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Jurnal Entomologi Indonesia
ISSN : 18297722     EISSN : 20890257     DOI : -
Jurnal Entomologi Indonesia (JEI) publishes original research papers and short communications that covers the basic and applied aspect of insects and mites or other arthropods in agriculture, forestry, human and animal health, and natural resources and environmental management. The journal is published by Perhimpunan Entomologi Indonesia (Entomological Society of Indonesia). JEI was first published at the beginning of 2004 with twice per year in frequency on March and September. Since 2015, Jurnal Entomologi Indonesia has been published three times per year on March, July, and November.
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Articles 12 Documents
Search results for , issue "Vol 11 No 2 (2014): September" : 12 Documents clear
Potential damages, seasonal abundance and distribution of Empoasca terminalis Distant (Homoptera: Cicadellidae) on soybean in South Sulawesi Nasruddin, Andi; Fattah, Abdul; Baco, Muhammad Said; Said, Ahwiyah Ekawati
Jurnal Entomologi Indonesia Vol 11 No 2 (2014): September
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.11.2.93

Abstract

Plant damages caused by leafhopper, Empoasca terminalis Distant (Homoptera: Cicadellidae) on soybean were first encountered in 2007 in Makassar, South Sulawesi. The insect has been constantly associated with soybean crops in the province ever since. The purposes of the present study were to (i) evaluate potential yield loss attributable to the leafhopper in an experimental set up, (ii) seasonal abundance of E. terminalis, and (iii) distribution of E. terminalis in all major soybean-producing areas in the province. Potential yield loss due to the leafhopper was assessed in a field experiment using two large plots. One of the plots was kept leafhopper-free by weekly insecticide sprays; and the other plot was left unsprayed to allow leafhopper infestation to occur. Adult abundance was weekly monitored using a sweep net throughout the season. Nymph abundance was determined by direct count on the plant leaves. Leafhopper distribution was assessed through surveys conducted in all major soybean-producing areas in South Sulawesi, from 2009–2013. The results of the study showed that E. terminalis caused an average yield loss of 26% on susceptible crops without insecticide use. First leafhopper infestation in all planting seasons occurred two weeks after the plant emergence. Rainfall negatively correlated with the leafhopper abundance. The leafhopper existed in all major soybean production areas in the province. Therefore, our results confirmed the status of E. terminalis as an important soybean pest in the region. In addition, crops planted early in the dry season could escape from heavy leafhopper infestation.
Interaksi tropik antara hama dan parasitoid pada pertanaman sayuran: faktor pembentuk dan implikasinya terhadap keefektifan parasitoid Nugraha, Muhamad Nurhuda; Buchori, Damayanti; Nurmansyah, Ali; Rizali, Akhmad
Jurnal Entomologi Indonesia Vol 11 No 2 (2014): September
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.11.2.103

Abstract

The condition of agroecosystem may affect the diversity and effectiveness of parasitoid communities as natural enemies of insect pests. Agricultural intensification such as monoculture cultivation as well as application of insecticide could also cause declining to parasitoid diversity and ineffective performance of parasitoids in agricultural field. The objective of this research was to study trophic interaction between pests and parasitoids in different field of vegetable crops and to investigate the factors that determining those interactions as well as its implication on parasitoid effectiveness. Vegetable crop fields were grouped into three different categories i.e. based on the pattern of cultivation, diversity of vegetable crops around the field and age of plant. On each crop field, insects were sampled using 50 m of transect by collecting eggs, larvae and pupae of pests. In total, 15 species of pests and 15 species of parasitoids were recorded from eight species of vegetable crops. Based on the analysis, trophic interaction between pests and parasitoids were affected by cultivation system, condition of crop field (species diversity of crops in its surrounding) and age of vegetable plants. Although it was not significance, the effectiveness of parasitoids according to their parasitism level, tend to higher in trophic interaction that determined from crop field with organic systems and with diverse of crop plants.

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