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Jurnal Penelitian Hutan Tanaman
Published by Badan Penelitian dan Penegembangan Kehutanan
ISSN : 18296327     EISSN : 24428930     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Decision Sciences, Operations Research & Management
Arjuna Subject : -
Articles 427 Documents
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Pengaruh Tutupan Tajuk terhadap Pertumbuhan Dryobalanops lanceolata Burck pada Umur 5 Tahun (The Effect of Canopy on Growth of Dryobalanops lanceolata Burck. on Five Old) Muhammad Reza Triatmojo; Prijanto Pamoengkas; Darwo Darwo
Jurnal Penelitian Hutan Tanaman Vol 19, No 1 (2022): Jurnal Penelitian Hutan Tanaman
Publisher : Pusat Penelitian dan Pengembangan Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jpht.2022.19.1.47-55

Abstract

ABSTRACT Dipterocarp species are the mainstay of forest products in the form of carpentry wood. Preserving the Dipterocarpaceae species of Dipterocarp Forest Plantation is important. This study aims to determine the percentage of optimal canopy cover for the growth of D. lanceolata. Furthermore, primary data were obtained by measuring and observing the growth of D. lanceolata in the form of diameter at breast height, tree height, the percentage of canopy, and environmental conditions (temperature and humidity). Meanwhile, secondary data, which was in the form of initial growth data when D. lanceolata, was newly planted and the general condition of the study site. The relationship between the percentage of canopy cover and growth in diameter and height of D. lanceolata aged 5 years growing in KHDTK Haurbentes has a significant effect but it has a low correlation. In addition, D. lanceolata can grow in the canopy cover percentage range of 40% - 65%.Keywords: Dryobalanops lanceolata, growth, canopy cover, diameter, heightABSTRAKJenis-jenis Dipterocarpaceae menjadi andalan dalam produk hasil hutan berupa kayu pertukangan. Upaya melestarikan jenis-jenis Dipterocarpaceae dengan membangun hutan tanaman Dipterocarpaceae menjadi penting. Penelitian ini bertujuan untuk mengetahui sejauh mana tutupan tajuk dan kondisi lingkungan mempengaruhi pertumbuhan Dryobalanops lanceolate pada umur 5 tahun setelah tanam. Data primer didapat dengan melakukan pengukuran dan pengamatan terhadap pertumbuhan D. lanceolata berupa diameter setinggi dada, tinggi pohon, persentase tutupan tajuk dan kondisi lingkungan (temperatur dan kelembaban). Metode penelitian dengan menganalisis hubungan antara persentase penutupan tajuk tidak berpengaruh terhadap diameter dan tinggi tanaman. Hasil penelitian menunjukkan bahwa pada umur tegakan 5 tahun ternyata tutupan tajuk tidak mempengaruhi pertumbuhan diameter maupun tinggi D. lanceolata. Tegakan D. lanceolata pada tingkat tiang sudah tidak memerlukan naungan. Tegakan D. lanceolata dapat tumbuh pada rentang persentase tutupan tajuk antara 40%-65%.Kata kunci : Dryobalanops lanceolata, pertumbuhan, tutupan tajuk, diameter, tinggi
Strategi Pemanfataan Lahan Gambut Berkelanjutan di Areal eks PLG Kalimantan Tengah (The utilization strategis of sustainability peatlands in ex PLG Areas, Central Kalimantan) Irma yeny, S.P., M.Sc.; Endang Karlina; Raden Garsetiasih; Renny Sawitri
Jurnal Penelitian Hutan Tanaman Vol 19, No 1 (2022): Jurnal Penelitian Hutan Tanaman
Publisher : Pusat Penelitian dan Pengembangan Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jpht.2022.19.1.57-73

