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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1142.827 KB) | DOI: 10.5994/jei.11.2.81

Abstract

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.
Aras kerusakan ekonomi (AKE) larva Ostrinia furnacalis (Lepidoptera: Crambidae) pada tiga fase pertumbuhan tanaman jagung Subiadi, Subiadi; Trisyono, Y. Andi; Martono, Edhi
Jurnal Entomologi Indonesia Vol 11 No 1 (2014): April
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (407.101 KB) | DOI: 10.5994/jei.11.1.19

Abstract

The Asian corn borer, Ostrinia furnacalis (Guenée) is an important economic pest of corn and is widely distributed in the Asia-Pacific region, including Indonesia. The objective of this research is to investigate the effect of infestation levels of O. furnacalis larvae per plant on corn grain yield reductions, and to determine economic injury levels (EIL) of O. furnacalis larvae at three growth stages (V10, R1, and R2) of corn. The experiment was designed in a split-plot randomized complete block with blocks replicated three times. Differences in grain weight between the uninfested and highest infestation levels (six larvae per plant) V10, R1, and R2 were 59.81; 58.76; and 49.20 g/plant, respectively. For each additional infestation by one larvae per plant at V10, R1, dan R2, there is reduction in grain weight of 4.94%, 4.56% and 3.76% respectively. The calculation of EILs was based on the proportion of yield loss per larvae per plant on three corn growth stages with the assumption that pesticide control reduced 67% of O. furnacalis population. The lowest EIL was 0.31 larvae per plant at V10 when the cost of control reaching Rp.125,000 per ha and crop value of Rp.12,000,000 per ha. The highest EIL of 1.24 larvae per plant was found at R2 with the cost of control of Rp.250,000 per ha and crop value of Rp.8,000,000 per ha.
Co-Authors - Mulyadi - Mulyadi - Muryati - Witjaksono Abdul Aziz Agustina Dwi Wijayanti Ahmad Taufiq Arminudin Ananto Triyogo Araz Meilin Araz Meilin Araz Meilin Arman Wijonarko Arman Wijonarko Arman Wijonarko Aryuwandari, Valentina E. F. Aye Kyawt Kyawt Ei Aziz Purwantoro Azzahra, Zulfa Bambang Sumiarto Bambang Sumiarto Budi Setiadi Daryono DAMAYANTI BUCHORI De Faveri, Stefano Didik Indradewa Donny Satria, R. Gagak Dwi Wijayanti Dwi Wijayanti Dyah Rini Indriyanti Eddy Mahrub Edhi Martono Edhi Martono Edhi Martono Edhi Martono George Andrew Charles Beattie George Andrew Charles Beattie Hanna Kawulur, Hanna Hanna S.I. Kawulur Hanna S.I. Kawulur, Hanna S.I. Harahap, Nafsiyah Agustina Harjanto, Sriyanto Harwanto (Harwanto) Helina, Selvi Hendrayanti, Hadvina Nur Hidayat Soesilohadi I. Indriyati Wibisono Ignatius Julijantono Ika Puji Rahmawati K Untung Kasumbogo Untung Kurnia Pratiwi Melhanah Melhanah Mizu Istianto Mizu lstianto Mofit Eko Poerwanto Muliadi, Ahmad Muliadi, Ahmad Muryati Muryati Nasrullah, Nasrullah Nasrullah, Nasrullah Nemay Anggadewi Ndaong, Nemay Anggadewi Nur Khasanah Palupi Jatuasri Paul Holford Praptana, R. Heru R Heru Praptana R. Gagak Donny Satria R. Gagak Donny Satria R.C. Hidayat Soesilohadi Rachmawati, Jeti Sari, Riya Fatma SEDYO HARTONO Serafina T.S. Rahayu Setyaningrum, Ary V. Siwi Indarti Somowiyarjo, Susamto Sri Suharni Siwi SRI SULANDARI St. Margino Subandi Subejo Subiadi Subiadi Subiadi Subiadi Suciati Hadi Wuryaningsih Sudi Pramono . Sumardi . Sumardi Sumardi Sumardiyono, Y. B. Sumardiyono, Y. B. Sumardiyono, Y. B. Suprihanto, Suprihanto Supriyadi Supriyadi Suputa Suputa Suputa Suputa Suryani, Julia Nanda Susamto Somowiyarjo SUWARNO HADISUSANTO T Yuwono Tanjung, Heru Rezki TRIS HARIS RAMADHAN Triwibowo Yuwono Vijaysegaran, Shanmugam Wagiman, Franciscus Xaverius Wahyono - Wahyono Wahyono Wahyu Listyaningrum Widiarta, I Nyoman Witjaksono . Witjaksono Witjaksono Witjaksono Witjaksono Witjaksono Witjaksono Y B Sumardiyono Yosefus F. da-Lopez Yuantomoputro, Arzaq P. Yuni Ratna