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Husain Umar
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Journal : Forest Science

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BEBERAPA SIFAT KIMIA TANAH DI BAWAH TEGAKAN NYATOH (Palaquium obtusifolium Burck) DI DESA SINDOSA KECAMATAN SINDUE TOBATA KABUPATEN DONGGALA Ibrahim, Yusnita; Yusran, Yusran; Umar, Husain
ForestSains Vol 16, No 1 (2018): Desember
Publisher : Universitas Tadulako

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Abstract

Nyatoh (Palaquium obtusifolium Burck) is a type of tree that is very much in demand by local and international communities. Nyatoh stands (Palaquium obtusifolium Burck) which is adjacent to the agricultural crops owned by residents in the village, is interesting because it will show that, the level of soil fertility is influenced by vegetation. Not only that, according to local residents, after the land was planted with Nyatoh plants (Palaquium obtusifolium Burck) erosion and landslides had not occurred again.The research was conducted from October to December 2017 located in the village of Sindosa, Sindue Tobata district, Donggala district. This research was started from a field survey, determination of sampling points, soil sampling and analysis of soil samples in the laboratory of the Faculty of Agriculture, University of Tadulako. Soil sampling is done by taking intact soil samples at several predetermined locations namely peaks, backs, and valleys. Each slope is determined by 5 soil sampling points to represent each location with 2 types of depth, namely 0-30 cm and 30-60 cm. Then the samples obtained from these 5 points will be compiled. From the three locations there were 30 soil samples before they were compiled. Overall soil samples after being compiled will get 6 soil samples analyzed at the Soil Science Laboratory of the Faculty of Agriculture to determine the chemical condition of the soil. Data obtained from the laboratory are then analyzed descriptively, namely by describing the chemical properties of the soil, namely pH, CEC, C-Organic and soil organic matter.The results showed an average pH with a depth of 0-30 cm, which is 6.64, while at a depth of 30-60 cm showed a pH with an average of 6.43, Cation Exchange Capacity (CEC) on average below the Nyato stand at Sindosa village Sindue Tobata District Donggala Regency at a depth of 0-30 cm, which is 25.87 (cmol (+) kg ¹) is in the medium category, while at a depth of 30-60 cm is 3.23 (cmol (+) kg kedalaman ¹) belongs to the very low category. The C-Organic content at a depth of 0-30 cm with an average of 2.45 is included in the medium category and at a depth of 30-60 cm that is 0.65, including very low. The content of Soil Organic Materials (BOT) with an average depth of 0-30 cm, which is 4.23 included in the high category and at a depth of 30-60 cm with an average of 1.11 is low.
PENGARUH LAMA PERENDAMAN DAN MEDIA TABUR TERHADAP PERKECAMBAHAN BENIH MAHONI (Swietenia mahagoni (L) Jacq) Zulkaidhah, Zulkaidhah; Umar, Husain; Kiptiah, Sarifatul
ForestSains Vol 14, No 1 (2016): Desember
Publisher : Universitas Tadulako

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Abstract

The availability of water is a very important factor in the germination process. Therefore, it is necessary immersion process mahogany seeds to accelerate germination. The purpose of this study was to determine the effect of immersion time and media of sow to germination mahogany (Swietenia mahagoni (L) Jacq). This research was conducted from December 2015 to February 2016 at Permanent Nursery of BPDAS Palu – Poso, Tadulako University. This research applied a completely randomized design, factorial pattern with 9 treatments and 5 replications. The treatments of this research were immersion time that consist of 24 hours, 49 hours and 72 hours. Data were analyzed by analysis of variance and tested using Significant Difference test (LSD) with level 5%. The results of this study showed that immersion duration and media sow has significant effect on germination percentage, rate germination, root length and vigor, except the treatment of sow media has no significant effect on root length of mahogany seedling, and did not interaction between the two treatments. The highest germination percentages in treatment of immersion were 25 hours (P1) and 48 hours (P2) namely 56,87%, and 45,77%, respectively, and the lowest was 72 hours (P3) namely 24,43%. The fastest rates of germination for immersion treatment were 72 hours (P3) and 24 hours (P1) namely 17,73 days, 21,01 days respectively, and the latest was 48 hours (P2) namely 21,89 days. the longest roots were in the immersion treatments for 24 hours (P1), and 48 hours (P2) namely 9,26 cm, 8,63 cm respectively, and the shortest was in 72 hours (P3) namely 7,71 cm. The highest seed vigor was in the immersion treatment for 24 hours (P1) and 48 hours (P2) namely 50,23%, 39,11%, respectively, and the lowest was 72 hours (P3) namely 22,66%. The optimum of sow media for all parameters was sail + goat manure + carbonated rice husk.
Co-Authors . Rahmawati . Yusran Abd Rauf Adewiyah, Rabiatul Adrianto, Adrianto Ali Djamhuri Ari Setiawan Asgar Taiyeb Asriani, . Bau Toknok Darhana, Darhana Dina Natalia Eki Zikrullah, Eki Ernawati Ernawati Evi Damayanti, Evi Fuad Anugra Hamzari Hamzari Harsono, Dedi Ibrahim, Yusnita Irmasari - Irmasari Irmasari Kiptiah, Sarifatul Lisda, Lisda Lopang, Abigael Indri Maemonah, Maemonah Marwan Marwan Megawati - Muhajir Muhajir, Muhajir Mus’af, M. Muslimin Muslimin Nofika Trisna Novita Hapshari, Novita Nur, Sri Ratnawaty Porombi, Sulfriana Raden Mohamad Herdian Bhakti Rahmawati, Rahmawati Ramadhanil Ramadhanil Retno Wulandari Rosdiana Rosdiana Rustam Rustam Sitti Ramlah Sri Ningsih Supriyanto Supriyanto Suriana Dwi Sartika Sustri Sustri Syamsul Arifin Uminawar Uminawar Wardah Wardah YosHariyantho, Dwi Yusran Yusran Zulkaidhah Zulkaidhah