Abstract

AbstractPeatlands play a major role for mitigating greenhouse gases, regulating water management, conserving habitat for wildlife species, and economically providing various non-timber forest products. However, some of these peatlands have been degraded, such as peatlands in the ex PLG area of Central Kalimantan. On the other hand, the need for agricultural land to improve the community's economy encourages the use of peatlands as agricultural areas. The utilization of peatlands has pros and cons due to the failure of previous management. This study aims to identify internal and external factors to formulate strategies for sustainable use of ex-PLG peatlands in Central Kalimantan. Data collection was conducted using a survey method with interview techniques with the help of a questionnaire. The analytical method used wass SWOT analysis. The results showed that the calculation of internal factors (strengths and weaknesses) and external factors (opportunities and threats) resulted in the coordinates of the Cartesian diagram located at (0.42; -0.26). The coordinates are in quadrant II, which is a strategy that used the strength factors and minimized the threats threat factor. The formulation of strategies that can be carried out are: (1) adoption of local wisdom in peat management, (2) spatial arrangement in the use of peatlands for multi-sectoral purposes, and (3) control of illegal hunting and wildlife conflicts.Keywords: Land suitability, utilization strategy, SWOT, Peatland DevelopmentAbstrakLahan gambut berperan besar dalam mitigasi gas rumah kaca, pengatur tata air, habitat beragam jenis satwa, dan secara ekonomi mampu menyediakan berbagai hasil hutan bukan kayu. Namun demikian, sebagian lahan gambut tersebut kini telah terdegradasi seperti lahan gambut di areal ex-PLG Kalimantan Tengah. Di sisi lain kebutuhan lahan pertanian untuk peningkatan ekonomi masyarakat mendorong pemanfaatan lahan gambut sebagai areal pertanian.  Pemanfaatan lahan gambut tersebut menemui pro dan kontra akibat kegagalan pengelolaan sebelumnya.  Penelitian ini bertujuan untuk mengindentifkasi faktor internal dan eksternal untuk merumuskan strategi pemanfaatan lahan gambut ex-PLG di Kalimantan Tengah secara berkelanjutan. Pengumpulan data dilakukan menggunakan metode survey teknik wawancara dengan bantuan kuesioner. Metode analisis yang digunakan adalah analisis SWOT. Hasil penelitian menunjukkan perhitungan faktor internal (kekuatan dan kelemahan) dan eksternal (peluang dan ancaman) menghasilkan titik koordinat pada diagram cartesius terletak pada (0,42; -0,26). Titik koordinat tersebut berada pada kuadran II yaitu strategi yang menggunakan faktor kekuatan  dan meminimalkan faktor ancaman. Rumusan strategi yang dapat dilakukan yaitu: (1) adopsi kearifan lokal dalam pengelolaan gambut, (2) pengaturan tata ruang dalam pemanfaatan lahan gambut untuk kebutuhan multisektoral, dan (3) pengendalian perburuan satwa dan konflik satwa.Kata Kunci: Kesesuaian lahan, strategi pemanfaatan, SWOT, Pengembangan Lahan Gambut
Pengaruh Penambahan Arang Sekam terhadap Pertumbuhan Semai Sengon (Falcataria moluccana (Miq.) Barneby & J.W.Grimes) dan Jati (Tectona grandis L.f.) (The Effect of Addtion of Husk Charcoal on the Growth of Sengon (Falcataria moluccana (Miq.) Barneby & J.W.Grimes) and Teak (Tectona grandis L.f.) Seedlings) Adraisna Airansi; Indriyanto Indriyanto; Ceng Asmarahman
Jurnal Penelitian Hutan Tanaman Vol 19, No 2 (2022): Jurnal Penelitian Hutan Tanaman
Publisher : Pusat Penelitian dan Pengembangan Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jpht.2022.19.2.111-122

