Abundance and attack Intensity of Nilaparvata lugens Stal 1854 (Hemiptera:Delphacidae)after population outbreak di Padang City West Sumatera

My, Syahrawati and Hasmiandy, Hamid and Rusdi, Rusli and Ongki Aditia, Putra Abundance and attack Intensity of Nilaparvata lugens Stal 1854 (Hemiptera:Delphacidae)after population outbreak di Padang City West Sumatera. In: International Conference on Biodiversity, 4-5 Nov 2017, Medan, Indonesia. (Unpublished)

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Abstract

Nilaparvata lugens Stal 1854 (Hemiptera: Delphacidae) or brown planthopper (BPH) is a major rice pest worldwide. But, BPH was not the main problem for farmers in Padang City before 2012. There has been an increase of attack level during 2015-2017, but there were no reports related to the abundance and attack intensity in the field. This study aimed to determine BPH abundance and attack intensity in Padang City. The study was conducted by using survey method, meanwhile site selection was based on the incidence of BPH attack at least 3 times in the previous planting season, IR 42 varieties and reported as endemic WBC area in Padang City. The observations were made at biweekly intervals during vegetative and generative phases of rice in Nanggalo, Kuranji, and Pauh. Number of BPH were collected from 30 hills by using D-vac vacuum modified, selected randomly from each field. The results showed that the population of BPH was found in all locations. The highest abundance was found in Kuranji (the main endemic areas of BPH). The BPH abundance tended to decrease in Kuranji, but it tended to increase in Pauh and Nanggalo. Attack intensities were low overall, it tended to increase in Nanggalo.

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