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Gedung Agrokomplek Lantai 2, Fakultas Pertanian, Universitas Udayana Jl. P.B. Sudirman, Denpasar, Bali (80232) Telp. (0361) 222450, Fax. (0361) 702801
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Nandur
Published by Universitas Udayana
ISSN : -     EISSN : 27466957     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Nandur adalah Jurnal Ilmiah Pertanian yang mempublikasikan dan menyebarluaskan hasil penelitian/naskah hasil riset (original research) kepada para peneliti dan ilmuwan di bidang pertanian yang mencakup bidang ilmu Agroekoteknologi, Agribisnis, dan Arsitektur Pertamanan. Naskah yang diterbitkan ditulis dalam bahasa Indonesia dan melalui proses review pada Fakultas Pertanian, Universitas Udayana.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 81 Documents
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Isolasi dan Identifikasi Bakteri Selulolitik pada Buah Kopi Arabika (Coffea arabica L.) Nona Au Waling; Made Sritamin; I Nyoman Wijaya
Nandur Vol 1 No 3 (2021)
Publisher : Fakultas Pertanian, Universitas Udayana

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Abstract

Cellulolytic bacteria are microorganisms that can produce cellulase enzymes. Cellulolytic bacteria contain cellulase enzymes that play a role in the cellulose degradation processes. The purpose of this study was to isolate cellulolytic bacteria that capable to degrading cellulose from arabica coffee cherries collected from Catur Village, Kintamani. The results of bacterial isolation at 10-6 and 10-8 dilutions obtained 10 bacterial colonies. From the results of bacterial purification, 4 different bacterial isolates had different morphological characters. The results of the isolation of the colonies showed differences in a round and irregular shape, had raised and convex surfaces had red, cream, white and yellow colors, had curved and smooth edges. Tests were carried out on four bacterial isolates to determine the clear zone index. Only the L isolate in the congo red test had a diameter of clear zone 2.5 mm and with score 3 based on cellulolytic index value L isolate categorized as strong degrading cellulose bacteria.
Isolasi Bakteri Selulolitik dari Buah Kopi Robusta (Coffea canephora) dan Uji Kemampuan Degradasi pada Buah Kopi Merlyna Rosalia; Wayan Adiartayasa; I Gede Putu Wirawan
Nandur Vol 1 No 1 (2021)
Publisher : Fakultas Pertanian, Universitas Udayana

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Abstract

Coffee fruit contains high cellulose and lignin. Cellulose is the most abundant polysaccharide found in plants, cellulose in nature forms crystals so that cellulose is difficult to degrade. Cellulose can be broken down using cellulase enzymes produced by microorganisms. One of the microorganisms capable of producing cellulase enzymes which are used to hydrolyze cellulose into simpler products, namely glucose, is cellulolytic bacteria. The purpose of this study was to identify bacterial isolates that ferment in coffee cherries. The isolation results obtained 97 bacterial colonies that grew, based on observations of color, shape, edges, and surface, they could be grouped into four groups of bacterial isolates named M1, M2, M3, and M4 bacterial isolates, with each cellulolytic index (IS) of 3,00; 0,75; 2,00 and 3,00. The results of the gram stain test obtained one gram-negative bacterial isolate (M2 rod-shaped) and three gram-positive bacterial isolates (M1 in the form of a focus, M3 and M4 in the form of a rod). Bacterial isolates M1 and M3 degraded the earliest coffee cherries with an average of 2.66 days after inoculation and no later than 6 day after inoculation in M2M4 and M3M4 bacterial isolates. The ability to degrade bacterial isolates in coffee cherries was obtained 2 - 5.34 days faster than the control.
Analisis Status Kerusakan Tanah pada Lahan Sawah di Subak Kecamatan Denpasar Utara Berbasis Sistem Informasi Geografis Krisdianto Putra Sihombing; I Wayan Narka; Ida Bagus Putu Bhayunagiri
Nandur Vol 2 No 2 (2022)
Publisher : Fakultas Pertanian, Universitas Udayana

