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All Journal Jurnal Perlindungan Tanaman Indonesia Jurnal Entomologi Indonesia

Y. Andi Trisyono

Jurusan Hama dan Penyakit Tumbuhan, Fakultas Pertanian, Universitas Gadjah Mada

Author-ID : 3094686

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Pola Sebaran Kelompok Telur Ostrinia furnacalis Guenée (Lepidoptera: Crambidae) pada Beberapa Fase Pertumbuhan Tanaman Jagung (Zea mays L.) Subiadi Subiadi; Y. Andi Trisyono; Edhi Martono
Jurnal Perlindungan Tanaman Indonesia Vol 18, No 1 (2014)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.15573

A field study was conducted to determine the distribution of egg masses of Ostrinia furnacalis on corn leaves and within corn field. The corn field was divided into three regions: the inner edge closed to other crops and outer edge closed to main road and the middle region. The numbers of egg masses laid were recorded entirely in all corn plants existed (census method). Egg laying period lasted for 34 days, with 11 days from initiation of egg laying to the peak of oviposition and 23 days from the peak to termination of egg laying. The egg masses laid on corn leaves were distributed in aggregation pattern. During eight-opened-leaf to twelve-opened-leaf stages, there were 847 egg masses found, and 80.9% was laid on the sixth-to-ninth leaves. From tasseling to blister stages there were 491 egg masses found of which approximately 80.7% was laid on the seventh-to-11 32.8, and 29.8% of those were found in the inner edge, middle, and outer edge of corn field, respectively. leaves. Egg masses laid within corn field varied, in which 37.4, 32.8, and 29.8% of those were found in the inner edge, middle, and outer edge of corn field, respectively. Kajian lapang dilaksanakan untuk mengetahui pola sebaran peletakan kelompok telur ngengat Ostrinia furnacalis pada daun tanaman jagung dan penyebarannya pada lahan pertanaman jagung. Lahan penelitian dibagi menjadi tiga kelompok yaitu lahan pinggir dalam berdekatan dengan pertanaman lain, bagian tengah lahan, dan lahan pinggir luar berdekatan dengan jalan raya. Pengamatan kelompok telur dilakukan pada seluruh tanaman jagung (sensus). Periode peletakan telur berlangsung selama 34 hari, dengan periode inisiasi hingga puncak 11 hari dan periode setelah puncak hingga akhir peletakan telur 23 hari. Peletakan telur O. furnacalis pada daun tanaman jagung menyebar secara berkelompok. Pada fase 8 hingga 10 daun telah terbuka sempurna ditemukan sebanyak 847 kelompok telur, 80,9% diantaranya ditemukan pada daun ke 6–9. Pada fase VT (bunga jantan) hingga fase R2 (bunga betina telah kering) ditemukan sebanyak 491 kelompok telur, 80,7% diantaranya ditemukan pada daun 7–11. Penyebaran kelompok telur pada bagian lahan terjadi secara berkelompok. Jumlah kelompok telur tertinggi berturut-turut dari bagian lahan pinggir dalam, bagian tengah lahan, dan bagian lahan pinggir luar masing-masing 37,4; 32,8; dan 29,8%.

Pola sebaran kelompok telur Ostrinia furnacalis Guenée (Lepidoptera: Crambidae) pada lahan jagung Yosefus F. da-Lopez; Y. Andi Trisyono; Witjaksono Witjaksono; Subiadi Subiadi
Jurnal Entomologi Indonesia Vol 11 No 2 (2014): September
Publisher : Perhimpunan Entomologi Indonesia

