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Pengaruh Jenis Dedak dan Turunan Benih terhadap Pertumbuhan dan Hasil Jamur Tiram Merah (Pleurotus flabellatus) NI PUTU EKA APRIASTUTI; GEDE WIJANA; I WAYAN DIARA
Agrotrop : Journal on Agriculture Science Vol 11 No 2 (2021)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/AJoAS.2021.v11.i02.p03

The Effect of Bran Type and Seed Derivatives on The Growth and Yield of Red Oyster Mushroom (Pleurotus flabellatus). Jenis dedak dan turunan benih merupakan faktor yang berperan terhadap pertumbuhan dan hasil jamur tiram merah (Pleurotus flabellatus). Jamur tiram dapat tumbuh alami atau dapat memanfaatkan media tanam serbuk kayu yang disebut baglog. Tujuan penelitian ini untuk menemukan jenis dedak, turunan benih dan kombinasi yang terbaik terhadap pertumbuhan dan hasil jamur tiram merah. Perlakuan terdiri atas dua faktor yang didesain dengan rancangan acak kelompok (RAK). Faktor pertama adalah jenis dedak yang terdiri atas dedak beras putih, dedak beras merah dan dedak gandum. Faktor kedua adalah turunan benih yang terdiri atas benih F2, benih F3 dan benih F4, semua perlakuan diulang lima kali. Hasil penelitian menunjukkan adanya pengaruh interaksi antara perlakuan jenis dedak dan turunan benih pada setiap variabel yang diamati, kecuali pada panjang tangkai tudung pada panen kedua dan keempat, diameter tudung pada panen pertama dan keempat. Jenis dedak beras merah dan turunan benih F2 menghasilkan berat segar jamur per baglog setiap panen tertinggi dari panen 1, 2, 3 dan 4 masing-masing yaitu 66,59 g, 64,77 g, 50,30 g dan 36,34 g. Jenis dedak beras merah dan turunan benih F2 memberikan hasil total panen berat segar jamur per baglog tertinggi yaitu 217,99 g.

Pemanfaatan Biochar sebagai Pembawa Rhizobium terhadap Pembentukan Bintil Akar dan Hasil Tanaman Kedelai (Glycine max L. Merril) NI PUTU NENA LUSIANA; ANAK AGUNG NGURAH GEDE SUWASTIKA; I WAYAN DANA ATMAJA; ANAK AGUNG ISTRI KESUMADEWI
Agrotrop : Journal on Agriculture Science Vol 11 No 2 (2021)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/AJoAS.2021.v11.i02.p08

The Utilization of Biochar as a Carrier of Rhizobium for the formation of root nodules and Yield of Soybean (Glycine max L. Merril). This study aims to determine the effect of the type of raw materials and particle size of biochar as a Rhizobium carrier on the formation of nodules in soybean plants. This research was conducted from September to November 2020 at the Experimental Station and Laboratory of Soil and Environmental Sciences, Faculty of Agriculture, Udayana University. The research design used was a randomized block design with nested patterns with 2 factorials and 3 replications. The treatment factors consisted of B1 = bamboo biochar, B2 = albasia wood biochar, B3 = corncob biochar, B4 = young coconut skin biochar, P1 = (0,15-0,50 mm), P2 = (>0,50-1,68 mm), P3 = (>1,68-3,36 mm). The parameters observed included effective nodule, nodule size, total bacterial population, ammonium, nitrate, and plant yield. The result of the analysis showed that the type of biochar raw materials had a very significant effect on the parameters of effective nodules, nodules size, total bacterial population and plant yield, but had no significant effect on soil chemical parameters. The treatment of biochar particle size had a very significant effect on the parameters of effective nodules, total bacterial population, and plant yield, and had a significant effect on the size of nodules, but had no significant effect on soil chemical parameters. The conclusion of this study is that the type of raw material for albasia wood biochar is effective as a Rhizobium carrier, which is indicated by the high number of effective nodules, nodules size and total bacterial population of 0,15-1,68 mm particles.

Strategi Peningkatan Efektivitas Masyarakat Peduli Api (MPA) Dalam Pengendalian Kebakaran Hutan di Provinsi Bali DARJO DARJO; I WAYAN SUARNA; GEDE WIJANA
Agrotrop : Journal on Agriculture Science Vol 11 No 2 (2021)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/AJoAS.2021.v11.i02.p04

