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Agrotrop : Journal on Agriculture Science
Published by Universitas Udayana
ISSN : 2088155X     EISSN : 26544008     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Journal AGROTROP
Arjuna Subject : -
Articles 400 Documents
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Produksi Benih Cabai Rawit (Capsicum frutescens L.) Bebas TMV(Tobacco mosaic virus) Melalui Dry Heat Treatment I KETUT SIADI; I GUSTI NGURAH RAKA; I GUSTI NGURAH WISNU PURWADI
Agrotrop : Journal on Agriculture Science Vol 2 No 1 (2012)
Publisher : Fakultas Pertanian Universitas Udayana

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Abstract

The study was done in Denpasar, Bali under greenhouse condition as well as in the field. The objective of the research is to know the effectiveness of dry heat treatment to inactivate TMV which was contaminated chili pepper seeds, and to improves the seeds quality. The seeds which were dry heated under 40ºC for 24 hours and hereinafter 70ºC for 72 hours showed to have no different viability with those of non treated seeds. These indicated that dry heat treatment does not affect to germination of chili pepper seeds. The dry heat treated chili pepper seeds (DHS), non treated ones (NT), and manually TMV-contaminated DHS (DHS+TMV) were planted under field condition. Verification of TMV infection in the 90 days old chili pepper plants by enzyme-linked immunoassay revealed that the rate of TMV infection were 57.89%, 12.5% and 100% for NT, DHS and DHS+TMV. These results indicated that the TMV source was abundance in the field. Infection of TMV in the chili pepper plants given much effect on the plant height, branch number and production. These research results suggest a possibility of using dry heat.
Aplikasi Ekstrak Hasil Fermentasi Biji Jagung dan Rebung untuk Meningkatkan Mutu Buah Anggur Bali (Vitis vinifera L. var. Alphonso Lavallee) I NYOMAN GEDE ASTAWA; RINDANG DWIYANI; NI NYOMAN ARI MAYADEWI; I MADE SUKEWIJAYA
Agrotrop : Journal on Agriculture Science Vol 6 No 2 (2016)
Publisher : Fakultas Pertanian Universitas Udayana

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Abstract

Applications of Extracts of Fermented Immature Corn Seed and BambooSprout For Improvement of Table grape Quality of Vitis vinifera L. var.Alphonso Lavallee. The objective of the research was to determine the effect ofapplication of extracts of fermented immature corn seed and bamboo sprout for improvementof table grape quality. The research was designed as Completely Randomized Block Design,with five treatments and ten replications. The treatments were K0 (control), J50 (extract offermented immature seed of corn with concentration of 50%)), J100 (extract of fermentedimmature seed of corn with concentration of 100%), R50 (extract of fermented bamboo sproutwith concentration of 50%) and R100 (extract of fermented bamboo sprout with concentrationof 100%). The results showed that all of the treatments improved sugar content of the fruit.However, the treatment of J100 resulted in the greatest increase of berry number per-bunchand the lowest number of seed per-berry. In conclusion, for improvement of the table grapequality, the treatment of J100 was the most appropriate among other treatments used in thecurrent research.
Kajian Fisiko-Kimia Buah Jeruk Siam (Citrus nobilis Lour.) pada Perbedaan Tingkat Kematangan Selama Penyimpanan NI PUTU ARYANTI; COKORDA GEDE ALIT SEMARAJAYA; I MADE SUKEWIJAYA; I NYOMAN RAI
Agrotrop : Journal on Agriculture Science Vol 7 No 1 (2017)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (226.794 KB) | DOI: 10.24843/AJoAS.2017.v07.i01.p06

Abstract

Physico-Chemical Studies of Tangerine (Citrus nobilis Lour.) on the Differences Level of Maturity Fruits during the Storage Period. Tangerine (Citrus nobilis Lour.) is one of the citrus variety developed in Bali because of the high production and preferred by consumers. In Bali, the center of citrus fruit development is in Kerta village, district of Payangan, Gianyar since 2003. The randomized block design with a single factor was used, with 4 treatments of fruit maturity level and 6 replications. The purpose of this study to determine the level of maturity of citrus fruit based on proper skin color of the fruit to be harvested and to determine the effect of maturity based on the skin color of the fruit, the physico-chemical changes of citrus fruit during storage. The harvest stage of the treatment were 217 days after dormancy (Tk1), 231 days after dormancy (Tk2), 245 days after dormancy (Tk3), and 255 days after dormancy (Tk4). The results showed that the highest shrink in diameter was 0,58cm (Tk1) whereas, the highest weight loss subjectly 19,98% (Tk4) and subjectly towards to the highest water content loss, but also subjectly with lowest levels of vitamin C reduction to 11.87% and the highest of total soluble solit (TSS) increase to 3.29 (oBrix). The indicators preferred by the panelist were neutral according to color, flavour, taste and overall appearance. The good storability for citrus at Tk2 with low damage.
Pengaruh Pemberian Ekstrak Pisang pada Media VW terhadap Induksi Akar dan Pertumbuhan Tunas Dendrobium lasianthera J.J.Sm EDY SETITI WIDA UTAMI; SUCIPTO HARIYANTO; Y. SRI WULAN MANUHARA
Agrotrop : Journal on Agriculture Science Vol 6 No 1 (2016)
Publisher : Fakultas Pertanian Universitas Udayana

