SUMMARY
A biological larvicide the local strain of B. thuringiensis H-14 which culturing in coconuts against malaria vector control of An. sundaicus with the community of participation was conducted in Kampung Laut, Cilacap regency. This study was conducted to determine the effectiveness local strain of B. thuringiensis H-14 cultured in coconuts to control malaria vector of An. sundaicus larvae. It was also conducted to measure the KAP (knowledge, attitudes and practice) of the community about malaria and local strain of B. thuringiensis H-14 in the treated location (Klaces village) and control location (Klapakerep village). Moreover, a study was determining community's willingness within keeping, increasing, and application in the breeding ponds An. sundaicus larvae. Observation of the density of larvae was conducted one day before application of the larvicide, day 1, 2, 4, 7 and 14 after application local strain of B. thuringiensis H-14 cultured in coconuts. The results showed the effectiveness of local strain of B. thuringiensis cultured in coconuts toward An. sundaicus 100 vae up to 50 % in 55.29 days. There was significant difference among knowledge, attitudes and practice at pre and post health education in the treated group (p < 0,05). But it did not show any significant difference among knowledge, attitudes and practice of the respondents in the control group (p > 0,05). After introducing and practising the way to cultivate B. thuringiensis H-14 local strain in coconuts to the society, they could accept and got interested in developing those bacteria. This study will be continued in order to evaluate the community's attitude independently to cultivate B. thuringiensis H-14 local strain in coconuts, in the storage and application way as well as evaluating mosquito larvae density.