Strategy For Improving Effectiveness of Fire Care Society (MPA) in Control of Forest Fire in Bali Province. Land and forest fires seem to be an annual disaster in Indonesia. The Ministry of Environment and Forestry is initiated to form Fire Care Community Groups, called Fire Care Society (MPA). MPA in Bali has been established since 2012. The study is needed to determine the community perception who live around the forest areas, to determine the effectiveness of MPA, and to analyzed strategic increases the effectiveness of MPAregarding forest fires controlling. Research data has been collected through a closed questionnaire to compile the respond of respondents in the google form. The respondent consisted of MPA member and non-member and related stakeholders. The types of data that been collected include respondent’s perceptions, MPA participation, and implementation of Perdirjen PPI number 3, 2018. These data then analyzed with the SWOT method. The results showed that the MPA and non-MPA members have positive perception of natural factor and human behavior as a factor of forest fires. The highest value of MPA’s participation in fires-fighting is 3.71 and participation influenced by environmental factors valued at 3.84. While the implementation of Perdirjen PPI decree is 66.39%. The SWOT analysis shows the MPA in progressive strategic S-O. So this study concludes that the MPA hasn’t been fully effective. The effectiveness can be improved by providing adequate support through clear regulations, budget allocations, and increasing human resource capacity.

Respon Produksi dan Kualitas Buah Salak Gula Pasir (Salacca zalacca var. Gula Pasir) terhadap Dosis Pupuk Hayati Mikoriza NADA SAHARA; I NYOMAN RAI; I WAYAN WIRAATMAJA
Agrotrop : Journal on Agriculture Science Vol 11 No 2 (2021)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/AJoAS.2021.v11.i02.p09

Production and Quality of Salak Gula Pasir (Salacca zalacca var. Gula Pasir) in Response to Application of Dosages of Mycorrhiza Biofertilizer. Mycorrhiza is a fungus that live symbiosis mutualism with the root of the plant. Mycorrhiza has several benefits that improve the soil structure an increase the absorption of nutrients and water for plant. This research aimed to know response of production and quality of salak gula pasir (salacca zalacca var. Gula Pasir) fruit to dose of mycorrhiza biofertilizer application. This study used a randomized block design (RBD) with 4 levels of mycorrhiza biofertilizer dosages, i.e. 0, 50, 100, and 150 spores per 500 g of carrier media. Each treatment was repeated 10 times. The results showed mycorrhiza dose of 50, 100, and 150 spores per 500 g carrier media increase the amount of fruits bunches in each plant, the sweetness level of fruit and root infections/colonization by mycorrhiza.

Pengaruh Ukuran Biochar Bambu dan Dosis Pupuk Urea terhadap Efisiensi Pupuk dan Hasil Tanaman Sawi Hijau (Brassica juncea L.) pada Tanah Berpasir ANAK AGUNG GDE PREHATRESNA ADI ASMARA; I WAYAN DANA ATMAJA; ANAK AGUNG NGURAH GEDE SUWASTIKA; ANAK AGUNG ISTRI KESUMADEWI
Agrotrop : Journal on Agriculture Science Vol 11 No 2 (2021)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/AJoAS.2021.v11.i02.p05

The Effect of Bamboo Biochar Size and Urea Fertilizer Dosage on Fertilizer Efficiency and Yield of Green Mustard (Brassica juncea L.) in Sandy Soil. Biochar is charcoal produced from incomplete combustion (carbonization). Biochar is a soil amendment agent that has long been known in agriculture which is useful for increasing soil productivity. This study aims to determine the effect of bamboo biochar size and urea fertilizer dosage on the efficiency of urea fertilizer and yield of green mustard (Brassica juncea L.). This research was conducted from May 2020 to September 2020 at the Experimental Garden of the Faculty of Agriculture, and at the Laboratory of Soil and Environmental Sciences, Faculty of Agriculture, Udayana University. The research design used was a completely randomized design (CRD) with 2 factorials and 3 replications. The treatment factors consisted of P0 = 0kg urea (control) (0 grams / pot), P1 = 100kg urea / ha (0.2 grams / pot), P2 = 200kg urea / ha (0.4 grams / pot), P3 = 300kg urea / ha (0.6 gram / pot), B1 = 0.25-2.00 mm, B2 = 2.38-2.83 mm, B3 = 2.83-3.36 mm. The parameters observed were levels of ammonium, nitrate, soil pH, microbial population, soil respiration, crop yields including fresh weight and oven dry weight of the plant. The results of the analysis showed that the effect of biochar and urea fertilizers interacted very significantly with the parameters of the microbial population and had no significant effect on the parameters of ammonium, nitrate, soil pH, soil respiration, plant fresh weight, plant dry weight, root fresh weight, root dry weight and efficiency. fertilizer. Biochar treatment has a significant effect on biological factors and fertilizer treatment affects soil chemical properties, crop yields are influenced by a single factor.

