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SIMBIOSIS

simbiosis
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Published by Universitas Udayana

ISSN : 23377224 EISSN : 26567784 DOI : 10.24843/simbiosis

Core Subject : Agriculture,

Agriculture, Biological Sciences & Forestry

Arjuna Subject : -

Articles 6 Documents

Search results for , issue "Vol 7 No 1 (2019)" : 6 Documents clear

OBSERVATION OF TYPES OF GULMA IN CORN (Zea mays L.) PLANT PLANTS IN LAND SAWAH DESA BONGKASA ABIANSEMAL BADUNG, BALI PROVINCE Komang Krisna; Martin Joni; I. B.Gd. Darmayasa
SIMBIOSIS Vol 7 No 1 (2019)
Publisher : Jurusan Biologi Universitas Udayana

Research on weed inventory in maize land aims to see the diversity of existing weeds growing on the area of ??corn (Zea mays (L.)) in the fields of Bongkasa Abiansemal Badung Village, Bali Province. This observation will be expected to obtain information about the types of weeds that exist, so that weeds and control of weeds in corn (Zea mays (L.)) are optimally implemented. The study was conducted from June to August 2018. In observations using an exsplorating sampling method. In order to produce better and more systematic results, observations were made to make lanes and observations on the research land so that it could easily observe the growth of disturbing plants growing on the observed maize crops. In a 1-month old corn plant, 8 tribes were found with 16 species. In the 2month old corn plant, 14 tribes were found with 28 species of weeds, while in the 3-month-old maize there were 22 tribes with 40 species of weeds. The 22 tribes are Amaranthaceae, Asteraceae, Balsaminaceae, Capparidaceae, Commelinaceae, Convolvulaceae, Cyperaceae, Euphorbiaceae, Goodeniaceae, Laminaceae, Mimosaceae, Loganiaceae, Malvaceae, Onagraceae, Oxalidaceae, Poaceae, Portulacaceae, Rubiaceae, Scrophulariaceae, Solanaceae, Urtcaceae, Violaceae, Urtcaceae, with 40 species namely Amaranthus gracilis (Desf), Amaranthus spinosus (L), Ageratum conoyzoides L., Eclipta alba L., Emilia sonchifolia (L.), Vernonia cinerea (L, Synedrella nodiflora (L.), Tridax procumbens, Impatatiens platypetalaL Cleome rutidosperma DC, Cleome viscosaL, Murdania nudiflora (L.) Brenan, Impomea triloba L., Paedenia foetida L., Impomea gassicaulis Rot, Cyperus rotundus L. Kylliangia monocephala (Endl). Euphorbia hirta L. Phyllantus urinaria L., Phyllantus debilis Klein. Elephantopus scaber C., Basilicum polystachyon (L.), Mimosa pudica (L). Spigelia anthelmia L., Sida rhombifolia L., Ludwigia perennis L., Oxalis corniculata L. Dactyloctenium aegy ptium (L.), Digitaria ciliaris (Retz.), Eragrotis tenella (L.), Echinoclhoa colonum (L.), Elusine indica L., Portulaca oleraceae L., Hedyotis diffusa (L.) Lamk, Lindernia crustacea (L.), Scoparia dulcis L., Physalis angulata L., Capsicum frutescens, Urtica grandidentata L, Hybanthus attenuates L. Keywords: weed, Zea mays L., Bongkasa Village.

GROWTH OF SEVERAL SPECIES OF MANGROVE SEEDLINGS AS SEEDS READY FOR PLANTING IN, KARHUTLA CENTRE OF JAVA, BALI, AND NUSA TENGGARA I Ketut Endra Primantara; A.A.Ketut Darmadi; I Ketut Ginantra
SIMBIOSIS Vol 7 No 1 (2019)
Publisher : Jurusan Biologi Universitas Udayana

Mangrove forests have important role in coastal ecosystems, for example to overcome marine abrasion, bird nesting sites, forming ecological balance, capturing and localizing sediments, preventing soil acidity and inhibiting sea water intrusion. The success of mangrove reforestation is largely determined by the success in preparing mangrove seedlings. Nursery beds made of bamboo to accommodate 4 species of mangrove seedlings, that are Bruguiera gymnorrhiza, Rhizopora apiculata, Rhizopora mucronata and Rhizopora stylosa with 6 replications and each of 3 individuals of each type. The variables measured were plant height, number of leaves and stem diameter. Statistical analysis with the Costat & Co. program The results showed that the average growth of stem height from the 4 mangrove seedlings measured from 6 -13 MST was 1.5 cm, 1.4 cm, 0.8 cm and 0.7 cm respectively. The average number of leaves from the 4 mangrove seedlings were 0.6, 1.2, 0.6, and 0.6 strands respectively and the average stem diameter of the 4 mangrove seedlings was 0.1 cm. The mangrove seedlings of Rhizopora mucronata and Bruguiera gymnorrhiza species that produced higher growth rates of stem height than others, and Bruguiera gymnorrhiza which produced the highest average number of leaves compared to the other three types. Keywords ; seedlings, mangroves, growth

