310 research outputs found

    PERTUMBUHAN TANAMAN DAN STRUKTUR ANATOMI DAUN KEDELAI, KACANG PANJANG, DAN KACANG TANAH PADA KETINGGIAN TEMPAT YANG BERBEDA

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    Soybeans, yardlong beans and peanuts are cultivated crops widely grown in the tropics at different altitudes. Differences in environmental factors between lowlands and highlands will affect plant growth and leaf anatomical structure. The study aimed to determine the growth and anatomical structure of the leaves of soybean, yardlong bean and peanut plants at different altitudes. The test plants were grown at two different altitudes. At an altitude of ± 20 masl, the test plants were placed in the greenhouse of the Biology Department of the Faculty of Mathematics and Natural Sciences, Tadulako University and at an altitude of ± 630 masl, the test plants were placed in Bahagia Village, Palolo District, Sigi Regency. The results showed that yardlong bean and peanut plants grown at an altitude of ± 630 masl had a lower stomatal density than those grown at  ± 20 masl so the plant dry weight produced was also lower. Soybean plants have a larger stem diameter and plant dry weight at an altitude of ± 630 masl, these are due to the higher stomatal density and leaf thickness compared to those grown at an altitude of ± 20 masl

    OBSERVASI PERTUMBUHAN SERTA PEMBENTUKAN TUBUH BUAH JAMUR TIRAM PUTIH (Pleurotus ostreatus) PADA MEDIA SERBUK GERGAJI DAN LIMBAH DAUN KAKAO

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    he title of this research is The observation of the growth and formation of white oyster mushroom fruit body (Pleurotus ostreatus) on sawsdust and cocoa leaf waste media litter which has been carried out in the Microbiology Laboratory, Department of  Biology, Faculty of Mathematics and Natural Sciences. The aim of this research is to determine mycelium growth and formation. Fruting bodies of white oyster mushrooms (Pleurotus ostreatus) on a basic medium of sawdust substituted with leaf litter cocoa. This research was designed in a Completely Randomized Design (CRD) consisting of seven treatments and three replications. The treatment media consisted of sawsdust and and cocoa leaf waste (CLW), namely P1 (sawsdust 500g without CLW), P2 (sawsdust 475g + CLW 25g), P3 (sawsdust 450g + CLW 50g), P4 (sawsdust 425g + CLW 75g), P5 (sawsdust 400g + CLW 100g), P6 (sawsdust 375g + CLW 125g), P7 (sawsdust 350g + CLW 150g) 45g rice bran + 5g lime + 500 ml water were added to each treatment. The best growth in observing the mycelium incubation period until it filled the baglog was in treatment (P2) with a time of 43 days, the best growth in the incubation period until pinheads appeared was in treatment (P1) with a time of 53 days, the best treatment for the number or fruit bodies is in treatment (P5) with a value of 8,67, the best treatment for fresh body weight fruit, namely treatment (P5) with a value of 60,67g. The best treatment for fruit body dry weight was treatment (P5) with a value of 11,33g. The media composition corresponds to the best treatment of the seven treatments, namely P5 (400g sawdust + 100g cocoa leaf litter). Because it has the fastest fruit body incubation. The highest number of fruit bodies and the heaviest fresh weight and dry weight

    FORMULASI MEDIA PRODUKSI TUBUH BUAH JAMUR TIRAM PUTIH (Pleurotus ostreatus (Jacq.) P. Kumm), BERBAHAN DASAR LIMBAH TANDAN KOSONG KELAPA SAWIT DAN SERBUK GERGAJI

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    This research aims to determine the growth and production as well as the optimal dosage for white oyster mushroom fruiting bodies on a basic substrate of oil palm empty fruit bunch and sawdust. The study was designed using a completely randomized design (CRD) with seven treatments and three replications. The treatment media consisted of oil palm empty fruit bunch (LSTKKS), sawdust (SG), rice bran (DP), and CaCO3 lime. The treatments were as follows: P1 (LSTKKS 1000 g + Lime 20 g), P2 (LSTKKS 800 g + SG 200 g + DP 100 g + Lime 20 g), P3 (LSTKKS 600 g + SG 400 g + DP 100 g + Lime 20 g), P4 (LSTKKS 500 g + SG 500 g + DP 100 g + Lime 20 g), P5 (LSTKKS 400 g + SG 600 g + DP 100 g + Lime 20 g), P6 (LSTKKS 200 g + SG 800 g + DP 100 g + Lime 20 g), P7 (SG 1000 g + DP 100 g + Lime 20 g). The parameters used in the study included mycelium growth on the substrate, incubation period until pinhead formation, number of pinheads, incubation period until fruiting body formation, number of fruiting bodies, fruiting body morphology, fresh weight of fruiting bodies, and dry weight of fruiting bodies. The results showed that mushrooms could grow on all treatment media, but the best growth and production occurred in treatments P4 with a dosage of 500 g oil palm empty fruit bunch + 500 g sawdust + 100 g rice bran + 20 g lime and treatment P5 with a dosage of 400 g oil palm empty fruit bunch + 600 g sawdust + 100 g rice bran + 20 g lim

