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arif irawan

Balai Penelitian dan Pengembangan Lingkungan Hidup dan Kehutanan Manado

Author-ID : 2485909

Agriculture, Biological Sciences & Forestry Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Social Sciences

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Growth Comparison of Red Jabon in North Bolaang Mongondow and North Minahasa arif irawan; Hanif Nurul Hidayah
Jurnal Wasian Vol 3, No 1 (2016): Jurnal Wasian
Publisher : Balai Penerapan Standar Instrumen Lingkungan Hidup dan Kehutanan (BPPLHK)Manado

Red Jabon is priority species that projected to be developed in plantation forests of North Minahasa Regency. Red Jabon is can adapt well various environmental conditions. The natural habitat of the red Jabon in North Sulawesi region was known in North Bolaang Mongondow. This study aimed to compare the growth of red jabon at the age of 1 year in North Minahasa Regency and North Bolaang Mongondow. The experiment was conducted in two (2) locations i.e. in Talawaan Village (North Minahasa Regency) and Nunuka Village (North Bolaang Mongondow). Two independent samples t test was conducted to determine the differences in height and diameter growth parameters at two test sites.The results showed that there was no difference in the growth of red Jabon between North Minahasa and North Bolaang Mongondow. The average height and diameter of red Jabon in North Minahasa Regency is at 215.84 cm and 4.34 cm, while the same parameters of North Bolaang Mongondow amounted to 231.79 cm and 4.14 cm. The development efforts on the plantations of red Jabon North Minahasa Regency need to be improved because of the environmental conditions in this region is very suitable for the growth of red Jabon.

The Effect of Weaning Tecnique to Survival Rate and Height Growth of Nyamplung (Calophyllum inophyllum) Plant Ady Suryawan; Arif Irawan
Jurnal Wasian Vol 4, No 1 (2017): Jurnal Wasian
Publisher : Balai Penerapan Standar Instrumen Lingkungan Hidup dan Kehutanan (BPPLHK)Manado

Technical rehabilitation planning of BPDAS Tondano on coastal area has reached 10,000 hectares, thus require many seedlings. Nyamplung has potential as rehabilitation plant in coastal at the same time it can support national demand of biofuel. However the nurseries of nyamplung in North Sulawesi are not optimal and need appropriate information of weaning method. This research used completely randomized design with three treatment factors, namely 1) Cutting the leaves consist of two levels ie D1 (pair leaves) and D2 (intact leaf); 2) Cutting intact seeds, consists of two levels i.e B1 (removed seed) and B2 (intact seeds); and 3) Cutting the roots lenght consist of three levels i.e A1 (5 cm), A2 (10 cm) and A3 (15 cm). There were 180 seedlings taken from seed that germinated using cocopeat media. Results of variance analysis showed that the applied treatment only affect the heigth growth. The survival rate is not affected by all treatments or in the other words survival rate reached 100 %. The treatments on leaves and seeds gave significant effect, on the contrary with root treatment. The treatment of intact leaf (D2) and intact seeds (B2) produced the best height growth responses i.e 4.60 cm and 4.63 cm. Keywords: Calophyllum inophyllum, survival rate, weaning technique, height

Shade Effect on Growth and Quality of Cempaka Wasian Seedling (Magnolia tsiampaca (Miq.) Dandy) in Nursery Arif Irawan; Hanif Nurul Hidayah
Jurnal Wasian Vol 4, No 1 (2017): Jurnal Wasian
Publisher : Balai Penerapan Standar Instrumen Lingkungan Hidup dan Kehutanan (BPPLHK)Manado

Cempaka wasian (Magnolia tsiampaca (Miq) Dandy )) is one tree species with high economic value. Cempaka wasian development in the form of community forests in the province of North Sulawesi needs to be supported by the availability of quality seeds. Generally, plant has different effect towards light it received. This study aimed to determine the effect of shade intensity on the growth of seedlings in the nursery. The experimental design used in this research is completely randomized design. The treatments were tested among other shade with a density of 25 % (± 37,350 lux light intensity), the shade with a density of 50 % (± 19,100 lux light intensity) and shade with a density of 75 % (± 8,018 lux light intensity). The results showed that treatment with 50% shade density (± 19,100 lux light intensity) gives the best effect on the growth and quality of seedlings in the nursery.Keywords : cempaka wasian , shade , seeds

Analysis Of Tenurial Conflict In Production Forest Management Unit (Pfmu) Model Poigar Arif Irawan; Kristian Mairi; Sulistya Ekawati
Jurnal Wasian Vol 3, No 2 (2016): Jurnal Wasian
Publisher : Balai Penerapan Standar Instrumen Lingkungan Hidup dan Kehutanan (BPPLHK)Manado

This Research aims to determine (1) History, actors and the causes of conflict in terms of the social aspect of economic, cultural and institutional happened in PFMU Model Poigar (2) Recommendations settlement to parse tenurial conflicts PFMU Model Poigar. Data analysis method used is a qualitative approach. The results showed that land claims by communities began of forest utilization activities to meet basic needs. Tenurial conflicts PFMU Model Poigar is a structural conflict. Some of the main actors should receive priority attention is the processing community land in the area and local employers. Some of the basic causes of conflict tenurial PFMU Model Poigar is a lack of understanding about the existence of related parties PFMU Model Poigar, the dualism of authority, lack of community empowerment, and law enforcement is still weak.Based on consideration of the history, the actors involved and the cause of the conflict, then some of the recommendation of this study is the institutional strengthening KPHP Poigar model, the development of that partnership, and law enforcement.

Co-Authors Ady Suryawan Darwo Darwo Darwo Hanif Nurul Hidayah Hanif Nurul Hidayah Iwanuddin Iwanuddin Jafred Elsjoni Halawane Kristian Mairi Lis Nurrani Nina Mindawati Sulistya Ekawati Sulistya Ekawati Supratman Tabba

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