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Abstract

This study aims to determine the status of soil damage, limiting factors, create a map of the status of soil damage, and provide recommendations for repairing soil damage. This research was carried out in Subak, North Denpasar District, from December 2020 to February 2021. The research method was carried out using a survey method, namely observation and soil sampling followed by laboratory analysis. Parameters analyzed were solum thickness, surface kerocks, fraction composition, total porosity, bulk density, electrical conductivity, pH, permeability, and the number of microbes. The results showed that the status of soil damage at the study site was classified as undamaged (N) and lightly damaged (R.I). The undamaged status includes Subak Dalem, Subak Lungatad, Subak Ubung and slightly damaged status includes Subak Kedua, Subak Pakel II, Subak Petangan, Subak Pakel I, Subak Sembung. The limiting factors of the research area are permeability and fraction composition. Recommendations for improvement from the results of the research are the application of Organic-Based Controlled Aerobic Rice Intensification (IPAT-BO) technology, such as the provision of organic matter in the form of rice straw residues and good soil management by plowing the land using cattle or tractor power.
Pengaruh Komposisi Media Tanam Terhadap Pertumbuhan Tanaman Kemangi (Ocimun Basilicum L) Secara Vertikultur I Gede Krisna Wardana; Ni Luh Kartini; Ni Nengah Soniari
Nandur Vol 1 No 1 (2020)
Publisher : Fakultas Pertanian, Universitas Udayana

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The research objective was to determine the effect of the composition of the growingmedium on the growth of basil plants. This research was carried out in Banjar DinasBelumbang Kelod, Belumbang Village, Kerambitan District, Tabanan Regency, inJanuary-March 2020. Used was a simple randomized block design (RAK). Thecomposition of the planting medium consisted of vermicompost fertilizer, soil and sandweighing 5 kg per treatment. The treatments tested were as follows M0: Soil + Sand(100%); M1: Soil + vermicompost fertilizer + sand (50%: 50%: 0%); M2: Soil +Kascing Fertilizer + Sand (50%: 0%: 50%); M3: Soil + vermicompost fertilizer + sand(50%: 30%: 20%); M4: Soil + Kascing Fertilizer + Sand (50%: 20%: 30%); M5: Soil +vermicompost fertilizer + sand (40%: 40%: 20%); M6: Soil + Kascing Fertilizer + Sand(40%: 30%: 30%); M7: Soil + Kascing Fertilizer + Sand (30%: 40%: 30%); M8: Soil +vermicompost fertilizer + sand (30%: 50%: 20%). The results showed that the effect ofmedia composition gave significantly different results on plant height, fresh weight onsoil, total fresh weight, dry weight above soil, total dry weight, C-organic content andmicroorganism population. The treatment of soil composition + vermicompost fertilizer+ sand (50%: 20%: 30%) gave the best results for the growth of basil and the totalpopulation of soil microorganisms. The highest yield of fresh basil plant wet weight was40.10 grams, an increase of 2.3% compared to the control. Then the microorganismpopulation increased by 50% compared to the control.
Uji Pupuk Kompos Akibat Penambahan Sludge Minuman Berkarbonasi terhadap Hasil Sawi Hijau (Brassica juncea L.) dan Beberapa Perubahan Sifat Kimia Tanah Devin Ronaldo Naidu; A. A. Nyoman Supadma; I Dewa Made Arthagama
Nandur Vol 1 No 4 (2021)
Publisher : Fakultas Pertanian, Universitas Udayana

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The purpose of this study was to determine the effect of giving additional doses of compost fertilizer with carbonated beverage sludge and sludge on the chemical properties and growth yield of mustard greens (Brassica juncea L.). This research was carried out from March 2021 to May 2021 and used a Randomized Block Design (RBD) consisting of 8 treatments, including control which was repeated three times with 24 experimental pots. The treatment tried was P0 = no fertilizer (control). P1 = 5 tons of compost/ha-1 (11.25 grams of compost/pot-1), P2 = 10 tons of compost/ha-1 (22.5 grams of compost/pot-1), P3 = 15 tons of compost/ha- 1 (34 gr compost/pot-1), P4 = 20 tons compost/ha-1 (45 gr compost/pot-1), P5 = 5 tons sludge/ha-1 (11.25 sludge/pot-1), P6 = 10 tons of sludge/ha-1 (22.5 gr sludge/pot-1), P7 = 15 tons of sludge/ha-1 (34 gr sludge/pot-1). The parameters observed in this study were divided into two observations, observing soil chemical properties, including pH, N-total, P-available, K-available, Electrical Conductivity (EC), C-organic, Cation Exchange Capacity (CEC), and Base Saturation. Plant parameters are consisting of plant height, number of leaves, fresh weight, plant dry weight. The results of statistical analysis showed the fertilizer dose had a very significant effect (P>0.01) on K-available, P-available, BS and had a significant effect (P <0.05) on pH and EC, but had no significant effect (P> 0.05) on N- total, C-organic, CEC, plant height, number of leaves, fresh weight, and plant dry weight. P7 treatment showed that the best improvement in plant parameters such as plant height which increased by 20%, and fresh weight of 45% from the control treatment. The chemical properties of available P-available increased by 25%, available K-available increased by 22%, and BS increased by 10% from the control.
Kelimpahan Thrips parvispinus Karny dan Musuh Alaminya pada Tanaman Cabai Rawit (Capsicum frutescens L.) I Gede Sumaradana; I Nyoman Wijaya; I Made Mega Adnyana
Nandur Vol 1 No 2 (2021)
Publisher : Fakultas Pertanian, Universitas Udayana