Asian corn borer, Ostrinia furnacalis Guenée, is known as an important pest of maize, Zea mays L., in both whorl and reproductive stages. Management decisions based on egg-mass density is useful because decision is made before damage occurs. Observation on O. furnacalis egg-mass distribution in maize-field was carried out in Agricultural Training, Research, and Development Station (ATRD) UGM, Yogyakarta. The number of egg-masses laid on each plant surface in maize-field was sampled in reproductive stage of corn at 52 – 58 days after planting. The spatial dispersion was analyzed using the ratio variance-to-mean (σ2/μ = Iδ), Morista’s Index (Iγ), and the negative binomial parameter (κ-value). The results showed that horizontal and vertical distributions were aggregated distributions (σ2 > μ or σ2/μ > 1). In line with the increasing age of plant, the degree of clustering or aggregation likely tended to decline (the κ-value increased, Morisita index decreased) indicating the possible departure from aggregation to randomness (Poison distribution) due to the heterogeneity of the environment, such as microclimate, preferred parts of the plants, and occurrence of natural enemies. The results concluded that the horizontal and vertical distributions of egg-masses of O. furnacalis on corn in generative phase were clustered with the degree of clustering tended to decrease by the increase of age of corn. These findings provide the bases for further study on the ecology and biology of O. furnacalis for management decision-making process.

Teknik perbanyakan massal parasitoid Anagrus nilaparvatae (Pang et Wang) (Hymenoptera: Mymaridae) dengan kotak plastik Araz Meilin; Y. Andi Trisyono; Edhi Martono; Damayanti Buchori
Jurnal Entomologi Indonesia Vol 9 No 1 (2012): April
Publisher : Perhimpunan Entomologi Indonesia

Anagrus nilaparvatae (Pang et Wang) is an egg-parasitoid of rice brown planthopper (Nilaparvata lugens Stål). The objective of this study was to develop a mass-rearing technique of A. nilaparvatae. Mass-rearing was done using a plastic box (14 cm × 18.5 cm × 18.5 cm, made of plastic-mica, the upper side equipped with a 10 cm test tube), placed on a tray with rice seedlings containing an estimated of 11,130 eggs of N. lugens. About 355 adult parasitoids were successfully released per box when each box was infested with 50 parasitoids. The number of parasitoids produced were reduced to 164 adults when the infestation was made at 100 parasitoids per box. The emergence of parasitoids started around 07:00 am until 04:00 pm with the highest rate (36.2%) occured at 10:00 am. One plastic box cost only Rp10.000,-; thus the estimate cost to produce one parasitoid using this tecnique was Rp60,- These findings suggest that the plastik box is a simple and inexpensive technique for mass-rearing of A. nilaparvatae.

Pengaruh insektisida deltametrin terhadap perilaku orientasi parasitoid Anagrus nilaparvatae (Pang et Wang) (Hymenoptera: Mymaridae) Araz Meilin; Y. Andi Trisyono; Edhi Martono; Damayanti Buchori
Jurnal Entomologi Indonesia Vol 12 No 3 (2015): November
Publisher : Perhimpunan Entomologi Indonesia

Host searching behaviour by a parasitoid includes orientation to the volatile compounds (odor) relesead by host or host plant. The aim of this study was to determine the changes in the orientation behaviour of Anagrus nilaparvatae (Pang et Wang), the egg parasitoid of rice brown planthoppers (Nilaparvata lugens (Stål)), after being exposed to sublethal concentrations of deltamethrin. The impact of residue on plants to the behaviour of parasitoid was also studied. The sublethal concentrations (LC10 and LC40) used were 0.023 ppm and 2.235 ppm, respectively. Deltamethrin applied to the rice plants were 12.5 ppm and 6.25 ppm, and its effect was observed at 3 hours, 1, 3 and 7 days after application. Orientation behavior was studied using Y-tube olfactometer. Application of deltamethrin at subletal concentration reduced the ability of surviving A. nilaparvatae to detect odors (volatile ompounds) released by the host, N. lugens. The higher the concentration of deltamethrin applied to the parasitoid or to the rice plants, the more prominent effect observed in the changing in the parasitoid behavious, in particular disruption to the parasitoid’s orientation to find their host. As consequences, effects of deltamethrin may lead to reduce the effectiveness of A. nilaparvatae as biological control agents in the field as a result of declining their searching capacity.

Co-Authors Araz Meilin Araz Meilin DAMAYANTI BUCHORI Edhi Martono Subiadi Subiadi Witjaksono Witjaksono Yosefus F. da-Lopez

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