Recording coconut trees was damaged by Brontispa the first time in the year of 2000. Until 2004, infested coconut tree areas by this beetle were about 5,000 ha /5,250 ha total. There was some.heavily damaged areas such as Tuy An and Song Cau districts. From 2001, Phu Yen PPSD have conducted a lot of activities, such as Technical training on Coconut for technicians and farmers
Strengthening information of Coconut beetle in the media
Doing experiments about effecting some insectides to control the beetle
Testing the microorganism products: Metarhizium anisopliae and Beauveria bassiana
Releasing parasitized wasps (Asecodes hispinarum and Tetrastichus sp.) and Earwigs (Chelisoches variegatus) in the coconut trees plantations.ln 2008, cooperating with JIRCAS to set up two surveying sites to record somes main weather factors and population dynamics of coconut beetle and parasitized wasps. In Phu Yen, there are clearly two temperature areas in a year: from June - September, t° 30oC and from October - May, t° 30oC. In the months that t° 30oC, Brontispa density and percentage of infested trees was decreased but number of mummies/tree and percentage of parasitized trees was also very low. Generally, parasitized wasps could not work in the high temperature condition. In the months that t° 30°C, parasitized wasp could develop but number of collected mummies/tree was low, about 5 mummies/tree with parasitized percentage was lower than 10 percent. Temperature is a main factor of limitation to control Brontispa in Phu Yen. Doing study on Brontispa integrated management in local condition to determine exactly the measures to control Brontispa perfectly.