Concentration Effect of Ethanol Extract Pinus merkusii Leaves Litter on Zea mays L. Seed Germination

Abstract

Human resources is one of the main factor in forest management, so it is important to develop a model of community-based forest management through agroforestry system. The agroforestry system in Trenggalek was implemented by combining a pine plant with Bisi-2 corn varieties. However, the presence of dry pine leaves litter suspected to contain allelopathy, thus make the percentage of germination of seed corn in a low. This study aimed to determine the concentration effect of ethanol extract of pine leaves litter (Pinus merkusii) on the germination of seed corn (Zea mays L.) Bisi-2 varieties. The research design that used Completely Randomized Design and four replications with concentration variations of 0% (control), 10%, 15%, 20% and 25%. Based on ANOVA and Duncan Multiple Range Test with significant level of 5% showed that there was the influence of the ethanol extract of pine leaves litter on the germination of seed corn Bisi-2 varieties. The higher concentration, make the germination of corn seeds more inhibited.