    AN IDENTIFICATION KEY FOR THE FRESHWATER SHRIMPS OF KEPULAUAN BANGGAI, SULAWESI TENGAH

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    This study developed a key for identifying freshwater shrimp species collected from the Banggai Islands, Central Sulawesi, Indonesia. Such keys are essential tools for biodiversity studies and species identification, benefiting researchers, students, and institutions. Conducted between October 2023 and April 2024 at the Laboratory of Animal Biosystematics and Evolution (BSHE), the research utilized existing specimens from the Banggai Islands previously deposited and stored within the BSHE collection. Methodology comprised specimen sorting, sexing, photographic documentation, taxonomic identification, and subsequent construction of the dichotomous key. The resulting key encompasses two species within the family Atyidae (Caridina brevicarpalis and C. typus) and four species within the family Palaemonidae (Macrobrachium australe, M. equidens, M. lar, and M. latidactylus)

    JENIS-JENIS TUMBUHAN PAKU (PTERIDOPHYTA) TERESTRIAL DI KAWASAN TAMAN WISATA ALAM BANCEA

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    Penelitian ini bertujuan untuk mengidentifikasi jenis tumbuhan paku terestrial yang hidup di Kawasan taman wisata alam Bancea. Penelitian ini menggunakan Jenis penelitian deskriptif kualitatif dengan metode jelajah dan teknik pengambilan sampel secara koleksi bebas. Penelitian ini dilakukan di Kawasan taman wisata alam Bancea pada bulan Desember 2023. Hasil penelitian menunjukan bahwa tumbuhan paku terrestrial yang ditemukan sebanyak 40 jenis yaitu Dicranopteris linearis, Asplenium nidus, Stenochlaena palustris, Nephrolepis radicans, Taenitis blechnoides, Cyathea gigantean, Hymenophyllum tunbrigense, Christella dentata, Didymochlaena lunuata, Davalia denculata, Pityrogramma calomelanos, Adiantum lunulatum, Pteris multifida, Diplazium esculantum, Lygodium Flexuosum, Drynaria sparsisora, Nephrolepis exaltata, Cyathea contaminans, Archniodes aristata, Microsorum scolopendria, Schizaea dichotoma, Rumohra adiantifarmis, Cyrtomium falcatum, Lepisorus bicolor, Nephrolepis Hirsutula, Drynaria quercifolia, Dipteris conjugate, Lygodium circinatum, Polypodium trilobum, Aspelium normale, Vittaria elongata, Polypodium aureum, Diplazium proliferum, Tectaria heracleifolia, Drynaria coronans, Sadleria cyatheoides, Pteris cretica, Selaginella intermedia, Lycopodium cernuum dan Equisetum hyemale.dari 40 jenis tersebut terbagi kedalam 3 kelas dan 18 suku yang terdiri dari Gleicheniaceae 1 jenis, Aspleniaceae 2 jenis, Blechnaceae 2 jenis, Nephrolepidaceae 3 jenis, Pteridaceae 6 jenis, Cyatheaceae 2 jenis, Hymenophyllaceae 1 jenis, Thelypteridaceae 1 jenis, Dryopteridaceae 5 jenis, Davaliacea 1 jenis, Polypodiaceae 8 jenis, Schizaeaceae 2 jenis, Eqisetaceae 1 jenis, Dipteridaceae 1 jenis, Lygodiaceae 1 jenis, Selaginellaceaen 1 jenis, Athyriaceae 1 jenis dan Lycopodiaceae 1 jenis

    KEANEKARAGAMAN LICHEN DI TAMAN WISATA ALAM BANCEA

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    Lichen merupakan salah satu jenis tumbuhan tingkat rendah dari hasil simbiosis dari alga dan jamur. Tujuan penelitian ini adalah untuk menentukan tingkat keanekaragaman lichen di Taman Wisata Alam Bancea. Jenis penelitian ini adalah deskriptif kuantitatif dengan teknik pengambilan sampel menggunakan metode plot di tiga stasiun yang ditentukan secara purposive sampling berdasarkan ketinggian yang berbeda. Hasil penelitian menunjukkan bahwa lichen yang ditemukan sebanyak 22 jenis lichen yaitu Phlyctis argena, Hypogymnia physodes, Phlyctis agelaea, Phaeophyscia orbicularis, Pannaria tavaresii, Punctelia borreri, Collema tenax, Cladonia caespiticia, Parmelia sulcata, Parmotrema perlatum, Heterodermia albicans, Thelotrema subtile, Cryptothecia scripta, Pyrenula concatervans, Lepraria umbricola, Herpothallun sanguineum, Trypethelium virens, Punctelia rudecta, Chrysothrix candelaris, Cryptothecia striata, Leptogium subtile, dan Pannaria rubiginosa. Hasil analisis indeks keanekaragaman Shannon-Wiener menunjukkan kategori sedang dengan nilai H’= 2.811