Abstract

ABSTRACTOne of the factors directly influencing good seedling growth is the conditions of the weaning media. The most frequently used seedling weaning medium is humus soil or topsoil, the most fertile soil type. The content of organic matter in the soil media is only 5%. Therefore, adding organic matter is needed as a mixture in seedling weaning media. One of the organic materials commonly used is husk charcoal. The research objectives were to determine the effect of husk charcoal dose addition to the soil as a weaning medium on the sengon and teak seedlings. The experimental units were arranged in Completely Randomized Design with 5 types of treatment, namely 100% soil, 80% soil + 20% husk charcoal, 60% soil + 40% husk charcoal, 40% soil + 60% husk charcoal, and 20% soil + 80% husk charcoal. The results showed that husk charcoal media composition of up to 40% and 100% soil media was the best proportion for teak seedlings. Meanwhile, a good proportion to be used as a medium for weaning sengon seedlings is 80% soil media + 20% husk charcoal and 20% soil media + 80% husk charcoal.Keywords: Growth, growing media, husk charcoal, sengon, teak.ABSTRAKPertumbuhan semai yang baik dipengaruhi secara langsung salah satunya oleh kondisi media penyapihan semai. Media penyapihan semai yang paling sering digunakan adalah tanah humus atau tanah lapisan atas (top soil) yang merupakan jenis tanah paling subur. Kandungan bahan organik yang ada dalam media tanah hanya 5%. Oleh karena itu, penambahan bahan organik sangat diperlukan sebagai campuran pada media penyapihan semai. Salah satu bahan organik yang biasa digunakan yaitu arang sekam. Penelitian bertujuan untuk mengetahui pengaruh dosis media tanam arang sekam terhadap pertumbuhan semai sengon dan jati. Penelitian menggunakan rancangan acak lengkap dengan perlakuan terdiri atas 5 macam, yaitu tanah 100%, tanah 80% + arang sekam 20%, tanah 60% + arang sekam 40%, tanah 40% + arang sekam 60%, dan tanah 20% + arang sekam 80%. Hasil penelitian menunjukkan bahwa penggunaan komposisi media arang sekam sampai batas 40% dan media tanah 100% merupakan proporsi yang paling baik untuk semai jati. Proporsi yang baik untuk digunakan sebagai media penyapihan semai sengon adalah penggunaan media tanah 80% + arang sekam 20% dan media tanah 20% +arang sekam 80%.Kata kunci: Pertumbuhan, media tanam, arang sekam, sengon, jati.
Keragaman Pertumbuhan dan Heritabilitas Bibit Mahoni Daun Lebar Dari Beberapa Famili Penyusun Kebun Benih Semai di Parung Panjang, Bogor Mashudi Mashudi; Darwo Darwo; Mudji Susanto; Liliana Baskorowati; Rina Laksmi Hendrati
Jurnal Penelitian Hutan Tanaman Vol 19, No 2 (2022): Jurnal Penelitian Hutan Tanaman
Publisher : Pusat Penelitian dan Pengembangan Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jpht.2022.19.2.179-188

Abstract

ABSTRACT Swietenia macrophylla is an important timber producer in Indonesia. The purpose of this study was to determine the growth variation and heritability values of Swietenia macrophylla seedlings at 6 months of age from several families from the seedling seed orchard in Parung Panjang Special Purpose Forest Area (KHDTK), Bogor. The research design used was a completely randomized design (CRD) with family treatment. There were 28 families observed in this study, with each family consist of 16 individual plants (4 replications with 4 seedlings per replication). Analysis of variance showed that family had a significant effect on growth in height, stem diameter, and sturdiness quotient of 6 months old of S. macrophylla seedlings. The results of the Duncan test showed that the height of the separate seedlings in 10 groups was different with an average of 37.46 cm, the diameter of the separate stems in 9 groups was different with an average of 0.50 cm and the separate sturdiness quotient in the 12 groups was different with the mean amounting to 7.53. Individual heritability and family heritability of height, stem diameter and sturdiness quotient are included into high category. Keywords: Family; heritability; seedling; Swietenia macrophylla, variationABSTRAK Mahoni daun lebar  menghasilkan kayu pertukangan yang cukup banyak diperdagangkan di Indonesia. Penelitian ini bertujuan untuk mengetahui keragaman pertumbuhan dan nilai heritabilitas bibit mahoni daun lebar umur 6 bulan dari beberapa famili penyusun Kebun Benih Semai di Kawasan Hutan Dengan Tujuan Khusus (KHDTK) Parung Panjang, Bogor. Rancangan penelitian yang digunakan adalah Rancangan Acak Lengkap (RAL) dengan perlakuan famili. Sejumlah 28 famili digunakan dalam studi ini dengan pengamatan 16 individu tanaman tiap famili (4 ulangan dengan masing-masing ulangan 4 bibit). Analisis varians menunjukkan bahwa famili berpengaruh nyata terhadap pertumbuhan tinggi, diameter batang dan indeks kekokohan bibit mahoni daun lebar umur 6 bulan. Hasil uji Duncan menunjukkan bahwa tinggi bibit terpisah dalam 10 kelompok perbedaan dengan rata-rata sebesar 37,46 cm, diameter batang terpisah dalam 9 kelompok perbedaan dengan rata-rata sebesar 0,50 cm dan indeks kekokohan terpisah dalam 12 kelompok perbedaan dengan rata-rata sebesar 7,53. Heritabilitas individu dan heritabilitas famili tinggi bibit, diameter batang dan indeks kekokohan termasuk dalam kategori tinggi.Kata kunci:  Bibit; famili; heritabilitas; keragaman; mahoni daun lebar
Kesesuaian Lahan Tanaman Jahe, Kencur, Kunyit, dan Serai Wangi sebagai Komoditas Agroforestri di KHDTK Gunung Bromo, Kabupaten Karanganyar (Study of Land Suitability for Ginger, Aromatic Ginger, Turmeric, and Citronella as Agroforestry Commodities at Gunung Bromo Research Forest, Karanganyar District) Dwi Priyo Ariyanto; Ardiana Rahma Wijayanti; Rahayu Rahayu; Jaka Suyana
Jurnal Penelitian Hutan Tanaman Vol 19, No 2 (2022): Jurnal Penelitian Hutan Tanaman
Publisher : Pusat Penelitian dan Pengembangan Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jpht.2022.19.2.75-89

