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Journal : AGROTROP

PENGGUNAAN EKSTRAK BIOTA LAUTAGLAOPHENIA SP. UNTUK MENGENDALIKANFUSARIUM OXYSPORUM F.SP.VANILLAE PENYEBAB BUSUK BATANG VANILI SUADA, I KETUT
AGROTROP Vol. 1, No. 1 Mei 2011
Publisher : AGROTROP

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The Use of Aglaophenia sp. Marine Biota Extract to Control Fusarium oxysporum f. sp. vanillae, a Pathogen of Vanilla Stem Rot The use of marine biota for organic fungicide material has enormous potential to be developed. The organic fungicide was directed to substitute synthetic fungicide for vanilla cultivation. Application of synthetic fungicide degraded environmental quality, therefore its applications does not support sustainable agriculture. The objective of this research was to know the potence of Aglaopheniain suppressing the growth of F. oxysporum f. sp.vanillae, the pathogen of vanilla stem rot. The research was done in green house in order to find the best substance for formulation of the extract. The substances screened were water, tween-80, and detergents with two different concentrations. Subsequently, two best formulas were chosen to apply in endemic area in Tabanan. The green house and field trial research used Randomized Completely Design with three and five replications respectively. Results showed that tween was the best substance used for formulation and concentration of 0.2% was better than other concentrations. The extract diluted in tween-80 on the concentration of 0.2% showed the lowest rot on stem, longest shoot, and the most leaves on vanilla shoot. Because of its significant performance, the 0.1% extract ofAglaopheniain 0.1% tween-80 was proposed to be the best formula to suppress the vanilla stem rot disease.
Kultur In-vitro Anggur Laut (Caulerpa lentilifera) dan Identifikasi Jenis Mikroba yang Berasosiasi SUNITI, NI WAYAN; SUADA, I KETUT
Agrotrop: Journal on Agriculture Science Vol 2, No 1 (2012)
Publisher : Fakultas Pertanian Universitas Udayana

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This research aims to find the best condition for the cultivation of fragment of Caulerpa lentilifera, to determine the factors that influence its growth in-vitro, and to identify the types of microbes associated. The study was conducted at the Marine Tech Laboratory and Marine Biology Laboratory of Udayana University. The study begins with the in-vitro culture of C. lentilifera seaweed at the incubator and the tank. The observations of the morphology and the seaweed growth to determine the suitable conditions, the influens of growth factors and microscopic observation to determine the types of microbes were associated. The best results in in-vitro culture in incubator was achieved by provision of 2 ml of PES in 500 ml of sea water, 5000 lux of light intensity, 12 hours irradiation and 100% medium replacement once a week. Best results in-vitro culture in the using net method was achieved by provision of 3500 lux light intensity, 12 hours irradiation and 70% culture replacement once a week. The microbes associated with the C. lentilifera came from the protozoa phylum, flagellate, and cilliata classes.
Hubungan Antara Keragaman Gulma dengan Penyakit Bulai pada Jagung (Zea mays L.) Stadium Pertumbuhan Vegetatif SUDARMA, I MADE; SUADA, I KETUT; AYU YULIADHI, KETUT
Agrotrop: Journal on Agriculture Science Vol 2, No 1 (2012)
Publisher : Fakultas Pertanian Universitas Udayana

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Weeds play an important role in the spread of downy mildew disease, competition, and lower cropyields of corn. Research using the survey method in 3 locations of Sanur village, Denpasar City. Eachlocation is taken 5 samples, and each sample area was 1m2, which was arranged diagonally. Forweeds identification was using reference i.e. Weeds of rice in Indonesia, and identification of downymildew disease using reference i.e. Maize Disease: A Guide for Field Indentification and microscopically,while the weeds diversity was determined based on Diversity Index of Shannon-Wiener. Relationshipbetween number of weed species and weed populations, and disease incidence were determined byregression and correlation analysis. Weed diversity on ecosystem of maize in vegetative stage is verylow with the diversity index of 0.779, this means weed ecosystem unstable, and dominated by a particularweed species was Paspalum commersonii Lamk. (Fam. Poaceae/Graminaceae) of 23.3%, with thedominance index of 0.709. Relationship between the number of weed species and disease incidence ofthe downy mildew disease was highly significant (P<0,01), while the relationship between weed populationand disease incidence of the downy mildew disease is not significant. Plant height and leaf number ofmaize was influenced by the type of weed, but weed populations only affect plant height of maize invegetative stage (V3-V11).
Pengendalian Penyakit Akar Gada yang Disebabkan oleh Plasmodiophora brassicae Wor. pada Tanaman Kubis (Brassica oleracea L. var. capitata L.) dengan Beberapa Ekstrak Tanaman HENDRIYANI, NI MADE YUNITA; SUADA, I KETUT; SUNITI, NI WAYAN
Agrotrop: Journal on Agriculture Science Vol 2, No 2 (2012)
Publisher : Agrotrop: Journal on Agriculture Science

