YUNISMAN .
Departement Plant Protection, Agriculture Faculty, Universitas Andalas. Jl. Unand, Limau Manis, Padang 25175, West Sumatra, Indonesia

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Pengaruh Instar Larva Inang Spodoptera litura Fabricius (Lepidoptera: Noctuidae) terhadap Keberhasilan Hidup Parasitoid Eriborus argenteopilosus Cameron (Hymenoptera: Ichneumonidae) Novri Nelly; Yunisman Yunisman; Yulia Rahmawati
Jurnal Entomologi Indonesia Vol 8 No 1 (2011): April
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (102.707 KB) | DOI: 10.5994/jei.8.1.36

Abstract

Research on the effect of host larval stage on survivorship of the parasitoid E. argenteopilosus was conducted under laboratory conditions. Survivorship was studied by using S. litura larval with different stage (1st, 2nd, 3rd, and 4th instars). Result of the research indicated that development rate of the parasitoid E. argenteopilosus is faster when reared on 3rd instar larvae. The higher the level of host-instar larvae, shorter time was needed to complete the parasitoid’s life cycle. Only 4.67% of the larvae completed its development to pupal stage, and only 1% reached adulthood, with males being the dominant of the emerging adults.
Kolonisasi Beberapa Jamur Antagonis Pada Akar Tanaman Cabai (Capsicum annuum L.) dan Pengaruhnya Terhadap Penekanan Penyakit Antraknosa yang Disebabkan Oleh Colletotrichum gloeosporioides Nurbailis Jamarun; Yunisman Yunisman
Jurnal Proteksi Tanaman Vol 1 No 1 (2017): June 2017
Publisher : Plant Protection Departement, Faculty of Agriculture, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (230.062 KB) | DOI: 10.25077/jpt.1.1.1-9.2017

Abstract

Penyakit antraknosa merupakan penyakit penting pada tanaman cabai yang disebabkan oleh Colletotrichum gloesporioides. Penelitian ini bertujuan untuk mendapatkan jamur antagonis unggul yang mampu mengkolonisasi akar tanaman cabai dan efektif mengendalikan penyakit antraknosa yang disebabkan oleh Colletotrichum gloesporioides. Metode penelitian menggunakan Rancangan Acak Kelompok (RAK) dengan 10 perlakuan dan 4 ulangan. Jamur antagonis yang digunakan yaitu: Trichoderma isolat 1, Trichoderma isolat 2, Trichoderma isolat 3, Trichoderma isolat 4, Paecilomyces isolat 1, Paecilomyces isolat 2, Paecilomyces isolat 3, Paecilomyces isolat 4, dan Aspergilus sp. Aplikasi jamur antagonis dilakukan dengan merendam akar tanaman cabai pada suspensi jamur dan aplikasi jamur patogen dilakukan dengan menyemprotkan suspensi jamur pada buah cabai sampai seluruh permukaannya basah. Hasil penelitian menunjukkan bahwa semua jamur antagonis yang diuji mampu mengkolonisasi akar tanaman cabai. Isolat yang terbaik dalam mengkolonisasi dan penekanan penyakit antraknosa adalah Trichoderma isolat 3 yang memiliki kemampuan kolonisasi sebesar 95,83%, persentase buah terserang 18,75% dan intensitas serangan sebesar 20% dan Trichoderma isolat 1 memiliki kemampuan kolonisasi sebesar 91,66%, persentase buah terserang 25,00% dan intensitas serangan sebesar 32,50%.
Aktivitas Insektisida Campuran Ekstrak Air Buah Piper aduncum L. (Piperaceae) dan Batang Cymbopogon ciratrus (Dc.) Stapf (Poaceae) Terhadap Larva Crocidolomia pavonana F. (Lepidoptera: Crambidae) Eka Candra Lina; Adventus Supriadi; Yunisman Yunisman; Martinius Martinius
Jurnal Proteksi Tanaman Vol 1 No 1 (2017): June 2017
Publisher : Plant Protection Departement, Faculty of Agriculture, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (207.733 KB) | DOI: 10.25077/jpt.1.1.34-41.2017

