Buku ini merupakan bagian dari tiga seri buku Kimia Organik yang penulis susun; yaitu Kimia Organik I jilid 1, Kimia Organik I jilid 2, dan Kimia Organik II. Dengan diterbitkannya buku ini diharapkan dapat membantu mahasiswa farmasi dalam mempelajari kimia organik. Sebab, keberhasilan bukan hanya ditentukan bagaimana cara mengajar.
UJI AKTIVITAS DAN IDENTIFIKASI JAMUR RHIZOSFER PADA TANAH PERAKARAN TANAMAN PISANG (Musa paradisiaca) TERHADAP JAMUR FUSARIUM(1) Universitas Medan Area (2) Universitas Medan Area (*) Corresponding Author Abstract
The main cause of decline in banana production is fusarium wilt caused by the fungus Fusarium oxysporum f.sp.cubense (Foc). This disease is systemic, it is very dangerous because it can kill plants. Fusarium wilt disease ranks first in the list of diseases of bananas in Indonesia, fusarium wilt very difficult to control because it has not found a commercial banana cultivars resistant. Integrated Pest Management (Biological Control) using biological agents, one of which is the rhizosphere that has the ability to suppress the growth of Fusarium wilt (Fusarium oxysporumf.sp.cubense) in vitro. The purpose of this study was to determine the ability of an antagonist of the rhizosphere fungus to fungus fusarium. This research method is a rhizosphere fungal activity test against fusarium fungus. The results showed that 12 isolates the rhizosphere has the potential to inhibit the growth of fungi fusarium the percentage inhibition ie 82% of isolates A1, B2 D3 by 83% and 80%, A2 isolates the isolates that produce inhibition of the smallest amounting to 15%. Based on identification consists of rhizosphere fungi genus Trichoderma sp., Aspergillus sp., And Penicillium sp.
Keywords
Rizhosfer fungus, Fusarium oxysporum, Banana (Musa paradisiaca)
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This work is licensed under a Creative Commons Attribution 4.0 International License Dipole Magnetization Effect to Kerosene CharacteristicsMochamad Chalid 1 , Nelson Saksono 1 , Adiwar Adiwar 1 , Nono Darsono 1Affiliations:
Abstract: Investigation of kerosene characteristics has been done by ex-situ dipole magnetization. The results show that magnetization technique can be able to influence kerosene characteristics. Polarity and viscosity of the kerosene are observed by measuring refractive index and viscosity. An hour of 4330 Gauss flux magnetic will increase refractive index from 1.447 to 1.449 and decrease the viscosity from 1.278 to 1.256. Those changing support de-clustering occurrence and polarity increment of kerosene molecule. Gas chromatography and infrared result show that those changing do not alter kerosene structure and composition.
Keywords: dipole magnetization, polarity, viscosity, de-clustering
DOI:
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