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All Journal Agrikultura JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Hutasoit, Rudi Tomson
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Agriculture, Biological Sciences & Forestry

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THE ABUNDANCE AND DIVERSITY OF THRIPS (THYSANOPTERA: THRIPIDAE) ON CHILI (CAPSICUM ANNUUM L.) AND CAYENNE (CAPSICUM FRUTESCENS L.) IN BOGOR Hutasoit, Rudi Tomson; Triwidodo, Hermanu; Anwar, Rully
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 19, No 1 (2019): MARCH, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/j.hptt.11933-41

Abstract

The Abundance and Diversity of Thrips (Thysanoptera: Thripidae) on Chili (Capsicum annuum L.) and Cayenne (Capsicum frutescens L.) in Bogor. This research aimed to study the abundance and diversity of thrips on chili pepper and cayenne pepper plants. Observation of thrips was conducted on chili pepper and cayenne pepper in fourteen sites in four different locations in Bogor that are: Dramaga, Cibungbulang, Tenjolaya, and Cisarua. Thrips were collected from leaves and flowers from 10 plant samples that had been selected randomly. The thrips were identified and the number of thrips were calculated. The abundance of adults, nymphs, and total of thrips on the flowers of chili pepper was 0.39, 0.01, and 0.40 thrips/flower respectively. Meanwhile, the abundance of adults, nymphs, and total of thrips on the flowers of cayenne pepper was 0.36, 0.02, and 0.38 thrips/flower respectively. The abundance of adults, nymphs, and total of thrips on the leaves of chili pepper was 0.68, 0.12, and 0.81 thrips/twiq respectively. Meanwhile, the abundance of adults, nymphs, and total of thrips on the leaves of cayenne pepper was 0.47, 0.14, and 0.61 thrips/twiq respectively. Four species of thrips were found infesting flowers of chili pepper and cayenne pepper i. e. Thrips parvispinus, T. hawaiiensis, Scirtothrips dorsalis, and Haplothrips gowdeyi.  Species of T. parvispinus, T. hawaiiensis, S. dorsalis belong to suborder of Terebrantia family Thripidae, meanwhile H. gowdeyi belongs to suborder Tubulifera family Phlaeothripidae. T. parvispinus is the most dominant species found infesting flowers and leaves of the chilli pepper and cayenne pepper were 71% and 56 %.
Introduksi Varietas Unggul Baru Didukung Teknologi Pengelolaan Tanaman Terpadu (PTT) Meningkatkan Produktivitas Padi di Manggarai Barat Sitorus, Alfonso; Lumban Tobing, Jeannette Maryanty; Manurung, Erpina Delina; Purba, Hendri Ferianson; Hutasoit, Rudi Tomson; Purmanto, Dwi
Agrikultura Vol 35, No 2 (2024): Agustus, 2024
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/agrikultura.v35i2.54057

Abstract

Padi adalah bahan makanan pokok penting di Indonesia, tetapi produktivitasnya di Manggarai Barat, Nusa Tenggara Timur masih rendah. Penggunaan Varietas Unggul Baru (VUB) dengan Pengelolaan Tanaman Terpadu (PTT) merupakan salah satu kunci peningkatan produksi padi di NTT. Tujuan penelitian ini adalah menemukan varietas yang beradaptasi baik di Manggarai Barat dengan penerapan PTT untuk direkomendasikan sebagai alternatif pilihan petani. Penelitian dilaksanakan pada Mei-Agustus 2021 di Desa Compang Longgo Kecamatan Komodo Kabupaten Manggarai Barat. Budidaya menggunakan Rancangan Acak Lengkap. Perlakuannya adalah tiga VUB: Inpari 42 Agritan GSR, Inpari 48 Blas, Inpari IR Nutri zinc, dan satu varietas yang sudah tersebar luas Inpari 32 HDB sebagai pembanding. Semua varietas dibudidayakan dengan menggunakan paket teknologi PTT. Hasil menunjukkan bahwa perlakuan varietas berpengaruh nyata (P<0,05) terhadap variabel tinggi tanaman, anakan per rumpun, malai per rumpun, gabah per malai, gabah isi per malai, berat 1.000 butir, dan gabah kering giling (GKG), sementara variabel jumlah panjang malai tidak berbeda nyata (P>0,05). Hasil VUB yang diuji berkisar antara 6,87-7,28 ton GKG/ha lebih tinggi dibandingkan dengan varietas pembanding Inpari 32 HDB. Lebih lanjut, secara ekonomi penerapan VUB dengan teknologi PTT di Manggarai Barat layak diusahakan (B/C>1). Inpari 42 Agritan GSR, Inpari 48 Blas, Inpari IR Nutri Zinc dengan penerapan PTT mampu beradaptasi baik dan layak diusahakan di Kabupaten Manggarai Barat sebagai alternatif varietas untuk petani.
Biology and demographic statistics of the green leafhopper (Nephotettix virescens Distant) as the main vector of tungro virus in tungro-resistant rice varieties Hutasoit, Rudi Tomson; Widiarta, I Nyoman; Jihad, Muhammad; Sitorus, Alfonso; Susilawati, Susilawati; Puspitasari, Mahardika
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 25 No. 1 (2025): MARCH, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA: JOURNAL OF TROPICAL PLANT PE
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jhptt.12596-105

Abstract

Tungro disease is one of the major constraints to rice production in Indonesia. Although tungro-resistant rice varieties have proven effective in reducing the spread of the virus, it is essential to consider their impact on the development of vector insect populations. This study aims to investigate the biology and demographic characteristics of Nephotettix virescens Distant on various tungro-resistant rice varieties. The research was conducted by maintaining and observing the development of N. virescens on the tungro-resistant varieties Inpari 7, Inpari 8, Inpari 9, Inpari 36, and Inpari 37, as well as the susceptible variety Taichung Native 1 (TN 1), under controlled environmental conditions with regulated temperature and humidity. Development was observed daily until the last individual died. The results indicated that the life cycle, longevity, and lifespan of N. virescens maintained on tungro-resistant varieties differed significantly from those on the susceptible variety TN 1. The life cycle of N. virescens on Inpari 7, Inpari 8, Inpari 9, Inpari 36, and Inpari 37 was 27.57, 30.50, 27.60, 30.80, and 31.64 days, respectively, whereas on the susceptible variety TN 1, it lasted only 24.94 days. Demographic statistical analysis revealed that the net reproductive rate (R?) and intrinsic rate of increase (r) of N. virescens maintained on tungro-resistant varieties were lower than those on the susceptible variety TN 1. Additionally, these tungro-resistant varieties resulted in a longer generation time (T) and doubling time (DT). Consequently, the tungro-resistant varieties negatively affected the vector by prolonging its life cycle, increasing the average generation time (T) and doubling time (DT), and reducing both the net reproductive rate (R?) and the intrinsic rate of increase (r). These five varieties can be considered as options for varietal rotation to suppress the growth of insect vector populations and limit the spread of the tungro virus, especially in tungro-endemic areas.
Co-Authors Hermanu Triwidodo I Nyoman Widiarta Jihad, Muhammad Lumban Tobing, Jeannette Maryanty Manurung, Erpina Delina Purba, Hendri Ferianson Purmanto, Dwi Rully Anwar Sitorus, Alfonso Susilawati, Susilawati