Abstract

Crocidolomia pavonana is an important pest in Brassicaceae. Botanical insecticides is pest control alternative which meet to eco-friendly manajement. This study aims to determine lethal concentration of single and mixture of water extract of Piper aduncum (Piperaceae) fruit and Cymbopogon cirtatus (Poaceae) stem against Crocidolomia pavonana larvae. The study was conducted in laboratory experiment through preliminary test and advance test using a completely randomized design (CRD). Observations were included to larval mortality, antifeedant effect, and duration of larval development. Bioassay was done against second instar larvae of C. pavonana using leaves immersion method during 48 hours. The results show that LC50 and LC95 value of mixture extract are 2.83% and 5.79% respectively. Based on index combination analysis, P. aduncum and C. citratus mixture extract were antagonistic at LC50 and additive at LC95 . Water extract of P. aduncum and C. citratus were relatively weak to influence feeding activity of C. pavonana larvae (41%). Mixture extract also extend larval development from second instar to third instar around 0.24 days and third instar to fourth instar around 0.97 days.
Potency of Indigenous Epiphytic Yeast to Control Colletotrichum capsici, the Cause of Anthracnose Disease in Red Chili Darnetty Darnetty; Utari Hermaleni; Yunisman Yunisman
Jurnal Proteksi Tanaman Vol 6 No 2 (2022): December 2022
Publisher : Plant Protection Departement, Faculty of Agriculture, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jpt.6.2.55-64.2022

Abstract

Anthracnose is an important disease in red chili caused by Colletotrichum capsici which can reduce productivity by up to 65%. Controlling using indigenous epiphytic yeasts has never been done. The study aimed to determine the ability of indigenous epiphytic yeast isolates to control C. capsici on red chili. The study was carried out at the Phytopathology Laboratory, Faculty of Agriculture, Universitas Andalas, from August 2019 - April 2020 in vitro and in vivo. The study used a completely randomized design (CRD) which consisted of 6 treatments with five different isolates (4 isolates from fruit and one from leaves) and a control. Parameters observed were macroscopic and microscopic characteristics of yeasts, C. capsici colony area, disease incubation period, and anthracnose symptoms. The results showed that the five epiphytic yeast isolates could suppress the growth of C. capsici, inhibit colony expansion between 27.09 – 59.11%, extend the incubation period for one day, and inhibit the expansion of anthracnose symptoms between 52.30 – 62.64%. Epiphytic yeast isolate KB1 derived from fruit has the highest inhibition.
PEMANFAATAN AGEN HAYATI UNTUK PENGELOLAAN OPT CABAI PADA KELOMPOK TANI SIMABUR SUKSES MAKMUR DI KECAMATAN PARIANGAN KABUPATEN TANAH DATAR Trizelia Trizelia; Nurbailis Nurbailis; Yulmira Yanti; Winarto Winarto; Haliatur Rahma; Martinius Martinius; Yenny Liswarni; Rusdi Rusli; Yunisman Yunisman; Darnetty Darnetty; Eri Sulyanti
Jurnal Hilirisasi IPTEKS Vol. 2 No. 3.b (2019)
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jhi.v2i3.b.331

Abstract

Cabai merah merupakan sumber pendapatan utama bagi petani di daerah Tanah Datar. Masalah utama yang selalu dihadapi oleh petani cabai di daerah ini adalah serangan hama dan penyakit yang dapat menyebabkan kehilangan hasil yang cukup tinggi. Hingga saat ini, pengendalian hama dan penyakit sayuran masih mengandalkan pestisida sintetik yang telah menimbulkan dampak negatif. Untuk itu, perlu dicari alternatif pengendalian yang dapat mengurangi dampak negatif pestisida tersebut, yaitu menggunakan agens hayati seperti cendawan Beauveria bassiana dan Trichoderma sp.Tujuan dari kegiatan pengabdian kepada masyarakat ini adalah untuk memperkenalkan dan memasyarakatkan pengendalian hama dan penyakit menggunakan agens hayati Beauveria bassiana dan Trichoderma sp. Metode kegiatan pengabdian adalah penyuluhan, pelatihan dan praktek lapangan. Minat petani untuk menggunakan agens hayati terutama Beauveria bassiana dan Trichoderma cukup tinggi dan telah memotivasi mereka untuk mengurangi penggunaan pestisida sintetis. Petani juga telah berhasil memperbanyak agens hayati dan membuat kompos limbah pertanian menggunakan Trichoderma.
Distribution and genetic diversity of Spodoptera frugiperda J. E. Smith (Noctuidae: Lepidoptera) on maize in West Sumatra, Indonesia Novri Nelly; Eka Candra Lina; Hasmiandy Hamid; Yunisman Yunisman
Biodiversitas Journal of Biological Diversity Vol. 22 No. 5 (2021)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d220507