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Various pathogens are able to obstruct the growth of cabbage. One pathogen that attacks thecabbage is Plasmodiophora brassicae Wor. which causes clubroot disease. Some efforts have appliedto control the disease included using synthetic fungicides, however that was not success, moreover itspolluting the environment as well. It is necessary to develop natural fungicide from plants extract thatcontain fungicidal compounds. The purpose of this study was to determine the effectiveness of theplants extract to control the clubroot disease of cabbage. The research design used was completelyrandomized design (CRD) with eight treatments and four replications. Gamal extract was the mosteffective plant to control the clubroot disease and promoted the plant growth as well. Gamal extractresulted the lowest number of club root, the lowest percentage of pathogen attacks, the highest plantdry weight, the lowest root dry weight, the greatest plant height, and the most number of leaves.
Induksi Mutasi Tanaman Cabai Merah (Capsicum Annuum L.) dengan Ethyl Methanesulfonate pada Berbagai Tingkat Waktu Perendaman WIARTANA, I MADE AGUS; PHARMAWATI, MADE; SUADA, I KETUT
Agrotrop: Journal on Agriculture Science Vol 4, No 1 (2014)
Publisher : Fakultas Pertanian Universitas Udayana

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Induction of Mutation of Red Chili (Capsicum Annuum L.) Using Ethyl Methanesulfonate at Several Soaking Periods.One way to increase genetic variation is through induced mutation usingchemical mutagen. Ethyl methanesulfonate (EMS) is a chemical compound that can cause mutationsand commonly used in plant. In this study seeds of red chili were treated using EMS 1% through seedsoaking. Seeds of red chili were soaked with EMS 1% in phosphate buffer pH 7 for 6, 9, 12 and 15hours at room temperature. As control, seeds were soaked in phosphate buffer pH 7. This study aimsto evaluate, physiological and reproductive characters of plants after treated with EMS. Experimentwas conducted in an open field with 5 replicates for each treatment. Results showed that concentrationof chlorophyll a, b and total chlorophyll increased in plants derived from seed treated with EMS 1% for9 hours compared to control and other soaking periods. Soaking seeds with EMS 1% for 12 hoursincreased viability of pollen compared to control and other treatments. The first time of floweringoccurred earlier at 6 and 9 hours soaking period.
Pengaruh Varietas dan Waktu Penyiangan Gulma Terhadap Pertumbuhan dan Hasil Tanaman Kacang Hijau (Phaseolus Radiatus L.) GOMES, EUSEBIO; WIJANA, GEDE; SUADA, I KETUT
Agrotrop: Journal on Agriculture Science Vol 4, No 1 (2014)
Publisher : Fakultas Pertanian Universitas Udayana

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The Effects of Variety and Weeding Times on Growth and Yield of Mungbean (PhaseolusRadiatus L.)The mungbean have a great potential as a food ingredient mixture of refined productsand has certain competitive advantages over other types of beans. Mungbean production in East Timoris still low and has not been able to meet the needs of the market. Therefore, weed control and selectionof good varieties of mung beans is one of the determining factors in the increased production of mungbean.The objective of the study was to determine the effect of time of weeding on the growth and yield ofseveral varieties of mungbean. The study was conducted at the Pilot Suco Hera Sub-distrito Cristo Rei,Dili-Timor Leste. It used a randomized block design with two factors. The first factor was type ofvarieties of mungbean and the second factor was the weeding time. Factor of types of varieties consistedof three, namely: VL = Local Variety, VM = Merak variety, VG = Gelatik variety, while factor ofweeding times consists of PO = No weeding, P1 = weeding at 2 and 4 weeks after planting, P2 =weeding at 3 and 5 weeks after planting, with three replications. The results showed that weeding timeaffected the outcome of drying seed dry weight per hectare. Weeding time at 2 and 4 weeks afterplanting had a better dry weight of seed i.e 1.09 g, compared to those of weeding at 3 and 5 weeksafter planting. The use of different varieties showed that Merak variety had drying seed dry weight of1.16 tons ha-1, Gelatik variety was 1.09 tons ha-1, and the local variety was 0.97 tons ha-1.
Uji In-Vitro Daya Hambat Ekstrak Beberapa Jenis Tanaman terhadap Pertumbuhan Jamur Patogen Getah Kuning Buah Manggis SUADA, I KETUT; SUNITI, NI WAYAN; SUNARIASIH, NI PUTU LINDA
Agrotrop: Journal on Agriculture Science Vol 3, No 2 (2013)
Publisher : Agrotrop: Journal on Agriculture Science