SPECIES OF CAPUNG (ORDER ODONATA) IN RICE PLANTS IN SEVERAL SAWAH SEKITAR DENPASAR, BALI Ni Made Suartini; Ni Wayan Sudatri
SIMBIOSIS Vol 7 No 1 (2019)
Publisher : Jurusan Biologi Universitas Udayana

Dragonfly is an insect which belongs to the Odonata order and consists of the suborder Anisoptera (dragonflies) and the suborder Zygoptera (damselflies). Its habitat is very wide including in the rice field. Dragonflies and damselflies are predatory insects, both in the form of nymphs and adults, so their role is very important in maintaining the balance of the ecosystem. The research was conducted to finding out the dragonfly species found in rice plantations in rice fields around the Denpasar area. Sampling was done by catching using insect nets on rice plantations, in the morning from 08.00 to 11.00 WITA, and in the afternoon from 15.00 to 17.00 WITA. Dragonfly samples obtained were then preserved to be identified by observing the morphological characters based on Hanum et al. (2013), and Sigit et al. (2013). Dragonfly species found in rice plantations areas in several rice fields around Denpasar are as many as 8 species which are included in 2 suborder, namely suborder Anisoptera (5 species) and suborder Zygoptera (3 species), Species of suborder Anisoptera (Potamarcha congener) only found in rice plantations in East Denpasar. Keywords: insects, dragonfly habitat, identification, morphological characters

GLOBAL WARMING AS ANTHROPOGENIC HUMAN ACTIVITY I Wayan Kasa
SIMBIOSIS Vol 7 No 1 (2019)
Publisher : Jurusan Biologi Universitas Udayana

Review has been conducted to investigate global warming as an effect of anthropogenic human activity on the planet. Methods employed in this study is relevant literature study exploration and then continued to analise by using SWOT analyses system (Humphrey, 1970). Result showed that, strengthening of this study is that our planet still play an important role as previous time in maintaining global ecosystem. Meanwhile, weaknesses would be increase dramatically global environmental temperature, followed by increase sea level rise as well as increase number of green house gasses as a whole. Subsequently, future opportunity is how to implement the Kyoto Protocol 1997, International conference of climate change of Nusa Dua Bali 2007 and recommending the result of the World Oceanographic Conference 2019. Therefore, big threathening remain is extremely well funded by all international country members of the International Panel of Climate Change (IPPC). Keywords: global warming, climate change, greenhouse gasses, SWOT analysis

Biokimia Darah Tikus (Rattus norvegicus) Betina Ovariektomi setelah Perlakuan Ekstrak Daun Kaliandra Merah (Calliandra calothyrsus Meissn.) Iriani Setyawati; Ngurah Intan Wiratmini; Ni Putu Ayu Dewi Wijayanti
SIMBIOSIS Vol 7 No 1 (2019)
Publisher : Jurusan Biologi Universitas Udayana

Red calliandra (Calliandra calothyrsus Meissn.) leaf have the potential as phytoestrogens. In this study, adult female ovariectomized rats (as a model of menopause women) were given calliandra leaf extract containing estrogenic flavonoids. This study was an experimental design with a Completely Randomized Design (CRD). Forty-five ovariectomized female rats were divided into five groups i.e. untreated control (K), and the treatment group given 80% of C. calothyrsus ethanolic leaves extract doses 25 mg/ kg bw (P1), 50 mg/ kg bw (P2), 75 mg/ kg bw (P3) and 100 mg/ kg bw (P4). The test suspension was given once a day at 24-hour intervals by gavage as much as 0.5 ml/rat/day for two months. At the end of the treatments, blood was collected for blood biochemical tests including hemoglobin levels, hematocrit values, blood glucose and proteins levels. The results showed that C. calothyrsus leaf extract did not negatively affect the health status of the animals through blood biochemical parameters, i.e. hemoglobin levels, hematocrit values, and glucose and protein levels of ovariectomized female rats.

FLORAL DIVERSITY IN MINCIDAN VILLAGE, KLUNGKUNG, BALI TO SUPPORT ECOTOURISM Made Ria Defiani; Eniek Kriswiyanti
SIMBIOSIS Vol 7 No 1 (2019)
Publisher : Jurusan Biologi Universitas Udayana

Flora diversity is one of natural resources for living of organism. The study aimed to explore type and usage of plants for medicinal at planned tracking area Mincidan Village to give benefit for education and ecotourism purposes. Method was descriptive analysis by surveying and giving some question to people around the village for plant conservation. Plants that were grown along the tracking site can be grouped as medicinal, ornamental, traditional uses on offerings. Based on the results, the plant can be identified 102 species, 71 genera in 38 families. The plants can be used for material on offering and traditional medicine.

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