Abstract

Abstract. Nelly N, Hamid H, Lina EC, Yunisman. 2021. Distribution and genetic diversity of Spodoptera frugiperda J. E. Smith (Noctuidae: Lepidoptera) on maize in West Sumatra, Indonesia. Biodiversitas 22: 2504-2511. Fall Armyworm (FAW), Spodoptera frugiperda is a major maize pest, reportedly entering West Sumatra, Indonesia in early 2019. After a year of its discovery, there has been no information on the distribution and genetic diversity of this pest. In the present study, research has been carried out to obtain reliable information on the spread, incidence, and genetic diversity of this pest during July-October 2020 at the maize production center of West Sumatra, Indonesia. Sampling was then carried out using the purposive random sampling method, on maize fields in 5 districts (West Pasaman, Padang Pariaman, Solok, Limapuluh Kota and, Tanah Datar). The sample plots were determined with a size of 1x1m2 to observe the population and incidence, meanwhile, the observations were recorded on the larvae number and the percentage damage. Each district location's genetic diversity was analyzed based on the mitochondrial cytochrome c oxidase subunit I (COI) gene nucleotide variations amplified with specific primers. The observations show that S. frugiperda had attacked all maize planting sites in West Sumatra with the attacks ranging percentage from 12.78 to 41.25% and an average larval population of 0.26-1.05 larvae / 2 plants. The genetic diversity analysis results of the S. frugiperda West Sumatra population, on the phylogenetic tree, were divided into two groups, the first is group A which consisted of West Pasaman isolates, and Solok isolates. The second, Group B consisted of Padang Pariaman, Limapuluh Kota, and Tanah Datar isolates (The percentage genetic similirity 99.86-100%). The S. frugiperda population genetics in West Sumatra are similar to those isolates from several other countries in the world.
Several local food plants with the potential as hosts for Spodoptera frugiperda (Lepidoptera: Noctuidae) Novri Nelly; Hasmiandy Hamid; Eka Candra Lina; Yunisman Yunisman; Hidrayani Hidrayani; Dwi Monica Widya Sari
Biodiversitas Journal of Biological Diversity Vol. 23 No. 3 (2022)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d230361

Abstract

Abstract. Nelly N, Hamid H, Lina EC, Yunisman, Hidrayani, Widyasari DM. 2022. Several local food plants with the potential as hosts for Spodoptera frugiperda (Lepidoptera: Noctuidae). Biodiversitas 23: 1693-1699. Fall armyworm (Spodoptera frugiperda) or abbreviated as FAW is a major invasive pest of corn crops in America, its native country. Therefore, this study aims to examine the effect of several plant types as hosts on FAW biology and reproduction. It was conducted at the Insect Bioecology Laboratory, Department of Plant Protection, Andalas University using a completely randomized design (CRD) with 3 treatments and 4 replications. The FAW larvae from the field were fed with different plant leaves, namely corn (Zea mays), rice (Oryza sativa), soybeans (Glycine max), and reared until the second generation. Meanwhile, the larvae in the second generation were used as test insects with different feed treatments. Observations were made on the morphology and life parameters of FAW, including the length of the stadia, egg, larvae, pupae, and adult, as well as the laying time and pattern, with the number of eggs produced. The results showed that there were no morphological differences in S. frugiperda, except for the size. Moreover, the body size of the adult-derived from larvae fed with soybean leaves, namely 25.95 mm, was the smallest compared to corn and rice, while the shortest time for larvae development from instar I to VI was obtained with corn leaf feed for 13.55 days. The life span of females derived from larvae fed on soybean leaves was shorter than the others. Larvae fed on soybeans, female life span was 26.00, rice was 34.00 and corn was 31.44 days. Adult females of larvae given soybean leaves produced the highest number of eggs (879.44 eggs) compared to rice (505.00 eggs) and maize (546.33 eggs). Local food crops other than corn, namely rice and soybeans, can be potential hosts for S. frugiperda.
The development of Spodoptera frugiperda (Lepidoptera: Noctuidae) on several varieties of maize Novri Nelly; Hasmiandy Hamid; Eka Candra Lina; Yunisman Yunisman; Yaherwandi Yaherwandi; Yelsi Dwi Putri
Biodiversitas Journal of Biological Diversity Vol. 24 No. 1 (2023)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d240161

