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Journal : Techno: Jurnal Penelitian

Hama pada Cabai Merah Didi Budi Cahyono; Hasna Ahmad; A. R. Tolangara
TECHNO: JURNAL PENELITIAN Vol 6, No 02 (2017): Techno Jurnal Penelitian
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/tk.v6i02.565

Abstract

AbstrakHama merupakan hewan yang merusak tanaman dan umumnya merugikan para petani dari segi ekonomi, maka manusia selalu akan memperhatikannya, guna meningkatkan hasil pertanian, jika tidak hasil panennya akan menurun. Adapun tujuan penelitian inim untuk mengetahui keanekaragaman jenis hama yang menyerang tanaman cabai merah. Metode penelitian ini bersifat deskriptif kualitatif, dengan menggunakan perhitungan indeks keanekaragaman jenis. Hasil penelitian menunjukkan bahwa Jenis hama yang ditemukan pada tanaman cabe merah terdiri dari jenis  Locusta migratoria manilensis, Gryllus mitratus, Grylloptalpa africana, Lycosa sp, Spodoptera litura L., Mycus percicae, Planococus citri, Aulocophora sp,  Epilachna argus. Populasi hama tertinggi adalah ulat grayak (Spodoptera litura L.) dan jenis yang memiliki populasi terendah yaitu orong-orong (Grylloptalpa africana). Keankaregaman jenis hama pada tanaman cabe merah memiliki nilai keragaman sebesar H’ = 1,825, maka dikategorikan keanekaragaman jenis sedang.Kata kunci: Jenis hama, Tanaman Cabe, Keanekaragaman jenis AbstractPest is a destructive animal for plants and is generally harming the farmers in terms of economic aspect. Thus, people always put their attention to it in order to increase the produce otherwise the harvest will be decreased. The research aimed to find out the diversity of pest type attacking chili pepper crop. The research method was qualitative descriptive using the calculation of diversity index. The research result indicates that the types of pest found in chili pepper crop were: Locusta migratoria manilensis, Gryllus mitratus, Grylloptalpa africana, Lycosa sp, Spodoptera litura L., Mycus percicae, Planococus citri, Aulocophora sp, and Epilachna argus. The highest population was taro caterpillar (Spodoptera litura L.) and the lowest was mole cricket (Grylloptalpa Africana). The diversity of pest in chili pepper has diversity value of H’ = 1.825 and it categorized as medium diversity.Keywords: Type of pest, Chili pepper, Type diversity
Dekomposisi Serasah Avecennia lanata pada Berbagai Tingkat Kedalaman Tanah Ningsi Saibi; A.R. Tolangara
TECHNO: JURNAL PENELITIAN Vol 6, No 01 (2017): Techno Jurnal Penelitian
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/tk.v6i01.556

Abstract

AbstrakSerasah mangrove berperan penting dalam kesuburan perairan pesisir. Serasah mangrove yang terdekomposisi akan menghasilkan unsur hara yang diserap oleh tanaman dan digunakan oleh jasad renik di lantai hutan dan sebagian lagi akan terlarut dan terbawa air surut ke perairan sekitarnya. Penelitian dilakukan dengan cara menghitung penyusutan bobot serasah awal yang terdekomposisi kemudian membandingkan bobot serasah yang terdekomposisi tiap bulan. Penelitian bertujuan untuk mengetahui pengaruh tingkat kedalaman tanah yang dapat mempercepat proses dekomposisi serasah. Hasil penelitian menunjukkan bahwa kedalaman tanah berpengaruh terhadap laju dekomposisi serasah jenis Avecennia lanata,  tiap kedalaman tanah memiliki jenis dan jumlah mikroorganisme yang berbeda-beda, kondisi ini akan dapat berpengaruh terhadp laju dekomposisi serasah dan tingkat kedalaman 10 cm yang paling berpengaruh terhadap laju dekomposisi serasah Avecennia lanata yaitu yaitu sebesar 0,29-0,39 gram/hari. Kata kunci: dekomposisi serasah, Avecennia lanata, Tingkat kedalaman tanah AbstractMangrove litters play important role in coastal water fertility. The decomposed mangrove litters will produce nutrient absorbed by plants and some of them will be used by microorganisms in wood floor and the other will be dissolved and carried by the low tide to the surrounding waters. The research was conducted by calculating the depreciation of the initial weight of the decomposed litters and comparing it to the decomposed litter weight every month. The research aimed to find out the influence of soil depth that could accelerate litters decomposition process. The research result indicated that soil depth influenced the decomposition rate of Avecennia lanata litters. Each soil depth had different type and number of microorganisms. The condition would influence the decomposition rate of the litters. Soil depth of 10 cm was the most influential on the decomposition rate of Avecennia lanata litters, which was 0.29-0.39 gram/day. Keywords: litters decomposition, Avecennia lanata, Soil depth
Kerapatan Mangrove dan Konservasinya di Bacan Kabupaten Halmahera Selatan Provinsi Maluku Utara Abdulrasyid Tolangara; Hasna Ahmad
TECHNO: JURNAL PENELITIAN Vol 6, No 02 (2017): Techno Jurnal Penelitian
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/tk.v6i02.566

