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All Journal Buletin Udayana Mengabdi E-Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology)
I DEWA PUTU SINGARSA
Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana
Agriculture, Biological Sciences & Forestry Education

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Pengaruh Jenis Formula Media Pembawa dan Bakteri PGPR (Plant Growth Promoting Rhizobacteria) Dalam Memacu Pertumbuhan dan Menekan Penyakit Blas (Blast) pada Tanaman Padi Beras Merah Lokal Jatiluwih TRIWANTO NABABAN; I MADE SUDANA; I DEWA PUTU SINGARSA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.9, No.4, Oktober 2020
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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The Effect of PGPR (Plant Growth Promoting Rhizobacteria) Bacteria Carier Media Formulas in Growth Stimulate and Suppressing The Presece of Blast Diseases in Jatiluwih Local Brown Rice Plants. This study aims to determine the effect of PGPR (Plant Growth Promoting Rhizobacteria) bacteria carier media Formulas in growth stimulate and suppressing the presece of blast diseases in jatiluwih local brown rice plants. Formulas will be tested directly in the field to determine the best formula to stimulate growth and suppress blast disease in local brown rice jatiluwih. The formulas tested were sand, flour, liquid PPG, compost and control which was given 1% mixture of PGPR bacteria 4 kinds of rhizobacteria, namely Serratia marcescens, Achromobacter spanius, Providencia vermicola, Myroldes adoratimimis. 1 clump of seeds immersed in the formula for 24 hours then sowing in the field. each treatment repeated 5 times. The planting pattern in this study used a randomized block design (RBD) and observed variables ranging from growth to yield. All data obtained were analyzed quantitatively using analysis of variance (ANOVA) at the 5% level. The results showed that all treatments using the formulas could stimulate the growth and resistance of brown rice plants to blast disease then the yield of brown rice plants could be increased. Liquid PPG and rhizobacteria PGPR formulas that have better capabilities than other formulas.
Tingkat Perkembangan Nematoda Puru Akar (Meloidogyne spp.) pada Berbagai Jenis Tanaman Tomat Menggunakan Pengendalian Ekstrak Daun Kirinyuh KIKI AMELIA RAMADHANY; I MADE SUDANA; I DEWA PUTU SINGARSA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.10, No.3, Juli 2021
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Development Rate of Root-Knot Nematode Meloidogyne spp. in Various Types of Tomato Plants Controlled with Siam Weed Extract The tomato plant, which is included in the Solanaceae family, is an annual herbaceous plant with a height between 70-200 cm, depending on the variety. Susenas (2012) reported that the average growth of tomato consumption in Indonesia in 2007-2011 is 2.1%. Based on data from the Central Statistics Agency (2005) in Taufik et al. (2014), tomato production in 2012 experienced a decrease in the amount of production from the previous year (2011), from 954,046 tons to 893,463 tons. Meanwhile, domestic demand for tomatoes in 2012 amounted to 904,000 tons, resulting in 10,537 tons of imported tomatoes (Pusdatin, 2014). One of the causes of the decline in tomato production is the disruption of plant pests, leading to failure. One of the diseases that attack tomatoes at all stages of growth is a root-knot disease caused by the nematode Meloidogyne spp. that live in plant nodules. Control of Meloidogyne spp. was done by using trap crops, crop rotation, and so on. In this study, we used biological control, using Siam weed leaf extract (Chromolaena Odorata L.). The results showed that the high level of development in tomato plant varieties could be known through the research data, including the number of roots and egg masses. The number of eggs indicated that the yellow cherry variety was higher than the varieties of red cherries, swadesi, serpo, and agata.
Uji Efektivitas Ekstrak Beberapa Jenis Rimpang Jahe (Zingiber officinale Rosc.) Terhadap Patogen Phytophthora palmivora Butl. Penyebab Busuk Buah Kakao MARTINA E SITEPU; NI WAYAN SUNITI; I DEWA PUTU SINGARSA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.8, No.3, Juli 2019
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Effectiveness of Some Ginger Extracts (Zingiber officinale Rosc.) against the Pathogen of Phytophthora palmivora Butl. Causes of Cocoa Fruit Rot The purpose of this study was to determine the effectiveness of some ginger (Zingiber officinale Rosc.) extracts to prevent pathogen of Phytophthora palmivora Butl. causes of cocoa fruit rot. In vitro, the concentrations of 0,1%, 0,2%, 0.25%, 0.5%, 1%, 1.5%, 2%, and 2.5% were tested to determine the Minimum Inhibitory Concentration (MIC) while the extract concentration of 0.25%, 0.5%, 1%, 1.5%, 2%, 2.5% were tested to determine the percentage of inhibitability of Phytophtora palmivora Butl. The concentrations of 0.25%, 0.5%, 1%, 1.5%, 2%, and 2.5% were tested in vivo at the Laboratory to determine the effectiveness of extracting ginger rhizomes in controlling fruit rot in cocoa plants. The results of the in vitro test showed that the MIC of Z. officinale var. officinale rhizome extract was 0,25%, while the MIC of Z. officinale var. rubrum rhizome and Z. officinale var. amarum were 0.1%. The concentration of inhibition of Z.officinale var officinale extract, Z.officinale var rubrum extract and Z.officinale var amarum extract are most effective against the growth of colonies of Phytopthora palmivora Butl. was 2.5% with the inhibition were 48,74%, 72,78%, 79,03%. The result of the in vivo test showed that the Z.officinale var amarum extract effectively suppressing the attack of cocoa rot fruit pathogens marked by the decrease of percentage by 80%.