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Abstract

The Effect of Banana Extract at The VW Media on Root Induction and Growth of ShootDendrobium Lasianthera J.J.Sm. Orchid has economic potential as a non-oil exportcommodities which can increase foreign exchange. In addition to supporting industry as cutflowers and potted plants, Dendrobium orchid in particular has been widely recognized as atraditional medicine. Orchids can be propagated in vitro using seed. The main problem in thepropagation of orchid through seed culture is difficulty in root formation. In this study, weevaluated the effect of organic compounds of the banana extract at Vacin and Went mediumcontaining peptone 2 gL-1 to induce growth of root and shoot of the Dendrobium lasianthera.The shoot measuring about 0.3-1.0 cm contain of 1-2 leaves obtained from the seedgermination was cultured on VW medium containing 2 gL-1 peptone additives with 50 gL-1,100 gL-1 and 150 gL-1 banana extract, and without banana extract was used as control. After16 weeks of culture, number of roots, number of leaves, root length, leaf length, the shootheight, root and leaf widest diameters were recorded. Data were statistically analyzed usingANOVA and continued by honestly significance difference (HSD). The results showed thatthe extract of banana statistically gave a significant effect on root induction and growth ofshoot D. lasianthera.
Peningkatan Produktivitas Tanaman Padi Sawah Melalui Pemupukan Kompos dan NPK I GUSTI PUTU RATNA ADI; I NYOMAN PUJA
Agrotrop : Journal on Agriculture Science Vol 9 No 2 (2019)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (184.938 KB) | DOI: 10.24843/AJoAS.2019.v09.i02.p08

Abstract

Increased Rice Crop Productivity Through Compost and NPK Fertilization. The aims of this research was to study response of compost and NPK fertilizers to the soil chemical properties and rice yield. The method used was a factorial Randomized Block Design consisting of two factors. The first factor was compost Fertilizer (B) consists of 2 levels, namely: B0 = Without compost fertilizer and B1 = 5 ton compost fertilizer ha-1. The second factors was NPK national recomendation (P) consists of 3 levels, namely: P1 = 50% of NPK recommendation, P2 = 100% of NPK recommendation and P3 = 150% of NPK recommendation. The results showed that the treatment of compost and NPK fertilizers gave no significant effect on tillers number clumb-1 and dry straw weight/m2 , but gave a significant effect on N, P, K and dry grain weight/m2. The combination of 5 tons of compost/ha and 150% of NPK recommendation can produce N-total, P-available level, K-available and dry grain weight per m2 respectively 0.35%, 13.79 ppm, 355, 21 ppm and 0.96 kg and significantly higher than the combination of 50% NPK recommendation and without compost, which were 0.26%, 8.21 ppm, 236.10 ppm and 0.69 kg respectively.
Struktur Komunitas Hama Pemakan Daun Kubis dan Investigasi Musuh Alaminya KETUT AYU YULIADHI; PUTU SUDIARTA
Agrotrop : Journal on Agriculture Science Vol 2 No 2 (2012)
Publisher : Fakultas Pertanian Universitas Udayana

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Abstract

The data concerning the community of pests that eat and destroy cabbage leaves in Bali has notbeen available yet. However, it is required for the pest control purposes. The aim of the research wasto investigate the structure of pest community that eat and destroy cabbage leaves and to find out theirnatural enemies for controlling the pests. Samples of the pest were collected from the cabbage plantsthat were treated with insecticide and without insecticide (control). The results show that the phytophageinsects that found on both treatments of growing cabbages were Plutella xylostella, Crocidolomiapavonana, Spodoptera litura, Helicoverpa armigera, Chrysodiexis orichalcea, and Aphis brassicae.Natural enemies that found on that area were parasitoid larva Plutella Diadegma semiclausum andpredator Crocidolomia pavonana, Sycanus dichotomus pdf (secured).
PENGEMBANGAN KRITERIA DAN KLASIFIKASI TINGKAT DEGRADASI LAHAN PADA LAHAN KERING (STUDI KASUS: LAHAN KERING DI KABUPATEN BOGOR) BAMBANG SUSANTO
Agrotrop : Journal on Agriculture Science Vol 1 No 2 (2011)
Publisher : Fakultas Pertanian Universitas Udayana

