CIRAD (La Recherche Agronomique Pour Le Développement) is the Center for International Agricultural Research in France which organizes to develop agricultural sustainability in the tropics and the Mediterranean area. CIRAD as a platform for researchers, especially in France and generally throughout the world, has cooperation with 90 countries in the world. One of CIRAD’s activities is to spread new knowledge in the current development of agriculture. The guest lecture with the topic “Photosynthesis and Climate Change” was given by D. Fabre who has long accompanied research in the tropics including Indonesia. The event opened by Dr. Ir. Endang Sulistyaningsih, M.Sc. Also attended by lecturers and agronomy students from various strata. The guest lecture which lasted for approximately two hours brought a lot of new knowledge about the effects of climate change which reduced rice production, especially in Indonesia. This production is influenced by photosynthesis which is inhibited in the stomata. The discussion going interestingly by bringing new ideas to be developed by agriculture in Indonesia, especially in rice cultivation. Mir