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In-vitro Testing of Inhibiting Ability of Some Plants Extractto the Growth of MangosteenYellow Latex Pathogens. The yellow latex disease decreases fruit quality of mangosteen because ofthe exogenic latex causing dirty the fruit, and the endogenic latex makes the bitter fruit taste, thereforethe fruit does not deserve to be consumed. The causal agent of the disease are fungus i.e.Verticilliumalbo-atrum, Fusarium oxysporum,andPestalotia macrotricha, therefore the research was aimedto find the plant extract that could act as antifungal agent. Screening on many kinds of plant extractthrough well difusion method were found that crude water extract of 10% concentration of kayusugih, kayu tulak, sereh dapur, beluntas, puring, sirih hutan, temen, and dapdap were only effectiveto suppress Verticillium albo-atrum.Methanolic plant extract of 10% of endongplant was only effectiveagainst Fusarium oxysporum, while the extract that effective against Pestalotia macrotricha wasnot found yet.
Pengendalian Getah Kuning Manggis Menggunakan Ekstrak Rumput Laut dan Pemupukan Kalium SUADA, I KETUT; SUNITI, NI WAYAN
Agrotrop: Journal on Agriculture Science Vol 5, No 1 (2015)
Publisher : Fakultas Pertanian Universitas Udayana

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The Control of Mangosteen Yellow Latex Using Seaweed Extract and Potassium Fertilizer. The yellow latex disease decreases fruit quality of mangosteen because of exogenic latex causes dirty fruit and the endogenic latex makes the bitter fruit taste, then it does not deserve to be consumed. The causal agent of the disease was Verticillium alboatrum, Fusarium oxysporum, and Pestalotia macrotricha. Control using synthetic chemical for the fungus is severely decreasing the quality of the environment, therefore the use of organic agent such as botanical fungicide and the use of potassium fertilizer is recommended. The purpose of this research is to find the dose of potassium fertilizer and sea weed extract to decrease yellow latex disease of mangosteen fruit. The research was done in-vivo in the field with indicator of the decrease of yellow latex incident. The research showed that potassium fertilizer of 1.5 kg/plant combine with 1% extract was the best treatment with the lowest yellow latex incident of 9.4%. The treatment effective decreasing the disease of 56.3% compared to control and 56.9% when it is compared to 0,2% Antracol fungicide.
Uji Adaptasi Padi Sawah (Oryza sativa L.) Galur Harapan terhadap Hasil dan Ketahanan Penyakit Tungro di Subak Lepang, Desa Takmung, Kabupaten Klungkung SUGITA, PUTU; WIJANA, GEDE; SUADA, I KETUT
Agrotrop : Journal on Agriculture Science Vol 8 No 1 (2018)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/AJoAS.2018.v08.i01.p10

Abstract

Adaptation Test of Paddy Rice (Oryza sativa L.) Expected Line Against Results and Disease Resilience Tungro Disease in Subak Lepang, Takmung Village, Klungkung Regency. Adaptation test of expected line paddy (Oryza sativa L) on its yield and tungro-resistance in Subak Lepang were conducted from July to September 2016. The aims of this test were to examine the growth and productivity of expected line paddy and its resistance to tungro. Twelve lines and two comparated varieties were set using Randomized Block Design. Dependent variable were growth, yield and age of 50% productive spikelets were gain, duration of yield, number of panicles, length of panicle, number of filled spikelets in each panicle, number of empty spikelets in each panicle, total spikelets, sweed set, weight of 1000 spikelets, weight of 14% water content of 1000 spikelets, weight of dry spikelets in a hectare (ton) and precentage of tungro’s invation. Statistical analisis showed that BP16732E-1 as expected line was well adapted to test, which were give better growth, yield and tungro resistency, and 13.139% higher yield compared to Ciherang variety. Future research on adaptation in different season and ecosystem should be conducted to determine this strain as new supreme strain.
Uji Efektifitas Endomikoriza Indigenus terhadap Pertumbuhan Tanaman Jagung (Zea mays L.) LELE, ONESIMUS KE; RAI, I NYOMAN; SUADA, I KETUT
Agrotrop : Journal on Agriculture Science Vol 8 No 1 (2018)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/AJoAS.2018.v08.i01.p03