Perkecambahan Asimbiotik Biji Anggrek Dendrobium bicaudatum pada Media dengan Penambahan Ekstrak Tomat secara In Vitro NI WAYAN SURIANTARI; IDA AYU PUTRI DARMAWATI; HESTIN YUSWANTI
Agrotrop : Journal on Agriculture Science Vol 12 No 1 (2022)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/AJoAS.2022.v12.i01.p05

Asymbiotic Germination of Dendrobium bicaudatum Orchid Seeds on Media with In Vitro Addition of Tomato Extract. Dendrobium bicaudatum is a natural orchid that needs to be preserved. Orchid seeds propagation naturally (symbiotic) has a low success rate. Orchid seeds do not have an endosperm. Asymbiotic germination with in vitro culture techniques can be an alternative solution for the propagation of orchid seeds. This study aimed to determine the effect of giving tomato extract on modified media on the asymbiotic germination of Dendrobium bicaudatum orchid seeds. This research used the Completely Randomized Design with five treatments of tomato extract concentration, namely 0%, 5%, 10%, 15%, 20%, with 4 replications. The variables observed in this study were the time and percentage of phase 1; time and percentage of phase 2; time and percentage of phase 3; time and percentage of phase 4; time and percentage of phase 5; and time and percentage of phase 6. The results showed that the tomato extract treatment had a significant or very significant effect on the germination of Dendrobium bicaudatum orchid seeds and the best treatment for the fastest and the highest percentage of germination from protocorm to First Leaf Primodium was the addition of tomato extract with a concentration of 15% or 20%, and a concentration of 0% tomato extract for the early stages of swelling of the embryo.

Distribusi dan Kemampuan Adaptasi Spodoptera frugiperda (J. E Smith) (Lepidoptera: Noctuidae) Terhadap Tanaman Inang pada Beberapa Ketinggian Tempat di Bali PUTU SUSY LISTYAWATI; I NYOMAN WIJAYA; DWI WIDANINGSIH; I WAYAN SUPARTHA
Agrotrop : Journal on Agriculture Science Vol 12 No 1 (2022)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/AJoAS.2022.v12.i01.p10

Distribution and Adaptability of Fall Army Worm, Spodoptera frugiperda (J.E Smith) (Lepidoptera: Noctuidae) Against Host Plants at Several Altitudes in Bali. The armyworm pest (Spodoptera frugiperda J.E. Smith) was first discovered attacking maize plants in Sumatra in 2019.These pests move very quickly from a wide range of altitude and host plant, while in Bali only discovered this pest attack maize plants at an altitude <500 meters above sea level (masl). The purpose of this study was to determine the distribution map of S. frugiperda, to determine the population and host plants in the field and to determine the attack of S. frugiperda at several altitudes in Bali. This study used purposive survey method. Plant sampling was carried out in all regencies of Bali Province by means of diagonal sampling. The size of unit sample was2 x 2 m and the number of plants observed was 20 plants. The results showed that the pest S. frugiperda had spread in the highland up to (> 1000 masl) which attacked maize and sorghum in Bali. The distribution area of the pest are Tabanan, Badung, Gianyar, Klungkung, Karangasem, Bangli, Buleleng, Jembrana and Denpasar. The population of S. frugiperda was found until the highland (> 1000 masl) with a population of host plants is still low and spread at 5 altitude with type host plants found, sweet corn, glutinous corn, corn pipil, local corn and sorghum. he percentage of S. frugiperda attacks at 5 altitudes in Bali is 11.71% to 35.13%.

Insidensi Serangan dan Perkembangan Populasi Hama Invasif, Spodoptera frugiperda (J. E Smith) (Lepidoptera: Noctuidae) pada Tanaman Jagung dan Sorgum di Bali CRISTINE LAURINE SIMANJUNTAK; I KETUT SUMIARTHA; KETUT AYU YULIADHI; I WAYAN SUPARTHA
Agrotrop : Journal on Agriculture Science Vol 12 No 1 (2022)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/AJoAS.2022.v12.i01.p01

Incidence of Attacks and Population Development of Invasive Pests, Spodoptera frugiperda (J.E Smith) (Lepidoptera: Noctuidae) on Corn and Sorghum Crops in Bali. Spodoptera frugiperda is known as an invasive pest which now become important pest on corn crops in Indonesia and Bali in particular, but in this study the Spodoptera frugiperda was also found to attack sorghum. This study used purposive survey method and on land that had been fixed. Plant sampling was carried out in all regencies of Bali Province by means of diagonal sampling. The size of unit sample was 2 x 2m and the number of plants observed was 20 plants. The results of this study showed that the incidence of S. frugiperda attack has been observed on plant beds in all districts/cities in Bali which is indicated by symptoms of attack and abundance of S. frugiperda population on corn and sorghum in the field. The highest abundance of S. frugiperda larvae population was in sweet corn in Klungkung Regency as much as 38.67 heads, and the lowest was in sorghum numbu in Tabanan Regency as many as 27.00 individuals per observation plot. Population development of egg groups was found in plants aged 1 (MST) while larvae of S. frugiperda showed the same pattern in sweet corn, sticky rice and pipil plants and the peak of larval population occurred in plants aged 4 WATS respectively. While the peak population of larvae in sorghum plants occurred at 5 WAP and imago populations in sweet corn were found in sweet corn plants at 2 WAP and glutinous corn at 4 WAP. The highest percentage of S. frugiperda attack was on sweet corn with an average attack of 43% per observation plot and the lowest on sorghum numbu with an average of 25% per observation plot.