Uji Efektifitas Berbagai Konsentrasi Ekstrak Daun Tanaman Terhadap Penekanan Populasi Nematoda Puru Akar (Meloidogyne spp.) dalam Tanah, Akar, dan Produksi Tanaman Tomat (Lycopersicum esculentum Mill.) NI MADE PUTRI YUDANTARI; MADE SRITAMIN; I DEWA PUTU SINGARSA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.4, No.3, Juli 2015
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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ABSTRACT Test the Effectiveness of Various Concentrations of Plant Leaf Extracts Against Root Knot Nematode Suppression (Meloidogyne spp.) In Soil, Roots, and Production Tomato Plants (Lycopersicum esculentum Mill.). Root knot disease is a disease caused by root knot nematodes Meloidogyne spp. Nematodes grown on the roots of plants by inhibiting nutrients that interfere with the process of photosynthesis and stunted plants showing symptoms, while wilting, and permanent wilting on the plant at ground level. While the plants in the basement there is a knot at the root. In this study to control root knot Meloidogyne spp. using sirih (Piper betle Linn.), kirinyuh (Chomolaena odorata Linn.), and tembelekan (Lantana camara Linn.) with a concentration of 100 cc/polybag, 200 cc/polybag, and 300 cc/ polybag of each extract solution leaves the test.The results of the calculation of the population of nematodes per 300 g soil showed sirih extract suppressed the population of root knot nematodes Meloidogyne spp. the good, 23 pcs/??300 g soil, with an emphasis percentage of 95.4%, next is to extract kirinyuh 26 psc/300 g soil (94.7%), and extract tembelekan 27 psc/300 g soil (94.4 %). In the calculation of the population of root knot nematodes Meloidogyne spp. per 1 g of roots, extract of piper betle was the most good in suppressing root knot nematode populations, there are only 22 pcs/1 g roots, with a percentage of 95.5%, followed by extracts of kirinyuh 24 pcs/1 g roots (95.1%) , and extract of tembelekan 28 psc/1 g roots (94.3%).   Keywords: Chromolaena odorata Linn., Lantana camara Linn., Lycpersicum esculentum Mill., Piper betle Linn..
Uji Daya Hambat Jamur Antagonis terhadap Jamur Penyebab Penyakit Utama pada Tanaman Ubi Jalar Ungu (Ipomoea batatas (L.)) Secara In Vitro NI WAYAN EKA SUDI ARTI; NI WAYAN SUNITI; I DEWA PUTU SINGARSA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.10, No.3, Juli 2021
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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In Vitro InhibitionTest of Antagonistic Fungi on Pathogenic Fungi of the Main Diseases in Purple Sweet Potatoes (Ipomoea batatas (L.) Purple sweet potato is a plant commodity that is in great demand by people today. Peringsari Village, Selat Sub-district, Karangasem Regency is one of the sweet potato-producing areas in Bali. The purple sweet potato plant developed in Peringsari village shows many symptoms of the disease on the stems and leaves of the plant. The cause of the main disease of this plant is not yet known, but the symptoms shown are such as attack by pathogenic fungi. This purple sweet potato disease does not get much attention from farmers because it is considered to have no effect in terms of the quantity and quality of sweet potatoes. The purpose of this study was to determine the main pathogens that cause disease in purple sweet potato plants and to determine which antagonistic fungi are effective in suppressing the growth of pathogens in purple sweet potato plants in Peringsari Village, Selat District, Karangasem Regency. This research was conducted in Peringsari Village, Selat Subdistrict, Karangasem Regency for sampling to be continued at the Plant Disease Laboratory, Faculty of Agriculture, Udayana University. Field observations, isolation, and morphological identification showed that the main disease-causing pathogen in purple sweet potato was the fungus Fusarium sp. and the antagonistic fungi that can control pathogenic fungi in vitro are Trichoderma asperilum, Trichoderma harzianum, Trichoderma koningii, and Trichoderma viride.
