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All Journal Agrivet: Jurnal Ilmu-ilmu Pertanian dan Peternakan Jurnal Agrisa
Rika Ludji
Universitas Nusa Cendana
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology

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Journal : Jurnal Agrisa

 1 
DETEKSI DINI KEBERADAAN SERANGGA HAMA PENTING PADA TANAMAN JAGUNG DI DESA MURUONA, KECAMATAN ILE APE, KABUPATEN LEMBATA Yasinta L. Kleden; Rika Ludji; Gregoriana H. Koten
JURNAL AGRISA Vol 10 No 2 (2021): Jurnal Agrisa
Publisher : Program Studi Agroteknologi, Fakultas Pertanian, Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/agrisa.v10i2.10356

Abstract

This study aimed to detect the presence of key insect pests on corn in Muruona Village, Ile Ape Sub District, Lembata District in East Nusa Tenggara. This research was conducted from November 2020 to January 2021 on farmer's land in the region. This study used a survey method with direct observation techniques on corn plants, and sampling was carried out using sweep nets and sticky traps. The data collected included types of key insect pests, symptoms of damage, population, and intensity of damage to corn by important insect pests. The results showed three key insect pests on corn plantation in the study area: Locusta migratoria, Ostrinia furnacalis, and Helicoverpa armigera. This key pests were detected in corn from the early vegetative to the generative period. The symptoms of damage on corn caused by Locusta migratoria, Ostrinia furnacalis, and Helicoverpa armigera occurred six days after planting (DAP), 28 DAP, and 56 DAP, respectively. Symptoms of damage to corn plants caused by Locusta migratoria are tears in the leaves resembling serrations on the edges of the leaves, both young and old. Symptoms of damage to corn plants caused by Ostrinia furnacalis are grinding holes on the stems so that the stems so that the stem become damaged and then break. Grinding marks on the cobs and dirt and grinding powder characterize symptoms of damage to corn plants caused by Helicoverpa armigera. Populations of the key insect pests Locusta migratoria, Ostrinia furnacalis, and Helicoverpa armigera were very small, with 4, 3 and 1 insect, respectively. Moreover, for the highest intensity of damage to corn plants was caused by Ostrinia furnacalis, but it was categorized as light damage intensity because it was > 0 % ≤ 25%.
UJI PREFERENSI KEONG MAS (Pomacea canaliculata L.) TERHADAP BEBERAPA TANAMAN Agustina Etin Nahas; Rika Ludji; Angelina Ningsih Agung
JURNAL AGRISA Vol 10 No 2 (2021): Jurnal Agrisa
Publisher : Program Studi Agroteknologi, Fakultas Pertanian, Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/agrisa.v10i2.10360

Abstract

This study aims to determine the preferences of the golden snail (Pomacea canaliculata L.). on several plants to determine alternative plants and host plants. This research was carried out in the Greenhouse of the Faculty of Agriculture, Nusa Cendana University, from March to May 2020. This study used a Completely Randomized Design (CRD) with four replicates and five treatments, so there were 20 experimental units. The treatments tested were plant types as feed: K1: mustard greens, K2: water spinach, K3: taro, K4: rice, and K5: water hyacinth. The initial weight of the feed was 50 g. The variables observed were the weight of the feed eaten every three days for two months and the development of the golden snail on each feed. The golden snail's development for each feed was observed in egg production, egg development, and longevity of the golden snail. Feed weight data were analyzed using variance followed by a 5% DMRT test. The golden snail's egg production, development, and longevity are presented in tables and described. The results showed that the feeding treatment of water spinach, mustard greens, taro, rice, and water hyacinth affected the eating preferences of the golden snail. Golden snail prefers to feed mustard greens than water spinach, taro, rice, and hyacinth. The golden snail produces eggs on water spinach and rice feed. The best golden snail reproduction was found on water spinach feed, which produces 1-3 groups of eggs, and the highest hatchability of golden snails was found on rice feed.
Co-Authors Agustina Etin Nahas Angelina Ningsih Agung Gregoriana H. Koten Maria Saskia Clarisa Hasiman Titik Sri Harini Yasinta L. Kleden