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All Journal BERITA BIOLOGI
ATMOWIDJOJO, ANITA HANNA
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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RESISTENSI BEBERAPA KLON TEH (CAMELLIA SINENSIS L.) TERHADAP SERANGAN TUNGAU JINGGA (BREVIPALPUS PHOENICIS GEIJSK) ATMOWIDJOJO, ANITA HANNA
BERITA BIOLOGI Vol 3, No 1 (1985)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v3i1.1365

Abstract

ANITA HANNA ATMOWIDJOJO. 1985. Resistancy of some tea (Camellia sinensis L.) clones to scarlet mites (Brevipalpus phoenicis Geijsk). Berita Biologi 3 (1) : 1-4. Scarlet mite (Brevipalpus phoenicis Geijsk) is an important pest of tea culture in Indonesia. Several means can be used to control this pest such as the use of pesticides, biological control, and the use of tea resistant clones.The last mentioned method is considered to be the best and the most effective.Most of the tea estates in Indonesia nowadays use clones as new planting materials and their resistance to scarlet mite is known to vary.In the present study, sixteen clones were compared for their resistance.The results showed that clones PS 324 and TRI 2024 were the most resistant to scarlet mite nfestations.
KOMUNITAS SERANGGA AIR DI SUNGAI HUTAN KETAMBE, TAMAN NASIONAL GUNUNG LEUSER, ACEH. WIRJOATMODJO, S.; ATMOWIDJOJO, ANITA HANNA
BERITA BIOLOGI Vol 3, No 3 (1985)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v3i3.1354

Abstract

S. WIRJOATMODJO & ANITA HANNA ATMOWIDJOJO. 1985. Insect community of stream ecosystem of Ketambe forest, Gunung Leuser National Park, Aceh, Berita Biologi 3.(3) : 111 -115.Non-strictly seasonal study on the insect community of stream ecosystem at Ketambe forest, Gunung Leuser National Park,Aceh was undertaken from September 1980 to February 1983,with the aim of providing base line data of the local stream ecosystem. Thirty two species of benthic insects were recorded from the depth between 5--30 cm.They belong to the orders of Diptera, Odonata, Kphemeroptera, Coleoptera, Plecoptera, Hemiptera, Megaloptera and Trichoptera. The number of species found was higher during the beginning of the dry than that of the rainy season (96,9% vs 59,4% of the total). Diptera and Odonata showed the highest number of species (8) among the orders, whereas Trichoptera was the lowest (one species). However, in term of frequency of occurence and abundance, the Trichoptera species, Hydropsyche sp,, was the highest, followed by Neoperla sp. (Flecoptera). There was a tendency of seasonal fluctuation in species number and life cycle in several species. Bottom structures containing pebbles, boulders of various sizes and leaf litter for shelter and feeding site, appeared to be the best habitat. Species composition or number varied with stations. However, diversity indexes among stations were more or less similar, and all of them were low.
Co-Authors WIRJOATMODJO, S.