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Husni Husni
Prodi Agroteknologi Fakultas Pertanian Universitas Syiah Kuala Darussalam Banda Aceh
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PENGARUH SUPERPARASITISME TERHADAP PERKEMBANGAN PROGENI PARASITOID Tetrastichus brontispae Ferriere Husni Husni; Jauharlina, Jauharlina,; Amru Al Haraqal
Jurnal Floratek Vol 6, No 1 (2011)
Publisher : Program Studi Agroteknologi, Fakultas Pertanian, Universitas Syiah Kuala

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Abstract

            The purpose of this research was to investigate effects of superparasitism rate on development of Tetrastichus brontispae progeny. In this research, each host (Brontispa longissima pupa) was exposed for different frequencies, i.e., 1, 3, 5, 7 and 9 times for female parasitoid.  The result showed that the rate of superparasitism affected the number of progeny emergence, the developmental time of immature progeny, and sex ratio of progeny. The number of progeny emergence was increased as the increase of  superparasitism rate. The number of progeny emergence from single oviposition host was 15, while from host exposed on female parasitoid for 3, 5, 7, and 9 times were 12, 5, 2 and 0, respectively. The developmental time of immature progeny was lengthened as the increase of superparasitism rate. Sex ratio of progeny was biased to female progeny as the increase of rate of superparasitism. The result of this research indicated that superparasitism gave negative effect on development of T. brontispae progeny.
PENGARUH EKSTRAK RIMPANG JERINGAU (Acorus calamus L.) TERHADAP MORTALITAS ULAT GRAYAK Spodoptera litura F. Hasnah Hasnah; Husni Husni; Ade Fardhisa
Jurnal Floratek Vol 7, No 2 (2012)
Publisher : Program Studi Agroteknologi, Fakultas Pertanian, Universitas Syiah Kuala

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Abstract

The purpose of this study was to obtain an effective concentration of the extract of sweet flag rhizome in controlling S. litura. This research was conducted at Laboratory of Plant Pests and Diseases, Agriculture Faculty, Syiah Kuala University, Banda Aceh. This research used a Completely Randomized Design (CRD) non-factorial, with six levels of extract concentrations, that is 0%, 3%, 6%, 9%, 12%, and 15%. Each treatment was repeated four times. The variables measured were mortality of larvae, percentage of formed pupae, percentage of emerging imago, and life length of imago. The results showed that application of the sweet flag rhizome extract affected mortality of larvae, formed pupae, emerging imago, and life length of imago S. litura. Use of sweet flag rhizome extract with a concentration of 3% was effective in controlling S. litura. Application of sweet flag rhizome extract with a concentration of 3% resulted in larval mortality up to 57.50%, formation of pupa only 20%, emerging imago 5%, and average life length of imago S. litura 1.25 days.
Co-Authors Ade Fardhisa Amru Al Haraqal Hasnah Hasnah Jauharlina Jauharlina