| Abstrakt: |
The Si nutrients can be sourced from organic and inorganic materials. Currently, most of the silicon source from organic materials comes from straw or rice husks. The utilization of oil palm plantation waste as a source of Si (in the form of SiO2) is still very limited and no one has studied the role of oil palm leaf ash in the germination of Chinese cabbage. The goal of this study was to determine the optimal dose of oil palm leaf ash for Chinese cabbage germination. This experiment was carried out using a growing medium mixed with soil compost and oil palm leaf ash. The experimental design was arranged by Randomized Block Design (RBD) with concentrations of oil palm leaf ash, namely: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10%. Oil palm leaf ash is obtained from burning oil palm leaves in the open air. The results showed that the presence of 9% oil palm ash in planting media resulted in the highest capacity and rate of germination of Chinese cabbage two weeks after planting. The application of oil palm ash also had an effect on plant height, number of leaves, and root length, with the best concentrations being 9% and 10%. [ABSTRACT FROM AUTHOR] |