Abstract

ABSTRACTMedicinal plants can be used in optimizing the use of land under forest stands. Land suitability needs to determine the types of plants that potential to be developed. This study aims to determine the types of medicinal plants that have the potential to be developed based on the characteristics of the land. This research is a descriptive method, determining the sample point using the transect method, and data analysis using the matching method to determine the land suitability of several types of medicinal plants, ginger, turmeric, aromatic ginger, and citronella. The results showed that the actual land suitability class is marginally suitable (S3) in land unit 9 - land unit 10 and not suitable (N) in other land units for ginger, aromatic ginger, and turmeric, while lemongrass is marginally suitable (S3) in all land unit. The limiting factors of land suitability class are the slope, soil pH, and the availability of P nutrients. Management efforts that can be carried out are making terracing, liming, and fertilizing.Key words: Medicinal, plants, land suitability, management effortsABSTRAKDalam upaya optimalisasi pemanfaatan lahan di bawah tegakan hutan, tanaman obat dapat digunakan sebagai alternatif tanaman untuk dikembangkan. Kajian kesesuaian lahandiperlukan untuk mengetahui jenis-jenis tanaman obat yang berpotensi dikembangkan berdasarkan karakteristik lahan. Jenis penelitian ini, yaitu penelitian deskriptif, penentuantitik sampel menggunakan transek, dan analisis data menggunakan metode matching untuk mengetahui kesesuaian lahan beberapa jenis tanaman obat, yaitu jahe, kunyit, kencur, dan serai wangi. Hasil penelitian menunjukkan kelas kesesuaian lahan aktual sesuai marginal (S3) pada SPL 9 - SPL 10 dan tidak sesuai (N) pada SPL lainnya untuk jenis tanaman jahe, kencur, dan kunyit sedangkan pada jenis tanaman serai wangi sesuai marginal (S3) padasemua SPL. Faktor pembatas pada kelas kesesuaian lahan, yaitu kemiringan lereng, pHtanah, dan ketersediaan hara P. Upaya pengelolaan pada faktor pembatas yaitu pembuatan terasering, pengapuran dan pemupukan. Kata kunci: Tanaman obat, kesesuaian lahan, upaya pengelolaan
Indeks Kualitas Tempat Tumbuh Tegakan Bambang Lanang di Sumatera Selatan (Site Index of Bambang Lanang Stand in South Sumatera) Hengki Siahaan; Agus Sumadi; Purwanto Purwanto; Made Hesti Lestari Tata
Jurnal Penelitian Hutan Tanaman Vol 19, No 2 (2022): Jurnal Penelitian Hutan Tanaman
Publisher : Pusat Penelitian dan Pengembangan Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jpht.2022.19.2.165-177

