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Serangan Ulat Jengkal (Hyposidra talaca Wlk.) Pada Bibit Pakoba (Syzygium luzonense (Merr.) Merr.) Di Persemaian Hidayah, Hanif Nurul; Irawan, Arif; Anggraini, Illa
Agrologia Vol 6, No 1 (2017)
Publisher : Pattimura University, Ambon

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Abstract

Obstace of pakoba (Syzygium luzonense (Merr.) Merr.) cultivation in nursery is  twig caterpillar (Hyposidra talaca WLK) attacks. The Pest symptoms was holes in the leaves especially young leaves; twig caterpillar enable to attack all leaves of pakoba seed. Severe attacks cause death of seedlings. There are five blocks in pakoba nursery that were observed; 1014 pakoba seedlings were grown in these blocks. The average percentage of twig caterpillar’s attack was quite high, reached 49.34%. Twig caterpillar has been controlled by integrated pest management. Chemical control to decrease twig caterpillars attack in nursery has been done by using half dose of insecticide profenofos.
TEKNIK PENYIMPANAN SEMAI CEMPAKA WASIAN (Elmerrilia ovalis (Miq.) Dandy) MENGGUNAKAN ZAT PENGHAMBAT TUMBUH DAN PERLAKUAN MEDIA TANAM (The Techniques of Storing Cempaka Wasian (Magnolia tsiampaca (Miq.) Dandy) using Growth Inhibitor and Planting Media Treatment) Irawan, Arif; Halawane, Jafred Elsjoni; Hidayah, Hanif Nurul
Jurnal Penelitian Hutan Tanaman Vol 15, No 2 (2018): JURNAL PENELITIAN HUTAN TANAMAN
Publisher : Pusat Penelitian dan Pengembangan Hutan

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Abstract

ABSTRACTCempaka wasian (Magnolia tsiampaca (Miq) Dandy) is a forest tree species that has recalcitrant seed character. Recalcitrant seeds are difficult to be stored for a long period, thus storing the seedlings can be considered as an option. This research aims to determine the effect of growth inhibitors and planting media on seedling growth during storage. The inhibitors used were paclobutrazol 250 ppm, NaCl 0,5% and aquadest (as control treatment). The media used consisted of top soil+cocopeat (1:1), top soil+sand(1:1) and top soil+husk charcoal (1:1). The research design used was a complete randomized factorial pattern design. The results showed that the inhibitors had a significant effect on the growth os seedling height. Provision of 250 ppm paclobutrazol was able to inhibit the growth of seedling height. Planting media also had a significant effect on the growth of height and diameter of the seedlings, also on seed quality index of cempaka wasian. The soil+cocopeat and soil+sand planting media are effective to reduce the growth rate in both height and diameter of cempaka wasian seedlings during storage. Key words: Cempaka, growth inhibitors, planting media, seedling ABSTRAKCempaka wasian (Magnolia tsiampaca (Miq) Dandy) adalah salah satu jenis pohon hutan yang memiliki karakter benih rekalsitran yang sulit disimpan dalam jangka waktu lama, sehingga perlu dilakukan penyimpanan dalam bentuk semai dengan menggunakan bahan semai. Tujuan penelitian ini adalah untuk mengetahui pengaruh bahan penghambat pertumbuhan dan media tanam terhadap pertumbuhan semai cempaka wasian selama masa penyimpanan. Bahan penghambat pertumbuhan yang digunakan adalah paklobutrazol 250 ppm, NaCl 0,5%, dan akuades sebagai kontrol. Media tanam terdiri dari tanah+cocopeat (1:1), tanah+pasir (1:1), dan tanah+arang sekam (1:1). Rancangan percobaan yang digunakan adalah rancangan acak lengkap pola faktorial. Hasil penelitian menunjukkan faktor zat penghambat tumbuh memberikan pengaruh yang nyata terhadap pertumbuhan tinggi bibit. Pemberian paklubutrazol 250 ppm mampu menghambat pertumbuhan tinggi bibit. Faktor media tanam memberikan pengaruh nyata terhadap pertumbuhan tinggi, diameter, dan indeks mutu bibit cempaka wasian. Media tanam tanah+sabut kelapa dan tanah+pasir merupakan media yang efektif mengurangi kecepatan pertumbuhan tinggi dan diameter semai cempaka wasian selama penyimpanan.Kata kunci: Cempaka, bahan penghambat pertumbuhan, media tanam, semai  
Suitability of Cocopeat as a Transplanting Media in the Polytube of Magnolia elegans (Blume.) H. Keng Seedlings Irawan, Arif; Hidayah, Hanif Nurul
Jurnal Wasian Vol 1, No 2 (2014): Jurnal Wasian
Publisher : Balai Penelitian Kehutanan Manado

