Indolebutyric Acid (Iba) and Substrate in Rooting and Development of Brazilian Peppertree Cuttings

Abstract

This work aimed to evaluate the development of seedlings by cuttings Brazilian peppertree cuttings submitted to different treatments and substrates. For that we used a randomized experimental design in a 2x4 factorial scheme, consisting of the use (3.000 mg.L-1)) or not of IBA associated with different types of substrate: vermiculite (V); carbonized rice husk with vermicompost (CV); carbonized rice husk with vermicompost and sand (CVS); Turfa Fértil® commercial substrate (CS), in four replicates per treatment, each consisting of 10 cuttings. After 90 days, the following variables were evaluated: percentage of rooted cuttings, length of the largest root, number of leaves over 1 cm in length, and dry root weight. The Generalized Linear Model (GLM) was used with p ‹ 0.05 of significance in the data analysis. The use of IBA in rooting Brazilian peppertree cuttings is recommended. CVS is the substrate with the best interactions, and substrates like CS should be avoided.