Abstract

ABSTRACTSite index is indispensable in the management of plantation forests, including the bambang lanang (Magnolia champaca) community forest which has long been cultivated as timber-producing trees in South Sumatera Province.  This research is aimed to produce a site index model of bambang lanang stands developed on small-scale private forests in South Sumatra. Site index was developed by phytocentric and geocentric methods respectively using dominant height and site characteristic data from 22 permanent sample plots spread over various development areas from the lowland to the highland. Based on phytocentric methods, the site index model of bambang lanang stand were expressed by four dominant height (Ho) equation of Ln Ho = 3.1033-3.2406(1/A), Ln Ho = 3.2658-3.2406(1/A), Ln Ho = 3.4055-3.2406(1/A) and Ln Ho = 3.5282-3.2406(1/A) respectively for site index of 17 m, 20 m, 23 m, and 26 m. Furthermore, the site index was classified into five classes of sites I, II, III, IV, and V with a dominant height range of <17 m, 17-20 m, 20-23 m, 23-26 m, and >26 m. Meanwhile, based on geocentric methods, the site index of Bambang Lanang was expressed by the equation of Si = -6.709-0.010 altitude + 5.255 pH (KCl)+ 0,171 clay percentage + 0,184 solum + 1.070 Al saturation + 7.698 total N.Keywords: Bambang lanang, site index, site characteristicsABSTRAKIndeks kualitas tempat tumbuh sangat diperlukan dalam pengelolaan hutan tanaman termasuk hutan rakyat bambang lanang (Magnolia champaca) yang telah lama dibudidayakan sebagai pohon penghasil kayu pertukangan di Provinsi Sumatera Selatan. Penelitian ini bertujuan untuk menghasilkan model kualitas tempat tumbuh bambang lanang yang dikembangkan pada hutan rakyat di Sumatera Selatan. Indeks kualitas tempat tumbuh dibangun dengan metode phytocentric dan geocentric, masing-masing menggunakan data peninggi dan karakteristik tempat tumbuh 22 petak ukur permanen yang tersebar di berbagai lokasi pengembangan dari dataran rendah hingga dataran tinggi. Berdasarkan metode phytocentric, model kualitas tempat tumbuh tegakan bambang lanang digambarkan melalui empat persamaan peninggi (Ho) yaitu Ln Ho = 3.1033-3.2406(1/A), Ln Ho = 3.2658-3.2406(1/A), Ln Ho = 3.4055-3.2406(1/A) and Ln Ho = 3.5282-3.2406(1/A) masing-masing untuk indeks kualitas tapak 17 m, 20 m, 23 m, dan 26 m. Selanjutnya indeks kualitas tempat tumbuh diklasifikasikan menjadi lima kelas kualitas tempat tumbuh yaitu kelas I, II, III, IV, dan V dengan kisaran peninggi < 17 m, 17-20 m, 20-23 m, 23-26 m, dan > 26 m. Sementara berdasarkan metode geocentric, indeks kualitas tempat tumbuh bambang lanang dengan persamaan Si = -6.709-0.010 altitude + 5.255 pH (KCl)+ 0,171 clay percentage + 0,184 solum + 1.070 Al saturation + 7.698 total N.Kata kunci: Bambang lanang, indeks kualitas tempat tumbuh, karakteristik tempat tumbuh
Analisis Vegetasi Model Hutan Kota: Studi Kasus KHDTK Cikampek di Purwakarta, Jawa Barat (Vegetation Analysis of Urban Forest Model: A Case Study of KHDTK Cikampek in Purwakarta, West Java) Mira Yulianti; Ahmad Gadang Pamungkas; Mamay Maisaroh; Serlina Hestiani Oktian; Nurul Silva Lestari; Donny Wicaksono; Lutfy Abdulah; Muhammad Abdul Qirom; Rachman Effendi
Jurnal Penelitian Hutan Tanaman Vol 19, No 2 (2022): Jurnal Penelitian Hutan Tanaman
Publisher : Pusat Penelitian dan Pengembangan Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jpht.2022.19.2.123-136