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Abstract

This study aims to determine the suitability of using cocopeat as planting media at transplanting containers in the polytube of the cempaka seedlings growth.  The method used in this research was implementing a trial use of cocopeat as transplanting media in the polytube and being compared to the growth of cempaka seedlings in polytubes and polybags containing topsoil.  The parameters observed included percent survival (%), height (cm), and diameter (cm) of the plants.  Through the t-test it was shown that the parameters of diameter, height, and percent survival of the cempaka seedlings using cocopeat as a transplanting media were significantly different than those using top soil as a transplanting media. 
Identification Causes Leaf Spot Disease in Cempaka (Magnolia elegans (Blume.) H.Keng) Seedling and Its Control Techniques (Identifikasi Penyebab Penyakit Bercak Daun Pada Bibit Cempaka (Magnolia Elegans (Blume.) H.Keng) dan Teknik Pengendaliannya) Irawan, Arif; Anggraeni, Ilaa; Christita, Margaretta
Jurnal Wasian Vol 2, No 2 (2015): Jurnal Wasian
Publisher : Balai Penelitian Kehutanan Manado

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Abstract

This research purposes to identify the pathogen causing leaf spot in cempaka seedling and its control technique. Identify cause of disease is necessary to know precise technique control. Identification of disease was conducted in macroscopic appearances and microscopically to determine pathogens. Identification is done by using the determination key of fungi. The results showed that the early signs of leaf spot disease on cempaka seedlings in the nursery are streaks or spots on the leaf surface with distinct boundaries. Leaf spots are formed generally brown surrounded by darker boundaries. The result shows leaf spot disease on cempaka seedling was caused by fungal pathogen Colletotrichum sp. Techniques for controlling the disease can be done by isolating the infected seeds, reducing the intensity of canopy, and using the appropriate fungicides.
Effectivity of Using Growth Retardants on Shorea assamica Dyer Seedling at Nursery Irawan, Arif; Iwanuddin, Iwanuddin
Jurnal Wasian Vol 2, No 1 (2015): Jurnal Wasian
Publisher : Balai Penelitian Kehutanan Manado

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Abstract

The use of growth retardants widely used as a solution in the storage material for the propagation of plant species that have recalcitrant seed types. White meranti (S.assamica) is one kind of commercial timber from dipterocarp family found in Sulawesi. This species is one of the types of plants that have the type of recalcitrant seeds. This study aims to determine the effectiveness of using growth retardants in the nursery.The experimental design used in this research is completely randomized design. The results showed the use of growth retardants provide excellent effectiveness in inhibiting the growth of seedling of S.assamica. Paklobutrazol of 250 ppm is a the best treatment that can provide growth inhibition. Percentage of growth inhibition of seedling age of 6 months amounted to 75,14 % (height) and 33,33% (diameter).
Shade Effect on Growth and Quality of Cempaka Wasian Seedling (Magnolia tsiampaca (Miq.) Dandy) in Nursery Irawan, Arif; Hidayah, Hanif Nurul
Jurnal Wasian Vol 4, No 1 (2017): Jurnal Wasian
Publisher : Balai Penelitian dan Pengembangan Lingkungan Hidup dan Kehutanan (BPPLHK)Manado

