His research topic in the CRC 990 project is Landscape Management Effects on Biological Control in Oil Palm Plantations. Understanding the relative importance of four factors namely surrounding the plantation, oil palm understory, pesticide applications and fertilizer usage is important for developing sustainable control of oil palm pests and diseases in Indonesia. His PhD study is funded by Deutscher Akademischer Austausch Dienst (DAAD) scholarship, while his PhD research was supported by CRC 990 project.