Abstract

ABSTRACTThe pressure on the existence of stands in urban areas is very high, while the nature of Special Purpose Forest Areas (KHDTK) is open and easily accessible. As a result, the existence of stands is easily threatened. The purpose of the study was to determine the potential of KHDTK to be used as a reference for tree species selection to support urban forest development. The data was collected using the inventory method. The number of sample plots is 32 plots, which were determined using purposive sampling. The plot size is 20 x 20m, with subplots of 10 m x 10 m, 5 m x 5 m, and 2 m x 2 m. Analysis of the data includes the importance value index, diversity index, richness index, evenness index, anddominance index. The results showed that four species grew well and were able to naturally regenerate in urban forests, such as H. courbaril, P. mooniana, S. mahagoni, and T. verrucosum. The index of diversity, dominance, richness, and evenness of species is classified as moderate. Tree species with natural regeneration capacity that were found in KHDTK Cikampek have the potential to be used in the development of urban forests but need to consider their agro climatic suitability.Keywords: Urban Forest, diversity index, tree species ABSTRAKTekanan keberadaan tegakan di wilayah perkotaan sangat tinggi, sementara sifat Kawasan Hutan Dengan Tujuan Khusus (KHDTK) terbuka dan mudah diakses. Hal ini mengakibatkan tegakan KHDTK mudah terancam. Tujuan penelitian adalah mengetahui potensi KHDTK sebagai rujukan jenis pohon untuk mendukung pembangunan hutan kota. Pengumpulan data dilakukan dengan menggunakan metode inventarisasi. Jumlah plot contoh yang dibangunsebanyak 32 plot dengan penentuan lokasi secara purposive sampling. Setiap unit plot contoh berukuran 20 x 20 m, dengan subplot 10 m x 10 m, 5 m x 5 m, dan 2 m x 2 m. Analisis data tegakan meliputi indeks nilai penting, indeks keragaman jenis, indeks kekayaan jenis, indeks kemerataan jenis, dan indeks dominansi. Hasil penelitian menunjukkan bahwa terdapat empat jenis yang tumbuh baik dan mampu mengalami permudaan secara alami di hutan kota, yaitu H. courbaril, P. mooniana, S. mahagoni dan T. verrucosum. Indeks keragaman, dominansi, kekayaan dan kemerataan jenis tergolong sedang. Jenis-jenis tumbuhan dengan kemampuan regenerasi alami yang terdapat di KHDTK Cikampek berpotensi untuk digunakan dalam pembangunan hutan kota, namun harus disesuaikan dengan kondisi agroklimatnya.Kata kunci: Hutan kota, indeks keragaman jenis, jenis pohon  
Peningkatan Kualitas Kokon dari Beberapa Persilangan Hibrida Ulat Sutra (Bombyx mori L.) (Improved Cocoon Quality of Multiple Silkworms (Bombyx mori L.) Hybrid Crosses) Retno Agustarini; Lincah Andadari; Yetti Heryati; Herman Sari; Eyet Mulyati
Jurnal Penelitian Hutan Tanaman Vol 19, No 2 (2022): Jurnal Penelitian Hutan Tanaman
Publisher : Pusat Penelitian dan Pengembangan Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jpht.2022.19.2.189-198

