Effects of organic matter content and seedling density for growing bare-root narrow-leaved ash (Fraxinus angustifolia vahl.) seedlings

Abstract

This study was conducted to determine the effect of organic matter (OM) content and seedling density (SD) on achieving the number of quality one-year old bare-root of Narrow-leaved ash (Fraxinus angustifolia Vahl.) seedlings. The seedlings with ≥75 cm and 0.8 cm root-collar diameter were identified as the quality seedlings. The split plot design was used for the study. Three rates of OM (2 m³, 1 m³, and 0 m³ added to 150-m seedbed) made up as the main treatment. Four SDs (100, 75, 50, and 25 seedlings m^-2) were used on each of the OM treatment plots. The results have shown that the level of OM and SD had a significant effect on the number of quality seedlings obtained from certain unit area. The maximum quality seedling number (QSN) was obtained from the highest (2 m³) OM treatment plots. The QSN obtained in the densities of 75, 100, 50, and 25 were 38, 38, 33, and 17, respectively. The QSN in the densities of 75, 100, and 50 that applied within the 2 m³ OM treatments were in the same group. There was not significant difference between the number of quality seedlings obtained from 1 and 0 m³ OM treatment plots. It was apparent that, while the productivity of seedbed increased, the number of quality seedlings increased. It suggests that the SD should be adjusted according to the productivity of seedbed. Also, growing seedlings in lower densities are more feasible and economic than higher densities. The SD of 50 with the 2 m³ OM and the SD of 25 with 1 and 0 m³ OM are recommended for the practice.

Keywords

• Narrow-leaved ash,organic matter,seedling density,quality seedling

Kaynakça

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