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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 15 Documents
 1   2 
Search results for , issue "Vol 6 No 2 (2016)" : 15 Documents clear
Uji Daya Hambat Jamur Endofit dan Eksofit dalam Menekan Pertumbuhan Fusarium oxysporum f.sp. vanillae Penyebab Busuk Batang Panili Secara In Vitro NI WAYAN SUNITI; I MADE SUDARMA
Agrotrop : Journal on Agriculture Science Vol 6 No 2 (2016)
Publisher : Fakultas Pertanian Universitas Udayana

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Abstract

Study on In Vitro Inhibitory Ability of Endophytic and Exophytic Fungusin Suppressing the Growth of Fusarium oxysporum f.sp. vanillae thatCauses Stem Rot of Vanilla. Vanilla stem rot disease caused by Fusarium oxysporumf.sp. vanillae , is still a very dangerous disease and feared by vanilla farmers. Disease until thepresent time there does not yet appear adequate control strategies for the disease. On the basisof these problems interested studied the use of endophytic fungi and exophytic existing on theleaves and stems of healthy plants , which have potential as a biological agent to controlpathogens . The study was conducted in three stages: (1 ) isolation of the pathogen and fungalendophyte and exophytic, (2) identification of pathogenic microscopic morphology, fungalendophyte and exophytic, and (3) test the inhibition of fungal endophyte and exophyticagainst pathogens. Fungi are found as the leaves are Aspergillus niger and Rhizopus spp., Onexophytic on the trunk is Trichoderma sp . and Fusarium spp., as a leaf endophytic found A.niger and Neurospora spp. and as endophytic rod is Neurospora spp . The highest prevalenceachieved by Neurospora spp . which is equal to 100 % on endophyte stem, while Rhizopusspp., and Fusarium spp. by 90 % respectively, exophytic on the leaves and stems. The testresults found that the inhibition of leaf eksofit Rhisopus spp . give up inhibition ranged from70.37±3.2% - 100% , while A. niger amounted to 72.22% . In exophytic on rod found onlyTrichoderma sp. inhibit pathogens by 73.70±3.57%. In endophytic on leaf found A. niger at70.37±3.2% , while Neorospora spp. ranging from 79.11±3.21% - 88.50±2.10%. In theendophytic on trunk was found Neurosporas spp. amounting to 70.74±3.57% - 79.26±1.28%.
Beberapa Sifat Biologi Tanah Kebun Jeruk Siam (Citrus nobilis Tan) pada Sistem Monokultur dan Tumpangsari dengan Beberapa Tanaman Sayuran di Desa Sekaan Kecamatan Kintamani I WAYAN BUNADA; ANAK AGUNG ISTRI KESUMADEWI; I WAYAN DANA ATMAJA
Agrotrop : Journal on Agriculture Science Vol 6 No 2 (2016)
Publisher : Fakultas Pertanian Universitas Udayana

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Abstract

Some Biological Soil Properties of Orange Orchard (Citrus nobilis Tan)under Monoculture and Intercropping System with some Vegetable Cropsin Sekaan Village of Kintamani Districts. Orange fruit is of economically importantcommodity in Bali. The fruits mostly produced in Bangli Regency including KintamaniDistrict under intensified monoculture and intercropping with vegetable crops. Those systemspredicted contribute to variation of soil biological properties as the results of differences inmagnitude of agrochemicals that being used. A research about soil biological properties oforange orchard land was conducted in Sekaan Village of Kintamani on November 2015 -March 2016. The purpose of the study was to differenciate the soil biological propertiesamong the common cropping pattern applied in the study area, namely: monoculture oforange, and either intercropping of orange with cabbage (Brassica oleracea), tomatoes(Solanum lycopersicum), chilli (Capsicum annum L.), or cucumber (Cucumis sativus). Threereplications of rhizosperic soil samples were collected from each planting systems andproceed for selected soil analysis. The measured parameters were soil pH, organic-C, as wellas the respective total population number of soil microorganisms, fungi, Gram (+) and Gram(-) bacteria, and also soil respiration. The results showed that total population number of soilmicroorganisms and total fungi were significantly higher on intercropping compare tomonoculture systems. No significant different of those present among soils that cultivatedwith different vegetable crops. In contrary, no differences were also observed for both soilrespiration value and total number of G (+) and G (-) bacteria among soils differing incropping pattern.
Evaluasi Sifat Ovisidal dan Nimfasidal Insektisida Buprofezin 100 g/l terhadap Telur dan Nimfa Wereng Coklat, Nilaparvata lugens (Stal.) (Hemiptera: Delphacidae) BAEHAKI SUHERLAN EFFENDI; EKO HARI ISWANTO; AMIR HAMZAH
Agrotrop : Journal on Agriculture Science Vol 6 No 2 (2016)
Publisher : Fakultas Pertanian Universitas Udayana