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Abstract

This aims of the research is to search the abudance of T. parvispinus Karny and its natural enemies on Cayenne Pepper (Capsicum frutescens.L). The research started from November 2020 to January 2021 at Melinggih Kelod Village, Payangan District, Gianyar Regency and at the Plant Pest Laboratory, Faculty of Agriculture, Udayana University. The study was conducted using a descriptive method by conducting a diagonal survey of 20 samples of cayenne pepper that were attacked by T. parvispinus. Observations were made by observing 10 leaves and 10 flowers of cayenne pepper plants. The results showed that the abundance of T. parvispinus in the vegetative and generative phases fluctuated where the highest population of T. parvispinus occurred in plants aged 10 week after transplanting with an average population of 15.8 individuals per plant then decreased in plants aged 11 WAT with an average population 9.75 individuals. The results showed that there were two types of predators that preyed on T. parvisvinus, namely Chrysoperla carnea with an average population of 23.3 and Coccinela transversalis with an average of 22.4 individuals. Laboratory reseach showed that the type of parasitoid that emerged from the 100 nymphs that were caught was Ceranisus spp with an average population of 10.2 individuals.
Pembentukan Mutan Hipovirulen Fusarium oxysporum f.sp cubense Penyebab Layu pada Tanaman Pisang (Musa paradisiaca L.) Menggunakan Asam Nitrat Fransen Sinaga; Made Sritamin; I Ketut Suada
Nandur Vol 1 No 1 (2021)
Publisher : Fakultas Pertanian, Universitas Udayana

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The Formation of Fusarium oxysporum f.sp. cubense Hypovirulent Mutant Causes Wilt in Banana Plants (Musa Paradisiaca L.) Using Nitric Acid. Fusarium wilt disease is a type of disease that can cause a quantitative decrease in banana plant production. Fusarium wilt disease is classified as a disease that is difficult to control, because it is underground and forms chlamydospores. Control of Fusarium with biological agents has a positive impact on the environment, one way of biological control using antagonistic microorganisms. Biological agents used are biological agents that are hypovirulent. Hypovirulent properties will compete with host pathogens in competition for space, food, and toxin excretion, thereby suppressing fusarium fungi to enter the vascular tissue of banana plants. Chemical mutagens are mutagenic agents that can cause permanent changes in the composition of DNA. Nitric acid can cause DNA cross-linking in the same strands. Nitric acid was reported as a suitable mutagen to increase the production of lactic acid Lactobacillus delbrueckii. Nitric acid can change the acid-base pair of organisms so that mutations occur. obtained a mutant that is hypovirulent which can suppress the growth of fusarium fungus as a pathogen in banana plants. The results showed that the FOC fungus isolates with 1% treatment had hypovirulent properties compared to 0.05%, 0.1% and 0.5% treatments. Hypovirulent properties are derived from the timing of symptoms. In mutant FOC, 1% of symptoms appeared on day 6. The growth of hypovirulent mutants was expected to be higher than that of pathogenic FOCs. Based on the research, it was found that the fungi had the lowest pathogenicity level, as well as high diameter growth, total spore density, and high amount of inhibition.
Penggunaan Citra Sentinel 2A untuk Analisis Kemampuan Ruang Terbuka Hijau Dalam Menyerap Emisi Karbondioksida di Kota Denpasar Nanda Marpaung; I Wayan Nuarsa; I Wayan Diara
Nandur Vol 2 No 3 (2022)
Publisher : Fakultas Pertanian, Universitas Udayana

