Evaluation of Calcium and Sodium Salts on Seed Germination and Early Growth of Leucaena leucocephala

This study was conducted to determine the effect of various sodium and calcium-based saline treatments on the germination and early growth of Leucaena leucocephala. The evaluation of calcium-based salts has never been studied for its effects on Leucaena leucocephala. This experiment utilized 5 increasing concentrations of sodium chloride, calcium chloride, and a 1:1 ratio of NaCl: CaCl2. The growth and germination of these seeds were recorded over the course of 11 days. Two trials of this experiment were run- the first using seeds collected from ASU's Polytechnic campus and the second using seeds collected from roadside landscaping. The results of both trials indicated that germination and early growth are affected by the different saline treatments. For trial one, the seeds germinated best under treatments involving either 0.0125 or 0.025 M CaCl2 or NaCl: CaCl2. For trial two, the seeds germinated best under treatments involving either 0.025 or 0.05 M CaCl2 or NaCl: CaCl2. Thus, seeds from Leucaena leucocephala are best germinated under saline treatments consisting of either just calcium chloride or a 1:1 mixture of sodium chloride and calcium chloride.