Abstract

The Effectiveness Test of Indigenous Endomycorrhiza on Maize Plant Growth (Zea mays L.). Efforts to increase crop productivity were hampered due to various obstacles such as genetic, environmental, and biotic factors, in order that alternative technologies such as endomycorrhizal biological agents were required. This study was aimed to determine the effectiveness of indigenous endomycorrhiza for the growth of maize. The experiments were carried out in the laboratory and greenhouse. The field experiment was designed in a nested randomized block design. The first factor was genus of indigenous endomycorrhiza (M) consisting of 3 lavels i.e genus Glomus (G), genus Gigaspora (F) and the mixed genus (C), the second factor was the spore dose (D) consisting of 3 levels i.e. D1 = dose of 50 spores, D2 = 100 spores and D3 = 150 spores. The genus Glomus was able to increase the weight of fresh and dry oven total stalk, the number of leaves and the height of the plants and those significantly higher than that of the genus of Gigaspora and the mixed genus. Spore doses (50, 100 and 150 spores) of the genus Glomus and the genus Gigaspora and mixture gave no significant different results on all observed variables.
Co-Authors Adiartayasa, I Wayan AGUSTINA BORU MANIK Ahmat Fansidar Aletha Yuliana Mandala, Aletha Yuliana ANAK AGUNG NGURAH GEDE SUWASTIKA, ANAK AGUNG NGURAH GEDE Anastasia Cornelia Anggara Fajri Prasafitra ANITA KAROLINA SIMAMORA Arhiono, Haru Nira Putra Chandra Immanuel Saragih Christine Regina Fenita Wenno, Christine Regina Fenita Cita, I Putu Giri Wahyu Eka Dayana, Anak Agung Putri Isadela DELVIANA PANJAITAN Dwi Yoga Sutrisna Dyah Ayu Widiasih ELIYA KUSUMAWATI Elly Hariati Br Purba, Elly Hariati Br Emerensia Patryconsitha Aman EUSEBIO GOMES GEDE WIJANA Gracemon Loe Mau, Gracemon Hapsari Mahatmi HESTI YOHANA GINTING I Gede Indrawan I GEDE KETUT SUSRAMA I Gede Putu Wirawan I GEDE SUSRAMA I Gusti Ketut Suarjana I MADE AGUS WIARTANA I MADE SUDARMA I Made Sukada I NYOMAN RAI I Putu Sampurna I Wayan Batan I WAYAN EKA ADI WIRAWAN, I WAYAN EKA ADI I Wayan Suardana I WAYAN WIRAATMAJA I.B.N. Swacita, I.B.N. Ida Bagus Komang Ardana Ida Bagus Ngurah Ngurah Swacita, Ida Bagus Ngurah Ida Bagus Ngurah Swacita IRMA SELVYANA Br. SITEPU Julitha Dewitri Merthayasa, Julitha Dewitri Kadek Karang Agustina KARTINI HUTASOIT KETUT AYU YULIADHI Ketut Budiasa LELE, ONESIMUS KE Lely Anggriani Nababan LULUK WULANDARI MADE PHARMAWATI Made Sritamin Mardyawati, Ida Ayu Putu Aselya Maria Yasinta Manuama Mas Djoko Djoko MAS DJOKO RUDYANTO Maulina Nababan, Maulina Ni Made Puspawati NI MADE YUNITA HENDRIYANI NI PUTU LINDA SUNARIASIH NI WAYAN SUNITI NOER SYAIFUL HAKIM Nurul Masyita, Nurul Pande Made Satya Sumitra Paramita, Ni Made Diana Pradnya Praborini, M. PRADNYANA, I KADEK NGESTIKA Prima, Evy Purnama Layli, Purnama PUTU AYU MEITA YUDIA DEWI, PUTU AYU MEITA YUDIA Reny Navtalia Sinlae REZKI ABADI BONTONG Richard Stenly Tindjabate SANGGUL HUTASOIT Sembiring, Sonia Dewi Citra SHEILA SIMANJUNTAK SISKA MAHARGIAN FIBRIANTI SUGITA, PUTU SURAINIWATI SURAINIWATI Uli Rehlitna Sembiring, Uli Rehlitna Wilson Lois, Wilson Wisnu Pradana Yunita Sri Hastuti, Yunita Sri