Abstract

ABSTRACTBombyx mori is a silk-producing insect with high economic value. As an agricultural country, Indonesia has great potential for developing the natural silk industry, but the problem of silkworm seeds constrains its implementation. The purebred crossing to develop hybrids is one of the efforts to overcome the problem of seed quality. The study aimed to obtain the performance of alternative races and candidates for silkworm seeds other than those already commercialized. The stages of rearing silkworms were carried out using a Randomized Block Design, with six treatments and three replications. The treatments conducted were: Japanese crosses (927 x 919 and 919 x 927), Chinese crosses (930 x 403, 403 x 930, 804 x P208, and P208 x 804). Crosses of Chinese races have advantages, especially in the short life cycle, morphological stability, number of eggs, and percentage of hatching to cocoon quality. The cross of 403 x 903 can be a superior hybrid alternative to develop because, overall, it shows high results on egg and cocoon quality. Keywords: Bombyx mori, cross, Chinese races, Japanese races, cocoonABSTRAKBombyx mori merupakan serangga penghasil sutra bernilai ekonomi tinggi. Indonesia sebagai negara agraris sangat potensial untuk pengembangan persutraan alam, namun dalam pelaksanaannya terkendala permasalahan bibit ulat sutra. Salah satu usaha mengatasi permasalahan kualitas bibit adalah pengembangan hybrid melalui persilangan ras murni. Tujuan penelitian adalah untuk mendapatkan performa ras dan kandidat bibit ulat sutra alternatif selain yang sudah dikomersialkan. Tahapan pemeliharaan ulat sutra dilakukan menggunakan rancangan penelitian Rancangan Acak Kelompok, dengan 6 perlakuan dan 3 ulangan. Perlakuan yang dilakukan: Persilangan ras Jepang (927 x 919 dan 919 x 927), persilangan ras China (930 x 403, 403 x 930, 804 x P208, P208 x 804). Persilangan galur dari ras China mempunyai keunggulan terutama pada pendeknya siklus hidup, stabilitas morfologi, jumlah telur dan presentase penetasan sampai dengan kualitas kokonnya. Persilangan 403 x 903 dapat menjadi alternatif hibrid unggulan untuk dikembangkan karena secara keseluruhan menunjukkan hasil tinggi pada kualitas telur dan kokon.Kata kunci:  Bombyx mori, persilangan, ras China, ras Jepang, kokon
RESPON PERTUMBUHAN SEMAI TANJUNG (Mimusops elengi Linn.) TERHADAP INTENSITAS CAHAYA DI ARBORETUM FAKULTAS KEHUTANAN UNIVERSTAS TADULAKO Zulkaidhah Zulkaidhah; Maulia Rahma; Wardah Wardah; Dewi Wahyun; Abdul Hapid
Jurnal Penelitian Hutan Tanaman Vol 19, No 2 (2022): Jurnal Penelitian Hutan Tanaman
Publisher : Pusat Penelitian dan Pengembangan Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jpht.2022.19.2.137-148

Abstract

ABSTRACTThe intensity of sunlight and the adequacy of nutrients in the soil greatly affect the growth and development of a plant because they will affect the process of photosynthesis. The type of plant itself largely determines the need for sunlight. Seedling tanjung (Mimusops elengi Linn.) is a type of plant that requires sunlight at the beginning of its growth. This plant also can adapt to the environment and air pollution, so that it can be developed as a protective tree in urban forest development programs. This research aimed to determine how the Tanjung seedling growth responds to the percentage of light intensity in the Arboretum of the Faculty of Forestry, Tadulako University. The study used a randomized block design with the proportion of light as the treatment. The treatments consisted of 100%, 55%, 30% and 10% light intensity. The results showed that the percentage of light intensity affected the development and growth of tanjung seedlings. The treatment with 100% and 55% light intensity gave the best results for the growth of tanjung seedlings, especially for the parameter of the number of leaves of the seedlings, and the sturdiness quotient of seedlings.Keywords: Growth, seedling, light intensity, Mimusops elengiABSTRAKntensitas cahaya matahari dan kecukupan unsur hara dalam tanah sangat memengaruhi pertumbuhan dan perkembangan suatu tanaman karena akan memengaruhi proses fotosintesis. Kebutuhan akan cahaya matahari sangat ditentukan oleh jenis tanaman itu sendiri. Semai tanjung (Mimusops elengi Linn.) merupakan salah satu jenis tanaman yang membutuhkan cahaya matahari pada fase awal pertumbuhannya. Tanaman ini juga memiliki kemampuan tinggi dalam beradaptasi terhadap lingkungan dan polusi udara, sehingga berpotensi untuk dikembangkan sebagai pohon pelindung pada program pengembangan hutan kota. Tujuan riset ini adalah untuk mengetahui bagaimana respon pertumbuhan semai tanjung terhadap persentase intensitas cahaya. Penelitian menggunakan rancangan acak kelompok (RAK) dengan persentase intensitas cahaya sebagai perlakuan. Perlakuan terdiri dari intensitas cahaya 100%, 55%, 30% dan 10%. Hasil penelitian menunjukkan persentase intensitas cahaya berpengaruh terhadap perkembangan dan pertumbuhan semai tanjung. Perlakuan dengan intensitas cahaya 100% dan 55% memberikan hasil terbaik untuk pertumbuhan semai tanjung, khususnya untuk parameter jumlah daun semai dan nilai kekokohan semai.Kata kunci: Pertumbuhan, semai, intensitas cahaya, Mimusops elengi
Komposisi, Keragaman dan Profil Tanaman Agroforestri di Taman Hutan Raya Wan Abdul Rachman (Composition, Diversity, and Profile of Agroforestry Plants in Wan Abdul Rachman Grand Forest Park) Murniati - Murniati; Minarningsih Minarningsih
Jurnal Penelitian Hutan Tanaman Vol 19, No 2 (2022): Jurnal Penelitian Hutan Tanaman
Publisher : Pusat Penelitian dan Pengembangan Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jpht.2022.19.2.91-110

