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Ade Syahputra
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Etil Format sebagai Perlakuan Alternatif terhadap Colletotrichum gloeosporioides pada Stroberi Ade Syahputra; Nurul Dwi Handayani; Indriani Kusumawati Daud Malvini
Jurnal Fitopatologi Indonesia Vol 8 No 6 (2012)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (616.022 KB) | DOI: 10.14692/jfi.8.6.177

Abstract

Ethyl formate (EtF) is alternative fumigant to substitute methyl bromide. The objective of the current study was to obtain an effective dose and exposure time of Etf treatment against Colletotrichum gloeosporioides in strawberry. In vitro test was conducted on colonies of C. gloeosporioides grew on PDA in petri dishes. The fungus was fumigated with Etf at various dose (0, 140, 190, 240, and 290 g m-3) and at various exposure time (1, 2, 3, and 4 hours), in 5 L plastic bags. On in vivo test, agar plugs of C. gloeosporioides (diameter 0,3 mm) were inoculated on to wounded strawberries, and the inoculated strawberries were then fumigated with Etf at similar dose and exposure time treatments. Each test was conducted in four replicates. Fumigation with Etf at 190 g m-3 significantly reduced the growth of C. gloeosporioides on agar, but did not reduce the colonization of the pathogen on strawberries. Ethyl formate did not affect visual quality of strawberries, but damaged the calyx at 190 g m-3. Other fungi, namely Colletotrichum sp. and Botrytis sp., were found on fumigated and nonfumigated strawberries.  Key words: Colletotrichum gloeosporioides, ethyl formate, strawberries 
Pengaruh iradiasi sinar gamma terhadap fertilitas Sternochetus frigidus (Fabricius) (Coleoptera: Curculionidae) pada mangga kuini Ade Syahputra; Mustopha Ahad; Abdurakhman Abdurakhman; Joni Hidayat; Djoko Prijono; Indah Arastuti Nasution
Jurnal Entomologi Indonesia Vol 17 No 1 (2020): Maret
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (649.658 KB) | DOI: 10.5994/jei.17.1.11

Abstract

One of the recognized and safe quarantine treatments for consumers is the use of gamma-ray irradiation [60Co] at a recommended dose requested by the destination country or international agency. The purpose of this study was to test the effectiveness of a generic dose of gamma ray irradiation for sterilizing mango pulp weevil Sternochetus frigidus (Fabricius) on mangoes cv kuini (Mangifera odorata). A total of 300 kg pulp-weevil-infested mango fruits was collected from West Sumatra and Lampung. First experiment was conducted on April to irradiate fruits collected from West Sumatera and second experiment was on May to irradiate fruits collected from Lampung. In each treatment, a box containing 6-8 M. odorata fruits was irradiated with gamma-ray at doses of 50, 100, 150, 200, 300, 400 Gy with three replications. The treatment of gamma-ray irradiation could reduce feeding activity, normal life of insect, egg production and increase mortality of adults. The results of the first and second experiments showed that gamma ray irradiation was able to influence the development of pupae and adults. There were differences in the normal development of adults in the two experiments. The number of normal development of adults on first experiment was higher than on the second experiment. The irradiated pupae at dose of 100 Gy successfully develop to be adults but the adults are unable to produce eggs.  Adults irradiated at 150 Gy are still able to lay eggs with the average of 6 eggs (first experiment) and 2,3 larvae (experiment II), 150 Gy average 6 eggs and do not hatch. Doses at 200 Gy no eggs were produced.
Co-Authors Abdurakhman Abdurakhman DJOKO PRIJONO Indah Arastuti Nasution Indriani Kusumawati Daud Malvini Joni Hidayat Mustopha Ahad Nurul Dwi Handayani