Efektivitas Trichoderma sp. dan Gliocladium sp. untuk Pengendalian Penyakit Busuk Batang (Fusarium Oxysporum Sp.) pada Tanaman Vanili (Vanilla Planifolia) MEI NOVITA BR PARDEDE; GUSTI NGURAH ALIT SUSANTA WIRYA; KHAMDAN KALIMI
Agrotrop : Journal on Agriculture Science Vol 12 No 1 (2022)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/AJoAS.2022.v12.i01.p06

Effectiveness of Trichoderma sp. and Gliocladium sp. For Controlling Stem Rot (Fusarium Oxysporum sp.) in Vanilla (Vanilla planifolia). Vanilla (Vanilla planifolia Andrews) is one of the industrial plants that have very high economic value as an export commodity. One of the main obstacles to increasing vanilla production is stem rot disease. Stem rot disease caused by Fusarium oxysporum f. sp. vanillae became one of the main obstacles faced. This research on the effectiveness of antagonistic microbes aims to obtain the best antagonist microbes in suppressing stem rot disease in vanilla plants. The experiment was carried out in vitro at the Laboratory of Plant Diseases at Udayana University and in vivo at the Experimental Garden Greenhouse. The experiment used a randomized block design with six replications and four treatments, namely Control (without antagonistic microbes), G (Gliocladium sp. + compost), T (Trichoderma sp. + compost), and GT (Gliocladium sp. and Trichoderma sp. + compost). The results showed that T (Trichoderma sp. + compost) and GT (Gliocladium sp. and Trichoderma sp. + compost) able inhibit stem rot disease with the best percentage of 10%.

Tanggap Parasitoid Braconidae (Hymenoptera) Terhadap Hama Invasif Liriomyza trifolii (Burgess) (Diptera: Agromyzidae) pada Tanaman Sayuran dan Hias di Bali TIA GUNAWAN SARI; A. A. AYU AGUNG SRI SUNARI; I WAYAN SUPARTHA
Agrotrop : Journal on Agriculture Science Vol 12 No 1 (2022)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/AJoAS.2022.v12.i01.p11

Response of Braconid Parasitoid Against Invasive Pest, Liriomyza trifolii (Burgess) (Diptera: Agromyzidae) on Vegetable and Ornamental Crops in Bali. Research on the respopnse of Braconid parasitoids to the invasive pest, Liriomyza trifolii that attacks ornamental plants and vegetables in Bali, was carried out from September 2020 to March 2021. This study aimed to determine the type and abundance of parasitoid populations that responded to Liriomyza trifolii on host plants in the field. In addition, this study also aims to evaluate the level of parasitization of each parasitoid against L. trifolii. This study used a purposive sampling method by taking leaf samples that showed active symptoms of Liriomyza larvae in the leaves of plants. The research focused on vegetables and ornamental plants cultivated in lowlands <500 meters above sea level (masl), mediumlands 500-1000 meters above sea level and highlands> 1000 meters above sea level. The results showed that there were two species of Braconid parasitoids that responded to Liriomyza trifolii in the field, namely Opius dissitus and Opius cromatomiyae. The relative abundance and degree of parasitization of the two parasitoids showed variation between host plant species and altitude. The relative abundance of O. dissituse was high in chrysanthemum (10.81%) at an altitude of >1000 masl and low in long beans (0.53%) at an altitude of <500 masl. The highest relative abundance of O. cromatomiyae was in marigold flowers (51.18%) at an altitude of <500 masl and the lowest was in chrysanthemum (44.83%) at an altitude of > 1000 masl. The highest level of parasitization of O. dissitus was found in pakcoy plants (50.00%) at an altitude of >1000 masl and the lowest was in mustard plants (6.06%) at an altitude of <500 masl. The highest level of parasitization of O. cromatomiyae was in celery (33.33%) at an altitude <500 masl and the lowest was in tomato plants (25.00%) at an altitude> 1000 masl. Both species of Braconid parasitoids have high potential as biological control agents for L. trifolii as indicated by their relative abundance and high levels of parasitization against these invasive pests.

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Journal Mail Official
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Kota denpasar,

Bali

INDONESIA