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Preferensi Parasitoid Trichogrammatoidea spp. yang Memarasit Telur Penggerek Buah Merah Jambu Pectinophora gossypiella Saunders (Lepidoptera; Gelechiidae) terhadap Beberapa Inang Dwi Adi Sunarto; Nurindah Nurindah; Sujak Sujak
Jurnal Perlindungan Tanaman Indonesia Vol 11, No 1 (2005)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.12114

Abstract

Pink bollwonn Pectinophora gossypiella Saunders (Lepidoptera: Gelechiidae), is one of the key pests of cotton. Exploration of its egg parasitoids in East Java, yields Trichogrammatoidea spp. The research objective are to study host acceptance of the parasitoids to several levels of host age and host species for a consideration of selection in using the parasitoids as candidates of biocontrol agent of pink bollworm. The study was carried out in Biocontrol Laboratory of Indonesian Tobacco and Fiber Crops Research Institute (IToFCRI) from April to December 2002 with laboratory condition (T: 25 - 27°C; RH: 65-70%). The treatments consist of combinations of the parasitoid origin (Trichogrammatoidea sp A and Trichogrammatoidea sp L); host species (eggs of Corcyra cephalonica, P. gossypiella, and Helicoverpa armigera) and host ages (1, 2 and 3 days). The number of replicates is 10. Preference level was assessed by using continuous observation method. Trichogrammatoidea sp A is most preferred to P. gossypiella eggs, significantly different with that of C. cephalonica and H. armigera eggs. Host preference of Trichogrammatoidea sp L to P. gossypiella and C. cephalonica eggs is not significantly different and higher than that of H. armigera eggs. Both parasitoid species have no different preference to P. gossypiella and H. armigera eggs, however, Trichogrammatoidea sp L has a higher preference to C. cephalonica eggs than Trichogrammatoidea sp A. Host preference of both species was not affected by the age of all three species of host eggs.
Peran insektisida botani ekstrak biji mimba untuk konservasi musuh alami dalam pengelolaan serangga hama kapas. Dwi Adi Sunarto; nurindah nurindah
Jurnal Entomologi Indonesia Vol 6 No 1 (2009): April
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (193.584 KB) | DOI: 10.5994/jei.6.1.42

Abstract

Natural Enemies Conservation: The Role of Neem-seed Extracts for Natural Enemies Conservation Used of Cotton Insect Pest Control. Insects associated with cotton plant are numerous, as the plant bears extrafloral nectar. More than 90 species of natural enemies are reported and identified. They could manage the cotton pest, keeping the pest population is under action threshold level when their presence is considered in scouting and action threshold concept. However, most of cotton farmers are insecticide-spray-minded people who think that insecticide sprays is a must in cotton cultivation. This behavior is unfavorable for the natural enemies in building their population so they can act as an effective mortality factor for the pest. Neem seed extract (NSE) is toxic to herbivores but relatively safe for natural enemies, so that it could be used as a substitute for synthetic chemical insecticides. Therefore, NSE is recommended to be used for conserving natural enemies in cotton agro ecosystem.
Keanekaragaman spesies parasitoid telur Helicoverpa armigera (Hübner) pada sistem tanam monokultur dan polikultur kapas nurindah nurindah; Sujak Sujak
Jurnal Entomologi Indonesia Vol 3 No 2 (2006): September
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (216.71 KB) | DOI: 10.5994/jei.3.2.84

Abstract

Polyculture system is one of techniques in pest management. In Indonesia, cotton is always intercropped with second food crops such as maize, soybean, mungbean or peanut. This research was aimed to evaluate the effect of culture system, i.e. cotton monoculture vs. cotton intercropped with soybean on the increase of species diversity of H. armigera egg parasitoids and the parasitoid contribution to mortality of H. armigera. The research was arranged in a split plot design with two main factors: three cotton varieties with three levels of trichome density (Tamcot SP 37, Kanesia 8 and LRA 5166) and the subplots were two cultivation systems (cotton monoculture and polyculture), with three replicates. Observations were made by collecting H. armigera eggs on population of first generation (45 days after planting) and second generation (75 DAP). The results showed that on cotton polyculture the egg parasitoid complex which consisted of Trichogramma spp. and Trichogrammatoidea spp. was higher than that in cotton monoculture and so was the egg parasitism level. The increase of egg parasitism was 24% in the first generation and 15% in the second generation. Parasitoid species found belonged to the genera Trichogramma and Trichogrammatoidea. In the parasitoid complex, Trichogrammatoidea armigera was dominant on the first generation and Trichogramma chilotraeae on the second. The domination succession could be as a result of the higher host-searching capacity of T. chilotraeae than that of T. armigera.
Eksplorasi dan uji keragaan parasitoid penggerek buah kapas Pectinophora gossypiella Saunders (Lepidoptera: Gelechidae) nurindah nurindah; Dwi Adi Sunarto; Sujak Sujak
Jurnal Entomologi Indonesia Vol 1 No 1 (2004): September
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1221.996 KB) | DOI: 10.5994/jei.1.1.18

Abstract

Pink bollworm, P. gossypiella, is a main pest of cotton that causes boll damage up to 70%. Recommended IPM has not effectively control this pest. The use of parasitoids of this pest is one of strategy to manage this pest population as using chemical control is expensive and caused secondary pest. This research objective is to study some biological aspects of pink bollworm parasitoids by doing exploration of the parasitoids in cotton growing areas and testing the potential candidates as biocontrol agents. The activity was conducted from April - December 2001. The research was conducted in two steps: survey and laboratory tests. The survey was conducted in East Java (Asembagus and Lamongan), Central Java (Brebes) and South Sulawesi (Bone) by collecting pink bollworm eggs and identifying the emerged parasitoids. Laboratory tests were done in Biological Control Laboratory of ITFCRI, Malang, consists of reproductive performance aspects. We found two and five species of egg and larval parasitoids, respectively. Parasitism level of egg was 81% by Tichogrammatoidea spp. and that of larva was 24% by Apanteles sp. These two parasitoids are predominant and found in all cotton growing areas. Tichogrammatoidea spp. have opportunity to be used as biocontrol agent in release program, while Apanteles sp. would have valuable role in conservation approach.
Co-Authors Dwi Adi Sunarto Sujak Sujak