Abstract

AbstrakHutan mangrove merupakan perpaduan antara dua habitat yaitu terrestrial dan aquatik. Dalam perkembangannya ekosistem ini selalu mengalami kerusakan, ini terjadi kerena belum ada perhatian pemerintah untuk mencegahnya. Metode penelitian ini adalah deskriptif kuantitatif, dengan  menggunakan model Point Centered Quarter dan pengambilan sampel dengan menggunakan garis transek serta plot hitung berukuran 10mx10m untuk pengamatan tingkat pohon. Mangrove yang diukur pada 2 kawasan yaitu kawasan mangrove alami (A) yang teridiri empat stasiun dan kawasan mangrove rehabilitasi (B) juga terdapat empat stasiun. Pohon yang dipilih adalah pohon yang paling dekat di setiap quarter. Data pengamatan kemudian dianalisis secara kuantitatif  berupa kerapatan jenis mangrove di setiap stasiun. Hasil penelitian menunjukkan bahwa kerapatan jenis mangrove  kawasan alami berada pada kategori jarang misalnya stasiun I pada jenis A. alba 512 individu/m2, stasiun II terdapat pada jenis S. alba  456 individu/m2 dan stasiun III pada jenis R. apiculata 326 individu/m2. Sedangkan pada kawasan rehabilitasi berada pada kategori padat hingga sedang, misalnya pada stasiun IV kategori padat yaitu jenis B. gymnorrhiza 3.400 individu/m2, stasiun I kategori padat jenis R. apiculata 2.100 individu/m2, dan stasiun II kategori padat  terdapat pada jenis jenis R. stylosa dan stasiun III kategori sedang terdapat pada jenis R. mucronata 1.324 individu/m2. Ini terjadi akibat aktifitas masyarakat yang selalu memanfaatkan potensi hutan tersebut, tanpa upaya konservasi, maka diperlukan upaya konservasi dengan model pengelolaan yang berbasis masyarakat (Community Based Management).Kata Kunci: Mangrove, Kerapatan, Konservasi, Bacan. AbstractMangrove forest is a combination of two habitats, terrestrial and aquatic. In its development, the ecosystem experiences damage due to the less attention from the government to prevent it. Therefore, information is needed to find out about the comparison of density between natural and rehabilitation areas. The research method used was quantitative descriptive using Point Centered Quarter model and sampling used was transect line with calculation plot in size of 10mx10m for observation of tree stage. Mangrove was measured in two areas, natural mangrove (A) and rehabilitation mangrove (B) both consisted of four stations. Trees chosen were the closest trees in each quarter. Observation data was analyzed quantitatively in form of the density of mangrove type in each station. The research result indicates that the density of mangrove type in natural area was in sparse category, such as in Station I for type of A. Alba the density was 512 individual/m2, Station II with type of S. alba was 456 individual/m2 and Station III in type of R. apiculata was 326 individual/m2. In rehabilitation area, on the other hand, was in dense to moderate category, such as the dense category in Station IV was for type of B. gymnorrhiza of 3,400 individual/m2, Station I was for type of R. apiculata of 2,100 individual/m2, and Station II was for R. stylosa. Whereas, for moderate category in Station III was in R. mucronata of 1,324 individual/m2. It was due to the activity of the community that utilized the forest potential without conservation effort. Therefore, a conservation effort is needed through community based management model.Keywords: Mangrove, Density, Conservation, Bacan
Jenis Tumbuhan Bertahan Hidup di Lahan Kering Riri Yulianti Rusdi; A. R. Tolangara; Hasna Ahmad
TECHNO: JURNAL PENELITIAN Vol 6, No 02 (2017): Techno Jurnal Penelitian
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/tk.v6i02.564

