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All Journal Jurnal Agrosilvopasture-Tech Jurnal Pertanian Kepulauan
Masauna, Esther D
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Agriculture, Biological Sciences & Forestry

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Kepadatan Populasi dan Intensitas Kerusakan Sexava coriacea L. pada Tanaman Kelapa di Halmahera Barat - Maluku Utara Mosu, Kristofel R; Siahaya, Victor G; Masauna, Esther D
Jurnal Agrosilvopasture-Tech Vol 2 No 2 (2023): Jurnal Agrosilvopasture-Tech
Publisher : Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/j.agrosilvopasture-tech.2023.2.2.338

Abstract

The purpose of the study was to obtain dense data on the population of Sexava coriacea pests and the amount of damage intensity to coconut plants in West Halmahera, North Maluku. The method used is a survey and interview of farmers, where the sample villages are determined proportionally to the villages with the highest number of coconuts. Determining the level of population density begins by determining each of the two leaf sheaths facing west and east. Counting insects (imago or nymphs) found on predetermined fronds as many as 600 fronds. The extent of damage was obtained by taking five leaf sheaths, for a total of 750 leaf sheaths. The results showed that the insect pest found was Sexava coriacea L. The average dense population of S. coriacea in Kie Ici village ranged from 18-77 nymphs per tree, a total of 325 heads, an average of 1.63 heads per midrib of coconut leaves, Naga village ranged from 4-36 nymphs per tree, a total of 275 heads, an average of 1.38 heads per midrib of coconut leaves, Maritango village ranges from 10-34 nymphs per tree, a total of 200, an average of 1.00 per midrib of coconut leaves. The average percentage of attacks and damage rate in Maritango village was 32.4% (medium), Naga village 42.8% (medium), and Kie Ici village 48.4% (medium). Natural enemies found in the field are spiders (Arachnida), weaver ants (Oecophylla smaragdina), and suuku birds (Centropus goliath Bonaparte).
Tempat Persarangan Lebah Hutan (Apis dorsata F.) di Pulau Sermata Lamerkabel, Jacobus S. A.; Masauna, Esther D; Utuwaly, Imas D; Jaya, Firman; Lastriyanto, Anang; Yunus, Mochammad; Batoro, Jati; Erwan, Erwan; Masyithoh, Dewi; Ustadi, Ustadi
JURNAL PERTANIAN KEPULAUAN Vol 8 No 1 (2024): Jurnal Pertanian Kepulauan
Publisher : Fakultas Pertanian, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/jpk.2024.8.1.1

Abstract

The aim of the study was to determine the nesting sites of Apis dorsata (F) forest bees. the method used in this research was a descriptive survey. The results showed that trees and rock cliffs are nesting sites for forest bees on the island of Sermata. The Banyan tree is a tree that is preferred as a nesting place for forest bees (4 trees) in addition to Mango trees (2 trees), Salawaku (2 trees) , Kemiri (1 tree) , and Parna (1 tree). The height of the nesting places of forest bee colonies on trees and rock cliffs from the ground is at an altitude of 2.82 m to 27.40 m. The mango tree is the lowest forest bee nesting tree, while the highest is found in the banyan tree (20.51 m) and rock cliff 27.40 m. The habitat for the most forest bee colonies was 95 colonies in the range > 0-100 masl and 20 colonies in the range > 100-200 masl. The number of forest bee nests found in the locations of the villages of Regoha, Rotnama, Lelang, and Elo was 115 colony nests.
Co-Authors Anang Lastriyanto Erwan Erwan, Erwan Firman Jaya Jati Batoro Lamerkabel, J. S. A. Masyithoh, Dewi Mochammad Yunus, Mochammad Mosu, Kristofel R Siahaya, Victor G Ustadi Ustadi Utuwaly, Imas D