Dadang, K .Ohsawa. Antifeedant activities of Mahogani extract to the diamond back moth,Plutella Xylostella. Inter.Soc.Southeast Asian Agric.Sci. 2003
Dewa N.S, I.W.Susanda, N.Arya, K.Ohsawa. Insecticidal activity of the leaf extract of Tinospora crispa against Diamond back moth on cabbage. J.Inter.Soc.Southeast Asian Agric.Sci. 2003
Dewa N.S, B, GDarmayasa,N.Arya, G.RaiM.Temaja, K.Ohsawa. Bactericidal activity of leave extract of Sphaerathus indica against Ralstonia solanacearum, the causal agent bacterial wilt on tomato. J.Inter.Soc.Southeast Asian.Agric.Sci. 2003
Utilization of natural products for development of insect control chemicals
(日本-イスラエル作物保護会議 2001)
Botanical insecticides as an alternative pest control agentin supporting sustainable agriculture system
(symposium of ISSAAS,Bogor 2000)
Mortality activities of seed extract of Plialthia littolaris to control Callosobruchus chinensis L.
(Seminar of Indonesia Botanical Pesticide forum, Bogor 1999)