59-05-032 Proceeding

401 Proceedings of the Princess Maha Chakri Sirindhorn Congress The climate change generally effect honeybees as summarized by Y. Le Conte and M. Navajas, 2008 as follows: l direct influence on honeybee behavior and physiology l alter the quality of the floral environment l increase or reduce colony harvesting capacity and development l define new honeybee distribution ranges l give rise to new competitive relationships among species and races, as well as among their parasites and pathogens Rice is the most important economic crop in Thailand. The production for domestic consumption and export is drastically important to both farmers and national government. The brown planthopper (Nilaparvata lugens) is the dominant rice insect-pest in Thailand. During 2009 - 2013, rice fields damaged by Brown planthopper in Thailand (Figure 6) was estimated of 5M Rai (800,000 ha) or USD788M (Rice Department, 2015). The outbreak of the insect-pest was studied to attribute to the combined effects of elevated temperature and CO 2 that may enhance the brown planthopper population size. (SHI Bao-kun, 2014) Figure 4 Thailand’s temperature trend (http://berkeleyearth.lbl.gov/regions/thailand)