EFFECTS OF NAPHTALENE ACETIC ACID (NAA) ON VEGETATIVE PROPAGATION OF ARAUCARIA (ARAUCARIA ANGUSTIFOLIA) AT AFAKA KADUNA, NIGERIA

Abstract

This research is on effects of Naphthalene Acetic Acid (NAA), on vegetative propagation of araucaria (Araucaria angustifolia) at Federal College of Forestry Mechanization, Afaka Kaduna. The experimental design used was completely Randomized Block Design (BRBD) with sixteen (16) treatments, replicated three times. In this research, specific objectives were highlighted with the aim of assessing the effects plant hormone used at two different concentrations (500ppm and 1000ppm), on the sprouting and rooting of Araucaria angustifolia in Forestry, Kaduna. Survival count, Number of leaves per cutting, and Num ber of roots per plant were recorded. The results showed that plant hormone at lower concentration significantly affect percentage survival count, Number of leaves per cutting, Number of root per plant. In survival count, Number of leaves per cutting, and Number of root per plant, (A1B4): NAA a\t 500ppm concentration + pure River Sand gave the highest value of mean compared to other treatments. The findings showed that it is possible to propagate Araucaria angustifolia vegetatively using Pure River Sand + 500ppm of Naphthalene Acetic Acid for mass production. It is suggested from the study that propagation of the Araucaria angustifolia should be carried out using low concentration (500PPM) of NAA with a rooting medium.