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Abstract

Evaluation of ovicidal and nymphcidal properties of buprofezin 100 g/linsecticide to eggs and nymphs of brown planthopper, Nilaparvata lugens(Stal.) (Hemiptera: Delphacidae). Research was carried out in screen house ofSukamandi, Indonesian Center for Rice Research (ICRR) in the wet season of 2013. Theresearch used randomized block design with 5 doses levels insecticide treatment of buprofezin100 g/l and four replications. The buprofezin treatments were 250, 500, 750, 1000, and 1500ml/ha compared with control without insecticide. The objective of the research to evaluate ofovicidal and nymphcidal of buprofezin to brown planthopper (BPH). The results showed thatthe ovicidal properties of buprofezin 100 g/l with a range doses of treatments to BPH eggsthat application at 5 days after inoculation with eggs remains in the plant tissue were 39,79-94,88%. The raising ovicidal of buprofezin were 74,84-99,5% that applied at 9 days afterinoculation with eggs remains in the plant tissue. In the other hand the ovicidal properties ofbuprofezin decreased dramatically were 20-48% that applied at 5 days after inoculation andthen BPH eggs removed from plant tissue (dissected) at 9 days after inoculation. The higherovicidal properties of buprofezin is better in the plant tissue than in the dissected eggs treated,because buprofezin working on eggs in plant tissue as a systemic insecticide. The dissectedBPH eggs of rice treated to show the normal eggs shape and no eggs contracted. Theunhatched eggs of buprofezin treatments were milk white due to insecticide effect, sometranslucent color with a red dot as a fertile eggs or without a red dot as unfertile eggs.Buprofezin was the excellent nymphcidal insecticide with the value of the efficacy to BPHnymphs were very high about 87,44 -100% for a range doses treatments. Buprofezin did notresurgence effect, moreover this insecticides still have ovicidal and nimphcidal properties as abasic to reduce offspring of brown planthopper.
Editorial Agrotrop Vol. 6, No. 2, Nopember 2016 Jurnal AGROTROP
Agrotrop : Journal on Agriculture Science Vol 6 No 2 (2016)
Publisher : Fakultas Pertanian Universitas Udayana

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Abstract

Editorial Agrotrop Vol. 6, No. 2, Nopember 2016
Identifikasi dan Karakterisasi Sumber Daya Genetik Tanaman Buah-Buahan Lokal di Kabupaten Tabanan I KETUT ADE SUJANA; I MADE SUKEWIJAYA; I WAYAN WIRAATMAJA
Agrotrop : Journal on Agriculture Science Vol 6 No 2 (2016)
Publisher : Fakultas Pertanian Universitas Udayana

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Abstract

Identification and Characterization of Genetic Resources of Local Fruits inTabanan. The fruit is a source of vitamins and minerals that ensure the metabolic processesin the human body, some of which can also be used as medicines, cosmetics, SPA (massage)social and culture as a means to use for the material of offerings. Tabanan regency, as well asother areas in Bali has a variety of fruit but the resources still underutilized. This researchaims to identify the type of fruit genetic resources in Tabanan, profile the genetic resourcesregarding the morphology of fruit and agronomic characters, as well as to compile thegeographical spread map and diversity of fruits. Identification and characterization as well asthe distribution map is very important for the conservation, development and utilization ofgenetic resources in Tabanan Regency. The results of the research conducted in Tabanan,found 31 type and 52 subtype local fruit, with 6 different types of eminent fruit, 15 kinds ofrare fruits, 12 kinds of fruit that usually use for upakara and 4 types of fruits that are use asmedicine. Based on the results of the survey conducted in tabanan then it can be possible tocomposed 34 geographical local fruit spread map.

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