Control Measures for the Brown Planthopper Outbreak in Kompong Speu Province

Abstract

The aims of this research were to identify rice cropping systems and measures to control The Brown Planthopper BPH in outbreak areas in Kampong Speu province. In total, 80 households in Prey Vihear and Po Angkrong communes were randomly selected for an interview in 2008. The interviewed farmers did not grow rice all the year round and rice cultivars used were diversified. However, most cultivars are susceptible to the BPH. Moreover, Rice in early rainy season was a potential source for immigrant BPH multiplication. Almost all effective measures, both physical (mosquito net to trap insects and dispatching ducks in the fields) and chemical (Buprofezin, Fenobucarb and Denotefuran) were introduced by the Provincial Department of Agriculture (PDA). Meanwhile, the only one effective measure innovated by farmers was the application of used engine oil. However, this substance was not promoted by the PDA. No farmer lost rice completely in the outbreak year because all households possess small fragmented paddy fields in three different agro-ecosystems, so the periods of transplanting and growing were also different.