Tingkat Fekunditas Nematoda (Meloidogyne spp.) pada Beberapa Tanaman yang Tergolong Familia Solanaceae DWI RIZKYA WULANDARI; I MADE SUDANA; I DEWA PUTU SINGARSA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.8, No.4, Oktober 2019
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

Fecundity of Nematode (Meloidogyne spp.) in Some Plants Belonging to the Solanaceae Family The Solanaceae family is a plants that has a function to meet human food. Although the production of the Solanaceae Family in Indonesia is quite high, it hasnot been able to fulfill the Indonesian Population needs. This is caused by severalfactors and one of them is the attack of pests and diseases that can cause crop failure.Pest that causes a decrease in the Solanaceae family is root bran nematodes,(Meloidogyne spp.) The purpose of the study is to determine the level of penetrationand fecundity of nematodes in several plants belonging to the Solanaceae family, andto obtain species host plants that are less favored than the plants tested Thar can beused as an alternative control of nematoda. This study using a CompletelyRandomized Design (CRD), with 4 types of treatment each using 6 replications with2 research objects to obtain 48 units/plant pots. The results is penetration rate andfecundity rate were highest in tomato plants, then in eggplant plants, chili plants, andthe lowest in cayenne. The result can be used as an alternative to reduce thepopulation of nematoda (Meloidogyne spp.) in the field.
Uji Daya Hambat Jamur Endofit Terhadap Phytophthora palmivora (Butler) Butler Penyebab Penyakit Busuk Buah Kakao Secara in Vitro GEDE DANGU INDRAWANGSA; I MADE SUDARMA; I DEWA PUTU SINGARSA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.6, No.3, Juli 2017
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

In Vitro Inhibition Test of Endophytic Fungi Againts Phytopthora palmivora (Butler) Butler the cause of Black Pod Desease on Cocoa Cocoa plant is an important industrial crops in Indonesia. Cocoa is the industrial raw materials manufacture of chocolate. Indonesia is one of the biggest cocoa producer in the world. The land area and the climate in Indonesia is really good for supportingits cultivation so that it has a good potentialas an important commodity. The utilization of biological agents to control the black pod disease caused by Phytophthora palmivora is one of the solutions which is safe for the environtment. This study was aimed to determine the type and the effectivity of endophytic fungi as biological agents to control the black pod disease disease of cocoa caused by P. palmivora. This study included several steps which are: Pathogen isolation, endhopytic fungi isolation, endhopytic fungi identification, and antagonistic test. The result showed that P. palmivora was found as the main pathogen which caused the black pod desease of cocoa. Neurospora sp., Trichoderma sp., Aspergillus flavus, Aspergillus niger, Aspergilus spp. were types of endophytic fungi which had the best inhibition among the other endhophytic fungus. Endophytic fungi was able to control pathogen by antibiosis. Trichoderma sp. was the fungi which is able to control the pathogen by antibiosis by excreting antibiotical compound that is dangerous for pathogen.
Pengaruh Penerapan Paket Teknologi Terhadap Hama Kutu Daun (Myzus Persicae Sulz.) dan Lalat Buah (Bactrocera Doralis Comp.) Pada Tanaman Cabai Rawit (Capsicum frutescens L.) dan Cabai Besar (Capsicum annuum L.) di Dataran Rendah NI KADEK NINA ARI SUCI; I DEWA PUTU SINGARSA; I KETUT SUMIARTHA; I PUTU SUDIARTA; GUSTI NGURAH ALIT SUSANTA WIRYA; I MADE SUPARTHA UTAMA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.8, No.1, Januari 2019
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

The Influence of Packages Technology to Aphid Insect (Myzus persicae Sulz) and Fruit Flies (Bactrocera doralis Comp.) on Cayenne Chilli (Capsicum frutescens L.) and Long Chilli (Capsicum annuum L.) in the Lowlands This research aims are to determine the influence and effectiveness of technology using Trichoderma’s compost, rain shelters, and pesticid eto developmentof insect pests on long chilli and cayenne chilli in the lowlands. This research was conducted from January to April 2018 in Sempidi Village, Mengwi District, Badung Regency. The research method using Randomize Block Design with the factor pattern consisted of 8 treatments and 4 replications. Parameters observed were population of aphid insect and fruit flies, and total crop yield as supporting the data. This result showed that the highest percentage of damage by aphids on the treatment of V1P0 (cayenne chilli control) was 5% and V2P0 (large chilli control) of 10% in two week after treatment. The highest percentage of fruit fly damage on V2P0 tretament was 2.77% and V1P2 is 2.28% at 1st time of harvest. The lowest percentage of aphid damage and fruit fly on treatment V2P2 (large chili with rain shelters) and V1P2 (cayenne chili with rain shelters), aphids damage were 5% and 10% on 9 week after transplanting, and fruit fly damage were 0.94% and 0.76% at 1st time of harvest. The highest yield was obtained on Trichoderma treatment on cayenne chili and large chili with total weight of 509.28gr and 3618.88gr, respectively. From the results of this research was found that the use of rain shelters technology, Trichoderma and pesticides, affect the damage of aphids, fruit flies, and crops yield.