    INVASI UDANG AIR TAWAR Macrobrachium lanchesteri DI DANAU BOLANO TOGA, TOLI-TOLI, SULAWESI TENGAH

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    Sulawesi Island has long been known as one of the regions in Indonesia that holds a wealth of freshwater shrimp species in both lentic and lotic waters. One of the lentic waters in Sulawesi is Lake Bolano Tago which is located in Toli-Toli Regency, Central Sulawesi. This research aims to reveal the population and abundance of freshwater shrimp in the lake. Sampling was carried out in April 2022 along the lake's littoral zone which was divided into 7 stations using purposive sampling and sweep methods. Sampling effort at each station was carried out for 4 hours. Environmental physicochemical factors measured include water temperature, brightness, dissolved oxygen levels, and water acidity levels. Specimen identification was carried out at the Animal Biosystematics and Evolution Laboratory, Biology Department, FMIPA, Tadulako University. Identification was carried out based on morphological characters by following the identification key of Wowor et al (2004). The results of this research revealed that of the freshwater shrimp collected as many as 1,165 individuals in the lake, all consisted of one species, namely Macrobrachium lanchesteri. This species belonging to the Palaemonidae family is not native to Indonesia but comes from the Oriental region. Macrobrachium lanchesteri was first described based on a type specimen originating from Thailand. Its presence in Lake Bolano Toga is quite worrying because of its invasive nature. With the abundant presence of the M. lanchesteri species at all stations, it can be confirmed that the Macrobrachium lanchesteri species has invaded Lake Bolano Tog

    ETNOBOTANI TUMBUHAN SEBAGAI BAHAN BANGUNAN RUMAH ADAT SUKU LAETUA, MANLETEN, DAN MANESUNULU DI DESA FATUARUIN KABUPATEN MALAKA NUSA TENGGARA TIMUR

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    Etnobotani rumah adat pada Suku Laetua, Manleten, dan Manesenulu merupakan bentuk kearifan lokal yang perlu didokumentasikan. Penelitian ini bertujuan untuk mengetahui jenis tumbuhan dan struktur  rumah adat  Suku Laetua, Manleten, dan Manesenulu. Metode penelitian yang digunakan berupa observasi, wawancara, dokumentasi, dan identifikasi. Hasil penelitian menunjukkan bahwa masyarakat Suku Laetua memanfaatkan gewang, pinang, rotan, asam, jati, dan cemara; Suku Manleten menggunakan gewang, pinang, kelapa, rotan, lontar, asam dan jati; serta Suku Manesunulu memakai gewang, rotan, pinang, asam, cemara, jati, dan mahoni sebagai bahan pembuatan rumah adat. Organ tumbuhan yang digunakan berupa batang dan daun yang dimanfaatkan sebagai lantai, tiang utama, tiang sudut, dinding, lantai, dan pengikat. Rumah adat ketiga suku berbentuk persegi dengan atap berbentuk limas

    MACRO CONTENT ANALYSIS BETWEEN ECO ENZYME AND GREEN TONIC FERTILIZER ON CHILI PLANT GROWTH

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    Organic waste is a serious problem in big cities. Eco Enzyme and Green Tonic fertilizer are used to solve the problem and increase the growth of chili plants. Research comparing the macro content of both is needed. Eco Enzyme analysis activities were carried out at the Soil Laboratory, Faculty of Agriculture, Mulawarman University. The activity of planting chili plants was carried out in one of the researcher's houses. The activities carried out in this study were carried out in two stages, namely the first stage of analysing the content of Eco Enzyme and Green Tonic Fertilizer and the second stage of planting chili plants. Green Tonic Fertilizer has a higher Nitrogen content than Eco Enzyme. However, Eco Enzyme has a higher Potassium content than Green Tonic Fertilizer. Based on the results of the research activities that have been carried out, it can be concluded that; observation of the height of chili plants after the experiment shows that the interaction effect and the main effect of applying eco enzyme has a significant effect on the height of chili plants compared to applying Green Tonic fertilizer and the results also show that many leaves using eco enzyme are better than Green Tonic fertilizer

    UJI KADAR ABU PAKAN TERNAK DAERAH KABUPATEN SIJUNJUNG DENGAN METODE GRAVIMETRI

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    Feed is anything that can be given as a source of energy and nutrients. The organic matter content of a feed depends on other components such as dry matter and ash. Gravimetry is a quantitative analysis used to determine the total ash content. This experiment used a completely randomized design.  Based on the observation table which presents many samples in Sijunjung, feed samples processed from various different brands meet good nutritional standards for animal nutrition according to SNI standards

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