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Denpasar City is a city that has the smallest percentage of area with the largest population on the island of Bali. Green open space in Denpasar City is estimated not to be able to accommodate the total carbon dioxide emissions generated by the population's energy consumption activities. The purpose of the study was to obtain the total area of green open space, total carbon dioxide emissions, and the ability of green open space to absorb carbon dioxide produced in Denpasar City. This research uses image analysis method and Tier-1 emission calculation method. The stages of the research include: literature study, data collection, sampling and analysis of the data that has been obtained. The results showed that the area of green open space in Denpasar City in 2016 was 3,615.14 ha and 3,031.45 ha in 2021. Total carbon dioxide emissions in Denpasar City were 1,021,061,707 tons/year in 2016 and 1,004,122,692. tons/year in 2021 based on the total consumption of electrical energy, premium fuel and diesel, and liquefied gas. The available green space capability in Denpasar City in 2016 is 210,609.38 tons/year/ha, and in 2021 it will be 176,605 tons/year/ha. The results of this study are expected to be used by the Denpasar city government as a study and reference in making policies related to the area of green open space and controlling carbon dioxide emissions.
Keragaman dan Kelimpahan Populasi Liriomyza spp. (Diptera: Agromyzidae) dan Parasitoidnya pada Tanaman Solanaceae di Provinsi Bali I Putu Arya Wijaya; I Nyoman Wijaya; Ni Nengah Darmiati
Nandur Vol 2 No 3 (2022)
Publisher : Fakultas Pertanian, Universitas Udayana

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Leaf miner or Liriomyza spp. is one of the pests that attack Solanaceae plants in Bali by damaging the leaves of the plant. This study entitled Population Diversity and Abundance of Liriomyza spp. (Diptera: Agromyzidae) and its Parasitoids in Solanaceae Plants in Bali Province. Aims to determine the community structure of Liriomyza spp. and the degree of parasitization associated with Liriomyza spp. This research was conducted in all District/City in the Province of Bali where there are Solanaceae plants. Research using purposive method in planting samples taken as many as 5 (points) in each District/City in Bali, at an altitude of 0-1400 masl. Sampling was done by taking the leaves of plants that showed early symptoms of Liriomyza spp. The results showed that there were 5 (five) species of Liriomyza spp. found in the field, namely Liriomyza brassicae, Liriomyza sativa, Liriomyza huidobrensis, Liriomyza trifolii and Liriomyza chinensis and found 7 (seven) species of parasitoids namely Opius chromatomyaie., Hemiptarsenus varicornis, Neochrysocharis okazakii, N. formosa, Opius dissitus, Pnigalio sp, and Clostrocerus sp. the community structure and parasitoid parasitization level have index values. abundance, diversity and dominance that vary on the plant Solanaceae in each District/City in Bali.
Analisis Spasial Faktor Penyebab Terjadinya Banjir Genangan di Kecamatan Buleleng I Kadek Budi Sastrawan; I Wayan Sandi Adnyana; R. Suyarto
Nandur Vol 2 No 3 (2022)
Publisher : Fakultas Pertanian, Universitas Udayana

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Buleleng Subdistrict is one of the sub-districts in Buleleng Regency that has experienced land use changes that have resulted in reduced water catchment areas, so they are vulnerable to flooding. Therefore, it is necessary to study floods in the Buleleng District. The study aimed to determine the distribution of potential flood areas and analyze the potential for flooding in the space utilization area in Buleleng District. This research was carried out in Kecataman Buleleng from September to December 2021. The scoring method refers to the Bali Provincial Bappeda and PPLH Unud (2006) and overlays from rainfall maps, land use, slope slopes, place height, river distance, and soil type. Factors causing flooding in Buleleng District include flat to gentle slopes, altitude 0-50 m above sea level, distance from river 0-5 m, and relatively high rainfall. The land use of the Buleleng sub-district is dominated by a residential area of 1,892.27 ha (40.90%). The average rainfall that dominates the research area is 1,500-2,000 mm/year, with the moderately wet category occurring almost evenly in the study area of 3,722.56 ha (80.46%). The distribution of sloping slopes (>8-15%) dominates the research area, which is spread over an area of 2,633.04 ha (56.91%) with a land height ranging from 10-50 m to an area of 1,692.62 ha (36.58%). The distance of the river that will provide inundation of river water dominates the research area with a very high category at a distance of 0-50 m 1,160.64 ha (25.09%). Based on the study results, countermeasures can be suggested for areas with the characteristics of potential flooding based on the spatial data of this study. Such as repairing drainage channels before the rainy season, making biopore, and increasing green area space by planting reforestation plants on vacant land to improve soil structure need government attention and public awareness.

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