Abstract

AbstrakAir merupakan bagian terbesar penyusun jaringan tumbuh-tumbuhan. Air berfungsi  mengatur setiap proses metabolisme tanaman secara langsung atau tidak langsung. Air yang tersedia di dalam tanah berada pada kapasitas lapang. Air pada kapasitas lapang adalah air yang tetap tersimpan dalam tanah. Air dapat hilang dalam bentuk uap air dari jaringan hidup tanaman yang terletak di atas permukaan tanah, air tersebut daapt hilang melewati stomata, kutikula, dan lentisel disebut transpirasi. Air pun dapat hilang akibatnya tanah menjadi kering. Apabila tanaman hidup dalam kondisi ini,  maka tanaman akan mengalami cekaman air (Water stress) dan akhirnya mati. Penelitian ini bertujuan untuk mengetahui jenis tumbuhan yang mampu bertahan hidup di lahan kering beserta lamanya waktu tanaman dalam bertahan hidup.  Penelitian ini bersifat eksperimen yang menggunakan Rancangan Acak Lengkap (RAL) , dengan 4 perlakuan dan 5 kali ulangan. Pemberian air sekali dalam 9 bulan dan pengamatan dilakukan seminggu sekali dengan parameter tinggi tanaman dan jumlah daun. Sedangkan untuk faktor lingkungan berupa pH, suhu dan kelembaban tanah diukur pada awal penelitian dan akhir penelitian. Kemudian data tersebut dianalisis menggunakan uji Koefisien Variasi (KV). Hasil penelitian menunjukkan bahwa jenis tanaman yang mampu bertahan hidup di lahan kering adalah jagung dengan waktu 20 minggu (5 bulan).Kata Kunci : Jenis Tumbuhan, bertahan hidup, lahan kering Abstract Water is the biggest constituent of plant tissues. Water serves to regulate all plant metabolism processes, directly or indirectly. Water available in the soil is in field capacity, which is water that is kept in the soil. The water can be lost in form of vapor from plant living tissues located on the soil surface. The water can be lost through stomata, cuticle and lenticel and it is called transpiration. The loss of water causes soil to dry. If plant lives in this condition, the plant will experience water stress and eventually it will die. The research aimed to find out the type of plant that able to survive on dry land and the duration of the survival. The research was an experimental research using a completely randomized design (RAL) with four treatments and 5 repetitions. Watering was conducted once in 9 months and observation was conducted once in a week with parameters of plant height and number of leaves. Regarding the environmental factors, namely, pH, temperature and, soil humidity, they were measured in the beginning and end of the research. Data was analyzed using variance coefficient (KV) test. The research result indicated that type of plant that survived on dry land was corn with 20 weeks (5 months) of period.  Keywords: Type of plant, survival, dry land
First Report of Genus Plumeria L. (1753) in Ternate Island as The Flora Ternate Database Suparman Suparman; Abdulrasyid Tolangara; Hasnah Ahmad; Wa Ode Risnawaty; Magfirah Rasyid
TECHNO: JURNAL PENELITIAN Vol 12, No 2 (2023): TECHNO JURNAL PENELITIAN
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/tjp.v12i2.6594

Abstract

The genus Plumeria Tourn ex. Linn., family Apocynaceae Juss officially has 20 accepted species from around the world. The genus is native from Mexico to Caribbean; however, it was introduced to some part of world especially to tropical area. In this paper, we formally reported for the first time the data for the genus Plumeria in Ternate, North Maluku, Indonesia. The exploration research was conducted from March to June 2022 for around Ternate Island. All species of Plumeria spp are noted and collected from 21 villages as representative of five subdistricts in Ternate Island. Three accepted species namely Plumeria obtusa L., P. pudica Jacq., dan P. rubra L are validated in Ternate. All species are discovered as ornamental plant and cemetery marker. P. obtusa is the most common species found in many villages followed by P. rubra. This publication shares information about location, general utility, and key identification for every species