.0; 10.0 and 25.0 mg mL-1. The IBA extract was at a concentration of 2.000 mg mL-1, plus the control. The cuttings were immersed for 15 min in the respective treatments, and after 65 days the number of leaves, roots, and shoots, the length of the largest root, and fresh and dry mass were evaluated. In this study, it was verified that the concentrations of java-grass extract tested in this work were not efficient for the rooting of the cuttings. However, the use of IBA was efficient, contributing to the sprouting of leaves and roots as well as the number of leaves and length of roots of croton and plant. It is concluded that there was interaction between the rooters and the croton and coconut palm species. IBA was the best stimulant for both the root system and the aerial part of the cuttings of both species. The concentrations of sedge extract used in this work did not show concentrations for better performance, so it is necessary to carry out new studies increasing the concentrations of java-grass extract.