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Abstract

Developing of Criteria and Classification of Land Degradation Level on Dryland (Case Study: Dryland in Bogor Regency. Optimization of dry land utilization including in Bogor Regency is still an important issue. One of the causes is due to land degradation. At the moment, land degradation inventory is still resulting tentative acreages, since the criterion was different among institutions. This research aims to develop criterion (classes range) and to classify land degradation in dry land on reconaissance scale. It based on variabels affecting level of degradation. Data was collected on surveys for a case study. The data then was analyzed using some techniques, for instances cluster analysis, and discriminant analysis. This research was resulting three criterions (range of classes) for five variables determining level of land degradation, there were type of bed-rock, slope, conservation (P-value), silt percentage, land use/ vegetation, Pavailable, exchange Al, and H. This research also generated three levels of degradation for reconnaissance scale, there were (1) sligtly degraded land (score <16), (2) moderately degraded land (score in between 16-39), and (3) strongly degraded land (score more than 39).
Isolasi dan Identifikasi Endomikoriza Indigenus pada Perakaran Salak di Kabupaten Karangasem dan Perbanyakannya I MADE MARTANA DIPUTRA; I NYOMAN RAI; I PUTU DHARMA
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 | Full PDF (213.651 KB) | DOI: 10.24843/AJoAS.2018.v08.i01.p07

Abstract

Isolation and Identification of Endomycorrhizal Indigenous on Salak Rhizosphere in Karangasem Regency and its Propagation. This research aimed to determine and obtain AMF indigenus isolates and their propagation at different levels of soil water content. This research used Completely Randomized Design with 2 Factors. The first factor was location of soil sampling, consisting of 3 levels of treatment (Location 1, Location 2, and Location 3) and the second factor was soil water content consisting of 3 levels of treatment (100, 70, and 40% field capacity). The results of isolation and identification indicate that there were two genus of AMF found on salak rizosphere in Karangasem Regency, those were Glomus and Gigaspora with several different species in it. The percentage of root infection rate was 100% and was categorized very high. The result of AMF spore propagation showed that combination treatment of location 1 which sandy clay soil textured and 40% field capacity produced the highest spores i.e 2382 spores or rised 2282% from 100 spores which were inoculated.
Laju Parasitasi Parasitoid Anagrus sp. dan Oligosita sp. terhadap Telur Wereng Coklat setelah Aplikasi Insektisida di Pertanaman Padi DEDE MUNAWAR; EKO HARI ISWANTO; NONO SUMARYONO; BAEHAKI SUHERLAN EFFENDI
Agrotrop : Journal on Agriculture Science Vol 5 No 2 (2015)
Publisher : Fakultas Pertanian Universitas Udayana

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Abstract

Parasitism rate of Anagrus sp. and Oligosita sp. parasitoids to brown planthopper eggs after insecticides application in the rice field. The research wascarried out in Subang District, West Java in the wet season of 2013. The experiment used arandomized block design with 7 insecticide treatments and four replications. The treatmentswere rynaxypyr, fipronil, imidakhloprid, dinotifuran, pimetrozin, and BPMC compared withcontrol. The objective of the research was measuring parasitism rate of parasitoids to brownplant hopper (BPH) eggs after insecticides application. The results showed that rynaxypyr,dinotefuran, and imidacloprid quickly reduced the BPH population only in one day afterapplication (DAA), while fipronil, pimetrozin, and BPMC were rather slow because the BPHdeclined in 10 DAA. All insecticides were give a negative effect to Anagrus sp. and Oligositasp parasitoids, but the performance of those parasitoids back to normal in 10 DAA forAnagrus sp. and in 21 DAA for Oligosita sp. The parasitism rate of all parasitoids were give anegative value in 1-10 DAA. In 21 DAA the parasitism rate of Anagrus sp. increased infipronil, BPMC and dinotefuran treatment, but the parasitism rate of Oligosita sp. were still innegative value under the control treatment.
Pengaruh Aplikasi Formula Pantoea agglomerans Terhadap Aktivitas Antioksidan dan Kandungan Klorofil Daun Tanaman Strowberi TRISNA AGUNG PHABIOLA; KHAMDAN KHALIMI
Agrotrop : Journal on Agriculture Science Vol 2 No 2 (2012)
Publisher : Fakultas Pertanian Universitas Udayana

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Abstract

The objectives of this experiment were conducted to evaluate the effectiveness of Pantoeaagglomerans formulations to increase antioxidant activities and chlorophyll content of strawberry plants.P. agglomerans was formulated in the forms of gel and powder. Measurement of peroxidase activitycarried out 7 days after application of P. agglomerans formulations on strawberry plants. The mannerin which the Cohen prosedure suggested by Simon and Rose (1970) and has been modified. Totalchlorophyll content (SPAD unit) was determined with a chlorophyll-meter SPAD-502. Some growthparameters were observed such as plant height, number of leaves, and leaf area. Results of this studyshowed that application of P. agglomerans formulations could increase the peroxidase activity. Peroxidaseactivity on treated plants increased by 47.17% to 50.16% in comparison with un-treated plants. Totalchlorophyll content on treated plants increased by 23.81% to 28.22% in comparison with un-treatedplants. These results suggested that application of P. agglomerans formulations could increase the totalchlorophyll content and antioxidant activity of strawberry plants.

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