Efektivitas Beberapa Fungisida Sintetis Terhadap Pertumbuhan Patogen Penyakit Kudis (Diaporthe phaseolorum C.&E.) pada Tanaman Jeruk Siam (Citrus nobilis L.) I PUTU MAHA DARMA NATHA; I MADE SUDANA; I DEWA PUTU SINGARSA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.11, No.3, Juli 2022
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Effectiveness of Some Synthetic Fungicides to Scabies Disease Pathogen (Diaporthe phaseolorum C.&E.) Growth on Siam Orange Fruit (Citrus nobilis L.) Siam orange is one of the main commodities produced in Payangan District, Gianyar, Bali. Unfortunately, the Siam orange is often attacked by scabies. This disease is named scabies because it produces scab-like lesions that develop mainly on the skin of the fruit. Scabies is caused by the fungus Diaporthe phaseolorum. In order to increase the production of Siam oranges in Payangan, it is necessary to control this pathogen. The purpose of this study was to determine the effectiveness of synthetic fungicides in controlling scabies in Siam orange fruit and to determine the most effective synthetic fungicides to use. This research was conducted in a citrus orchard in Kerta Village, Payangan District, Gianyar, Bali. PS3 treatment Mankozeb + Mefenoxam, was the most effective in suppressing the growth of scabies in Siam oranges. The average PS3 is the smallest in the percentage of disease per tree, which is 70%, followed by the average fruit diameter of PS3 which produces the largest fruit, which is 19.25 cm, as well as the average intensity of PS3 disease is the smallest, which is 24.63%. The results of observations carried out showed that the administration of synthetic fungicides was effective in suppressing the growth of pathogens that cause scabies in Siam oranges in Payangan, especially the synthetic fungicide Mankozeb + Mefenoxam.
Pengaruh Fungisida Berbahan Aktif Tunggal dan Campuran Metiltiofanat dan Karbendazim Terhadap Pertumbuhan Jamur Colletotrichum scovillei Secara In Vitro TESSALONIKA G SIANIPAR; KHAMDAN KHALIMI; I DEWA PUTU SINGARSA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.12, No.1, Januari 2023
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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The Effect of Concentration of Single Active Ingredients and Mixture of Methylthiofanate and Carbendazim on the Growth Of Mushrooms Colletotrichum scovillei In Vitro Anthracnose is still the main disease in chili plants, anthracnose in chili peppers can be caused by some of the fungal species Colletotrichum. According to a report obtained from a field survey in 2018 found that Colletotrichum scovillei fungus is a species that infects large chili plants in Bali. An effort to control anthracnose is to use fungicides with active ingredients methylthiofanate and carbendazim. This study aims to determine the appropriate concentration of fungicides with the active ingredients of methylthiofanate, carbendazim and a mixture of methylthiofanate and carbendazim to inhibit the growth of the fungus C. scovillei in vitro. The fungicide inhibition test was carried out using the Poisoned Food Technique. The results showed that the active ingredient fungicide methylthiofanate, carbendazim, a mixture of methylthiofanate and carbendazim at a concentration of 1.5 ml/l effectively inhibited the growth of the fungus C. scovillei in vitro. The results of this study provide information that the tested fungicides are effective in inhibiting the growth of the fungus C. scovillei which causes anthracnose on chili peppers in Bali.
Co-Authors B.R.T. Putri DWI RIZKYA WULANDARI GEDE DANGU INDRAWANGSA Gusti Ngurah Alit Susanta Wirya I GUSTI PUTU RATNA ADI I Ketut Sardiana I KETUT SUMIARTHA I MADE SUDANA I MADE SUDANA I MADE SUDANA I MADE SUDARMA I MADE SUPARTHA UTAMA I N. Puja I PUTU MAHA DARMA NATHA I Putu Sudiarta K.K. Dinata KHAMDAN KHALIMI KIKI AMELIA RAMADHANY MADE SRITAMIN MARTINA E SITEPU N.L.R. Purnawan N.L.R. Purnawan N.N. Yastini NI KADEK NINA ARI SUCI Ni Luh Gde Sumardani NI LUH MADE PRADNYAWATHI NI MADE PUTRI YUDANTARI NI WAYAN EKA SUDI ARTI NI WAYAN SUNITI NURMALA CZ SITUNGKIR SUNARTI TAMBUNAN TESSALONIKA G SIANIPAR TRIWANTO NABABAN W.P. Windia