Effects of Breaking Dormancy and Nursery Materials on the Growth of Black Seed Riang (Parkia timoriana (DC.) Merr.)

Abstract

The objective of this study was to study the effects of breaking dormancy by clipping the end of the seed and nursery materials on the growth of black seed Riang (Parkia timoriana (DC.) Merr.). The experiments were conducted by a 3 × 2 factorial experiment using a completely randomized design with two replications. There were three level of clipping seed: 1, 1.5, and 2 millimeters. Two types of nursery materials were used: sand and cotton. Growth data were collected, including the percentage of germination, root length, and fresh weight. The result demonstrated that there was a significant difference (p < 0.05) in the interaction between breaking dormancy and nursery materials on the percentage of germination, root length, and fresh weight. The breaking dormancy by clipping the end of the seed at 2 millimeters and the nursery material by sand gave the highest mean percentage of germination, root length, and fresh weight.