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Abstract

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
Growth response of Shorea assamica Dyer seedlings to shading leveland growth inhibitor treatments Irawan, Arif; Darwo, Darwo
Jurnal Penelitian Kehutanan Wallacea Vol 6, No 1 (2017): Jurnal Penelitian Kehutanan Wallacea
Publisher : Balai Penelitian dan Pengembangan Lingkungan Hidup dan Kehutanan Makassar

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Abstract

Shorea assamica Dyer is one of the forest trees with recalcitrant seed type, It can not be stored for long periods. Storage technique of planting material in the form of seedlings is one solution that can be done to overcome the problems of the seeds with a short shelf life. The aim of the research is to determine the growth response of S. assamica seedlings toshading andgrowth inhibitor treatments. Research design was approached by split plot design. The main plot was shade and sub-plot was a growth inhibitor. The storage conditions consisted of (1) light (38,600-47,200 lux), (2) medium (19,342-35,300 lux) and (3) heavy shading (62-2,106 lux). The inhibitors used were (1) paclobutrazol 250 ppm, (2) NaCl 0.5% and (3) aquadest (as a control). The results showed that the combined treatment of paclubutrazol 250 ppm with heavy shade was able to suppress the growth of height, dry weight of root and seedling quality index of S. assamica at the age of 6 months optimally in nursery.
Suitability of Cocopeat as a Transplanting Media in the Polytube of Magnolia elegans (Blume.) H. Keng Seedlings Irawan, Arif; Hidayah, Hanif Nurul
Jurnal Wasian Vol 1, No 2 (2014): Jurnal Wasian
Publisher : Balai Penelitian dan Pengembangan Lingkungan Hidup dan Kehutanan (BPPLHK)Manado

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Abstract

This study aims to determine the suitability of using cocopeat as planting media at transplanting containers in the polytube of the cempaka seedlings growth.  The method used in this research was implementing a trial use of cocopeat as transplanting media in the polytube and being compared to the growth of cempaka seedlings in polytubes and polybags containing topsoil.  The parameters observed included percent survival (%), height (cm), and diameter (cm) of the plants.  Through the t-test it was shown that the parameters of diameter, height, and percent survival of the cempaka seedlings using cocopeat as a transplanting media were significantly different than those using top soil as a transplanting media. 
Effect of Shade and NPK Fertilizer on the Growth of Shorea assamica Dyer in the Nursery Irawan, Arif; Halawane, Jafred E.
Jurnal Perbenihan Tanaman Hutan Vol 4, No 2 (2016): Jurnal Perbenihan Tanaman Hutan
Publisher : Forest Tree Seed Technology Research & Development Center (FTSTRDC)/ Balai Penelitian dan

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Abstract

Shorea assamica Dyer is one of endangered species in the North Sulawesi. The species has high economic value, however information about technique of silviculture and its conservation are very limited. The research aims to determine the effect of shade and the use of NPK (15:15:15) fertilizer on growth rate of S.assamica in the nursery. The design was applied in this reserach according to randomized complete design with split plot design. The main plot was shade level and the sub plot was NPK fertilizer level. The treatments were covering four levels of NPK fertilizer (0; 0.25; 0.50 and 0.75 g/seedling) and three levels of shade (light, medium, and heavy). The results showed that the best combination of treatments for height and diameter growth, seedling dry weight, and seedling quality index of S. assamica on 6 months age was NPK fertilizer dosage of 0.5 g/seedling in moderate shade.
Analysis Of Tenurial Conflict In Production Forest Management Unit (Pfmu) Model Poigar Irawan, Arif; Mairi, Kristian; Ekawati, Sulistya
Jurnal Wasian Vol 3, No 2 (2016): Jurnal Wasian
Publisher : Balai Penelitian dan Pengembangan Lingkungan Hidup dan Kehutanan (BPPLHK)Manado

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Abstract

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.