Abstract

ABSTRACT At Wan Abdul Rachman Grand Forest Park (WAR GFP), an agroforestry system has been developed to repair the degraded conservation forest. In 2018 and 2019, the research was carried out at the WAR GFP and two surrounding villages, Bogorejo and Cilimus, which are located in Pesawaran District, Lampung Province. The research aimed to identify the soil fertility, as well as the species composition, diversity, and vegetation profiles of the agroforestry system. Interviews with respondents and key informants as well as field measurements were used in the research. Key informants consisted of the manager of WAR GFP, the heads village, and the head of farmer group alliances. Respondents were selected randomly from forest farmer groups in the two villages. In the agroforestry area, there were three clusters of plant species that were present: forest trees, multi-purpose tree species (MPTS,) and understorey plants. MPTS, which had a density of 1,077 trees/ha, was the dominant plant cluster. With an H’ value (Shannon Diversity Index) of 1.694S, the agroforestry system had a moderate level of species diversity. The average base area was 29.44 m2/ha, and there was a fairly high average tree cover. The level of soil fertility, including less fertile. At the research site, the agroforestry system’s plant characteristics were approximately similar to the characteristics of forest vegetation. As a result, it might be developed extensively on a large scale in forest areas, either in protected forests or conservation forests.Keywords: multi-strata, species diversity, basal area, profile, soil fertilityABSTRAK Sistem agroforestri telah dikembangkan di Taman Hutan Raya Wan Abdul Rachman (Tahura WAR) sebagai upaya merestorasi kawasan hutan tersebut. Budi daya tanaman semusim ditransformasi secara bertahap menjadi sistem agroforestri multi-strata. Penelitian dilaksanakan di Tahura WAR dan dua desa sekitarnya, yaitu Desa Bogorejo dan Desa Cilimus, Kabupaten Pesawaran, Provinsi Lampung pada tahun 2018 dan 2019. Penelitian bertujuan untuk mengidentifikasi komposisi jenis, keragaman dan profil vegetasi/tanaman di areal agroforestri, dan kesuburan tanah. Penelitian dilakukan melalui diskusi dan wawancara dengan informan kunci dan petani agroforestri, serta pengukuran lapang berupa analisis dan pemetaan vegetasi/tanaman. Informan kunci terdiri atas pengelola Tahura WAR, Kepala Desa dan Ketua Gabungan Kelompok Tani. Responden petani agroforestri sebanyak 59 orang dipilih secara acak dari beberapa kelompok tani hutan di dua desa lokasi penelitian. Terdapat tiga kelompok tanaman di petak agroforestri, yaitu jenis pohon hutan, jenis pohon serba guna (JPSG) dan tanaman bawah. JPSG atau Multi Purpose Tree Speises (MPTS) merupakan kelompok tanaman yang dominan dengan kerapatan 1.077 pohon/ha. Keragaman jenis tanaman pada sistem agroforestri termasuk sedang. Rata-rata basal area adalah 29,44 m2/ha dan rata-rata tutupan pohon termasuk sangat tinggi. Tingkat kesuburan tanahnya termasuk kurang subur. Karakteristik tanaman pada sistem agroforestri di lokasi penelitian mendekati atau hampir sama dengan karakteristik vegetasi hutan, sehingga dapat dikembangkan pada skala luas di kawasan hutan, baik hutan lindung maupun hutan konservasi.Kata kunci: Multi-strata, keragaman jenis, basal area, profil, kesuburan tanah

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