Abstract

Abstract. Nelly N, Hamid H, Lina EC, Yunisman, Yaherwandi, Putri YD. 2023. The development of Spodoptera frugiperda (Lepidoptera: Noctuidae) on Several varieties of maize. Biodiversitas 24: 523-530. Fall armyworm (FAW) or Spodoptera frugiperda (Lepidoptera: Noctuidae) is an invasive pest in Indonesia that cause damage to maize (Zea mays). Farmers for animal feed mainly cultivate several varieties of maize in West Sumatra, Indonesia. Therefore, it is necessary to test the resistance of maize varieties to fall armyworms planted by farmers. Therefore, this research aims to determine the resistance of several observed maize varieties based on their effects on the developmental time of S. frugiperda. The study was arranged in a Completely Randomized Design (CRD) with five treatments and five replications. The treatments for larvae feed consisted of five maize varieties: Sukmaraga, NK-212, Pioneer 21, Bonanza F1, and Secada F1. The development length from egg to adult and life parameters in the second generation were observed. Results of the study showed that the larval and pupal stages of S. frugiperda in the Sukmaraga variety had a longer development duration than the other four varieties, with the larval stage at 20.38 days and pupae at 11.26 days. In addition, the lowest pupae weight was found in the Sukmaraga variety. The maize varieties affect the length of the larval stage and the weight of the pupae and eggs produced. Based on these results, it can be concluded that Sukmaraga is a variety causing a more prolonged larval stage and lower pupae weight than other varieties. Furthermore, the eggs produced by the second-generation female S. frugiperda adult are fewer than in different varieties.
Effectiveness of Bacillus spp. from West Sumatra, Indonesia in controlling Spodoptera frugiperda (Lepidoptera: Noctuidae) NOVRI NELLY; HASMIANDY HAMID; EKA CANDRA LINA; YUNISMAN YUNISMAN; RUSDI RUSLI; YULMIRA YANTI; MONA KAIRUNISA
Biodiversitas Journal of Biological Diversity Vol. 25 No. 4 (2024)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d250415

Abstract

Abstract. Nelly N, Hamid H, Lina EC, Yunisman, Rusli R, Yanti Y, Kairunisa M. 2024. Effectiveness of Bacillus spp. from West Sumatra, Indonesia in controlling Spodoptera frugiperda (Lepidoptera: Noctuidae). Biodiversitas 25: 1472-1478. Spodoptera frugiperda J.E. Smith (Lepidoptera: Noctuidae) is an invasive pest widely recognized for attacking corn plants. This pest was first discovered in early 2019 in West Sumatra, Indonesia, posing a significant threat to agricultural productivity. To control S. frugiperda, local biological agents, namely Bacillus spp., originating from West Sumatra, have been explored as a potential control method. Therefore, this study aimed to obtain Bacillus spp isolates from rhizosphere origin and assess their effectiveness in controlling S. frugiperda in the laboratory. A completely randomized design was used, consisting of five treatments with three replications. The treatments included Bacillus cereus strain MRPLUMBE1.3, Bacillus myocytes strain MRRZLL 2.2, and Bacillus sp. MRTE strain 1.3.3. For comparison, there was a synthetic insecticide (active ingredient chlorantraniliprole) and a control (distilled water). The application of isolate suspension was carried out through larvae feed. The parameters observed included larvae mortality, percentage of formed pupae and adults (imago), number of eggs laid by females, and survival time of adults. The data obtained were analyzed using Analysis of Variance (ANOVA) and tested with LSD at the 5% level. The results showed that Bacillus spp. isolates originating from the rhizosphere effectively controlled S. frugiperda larvae. The best isolate that can be used to control S. frugiperda is Bacillus spp. from Solok. Specifically, Bacillus sp. strain MRTPE 1.3.3 showed larvae mortality ranged between 28.33 and 41.67%, and the suspension affected the percentage of formed pupae (51.66%) and the survival time of adults (4.5-5.8 days).