Pengaruh Jarak Tanam dari Pantai Terhadap Tanaman Bakau Merah (Rhizophora apiculata) di Pesisir Pantai Desa Pulau Sembilan Kecamatan Pangkalan Susu Kabupaten Langkat

Abstract

This study aims to determine the effect of growth on the red mangrove Rhizophora apiculata from the coastal distance to the north wind direction in Pulau Sembilan village. The study was carried out from October 2020 to december 2020. This study used a completely randomized design (CRD) with distance treatment consisting of treatment 1 (planting distance from the beach 43 m), treatment 2 (planting distance from the beach 44 m), treatment 3 (planting distance from the beach 45 m), treatment 4 (planting distance from the beach 46 m), treatment 5 (planting distance from the beach 47 m). The results of the studyof plant spacing on R. apiculata mangrove seedlings for 12 weeks showed that there was no significant effect. Based on the results of this study, it was shown that the most optimal spacing was in the P5 treatment (47 m spacing) where for the average seedling height value of 37.9 cm/12 weeks, the average diameter value of 3.5 mm/12week. Anova test results show the value of Sig. >0.05 so it was concluded that the spacing of R. apiculata seedlings had no significant effect on the parameters of plant height, stem diameter, number of leaves, wet weight (leaves, stems, roots), dryweight (leaves, stems, roots), leaf area and leaf area index.