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Extract Lerak as Mosquito's Larva Poison (2010) By Muhammad MIqdad Lerak plants ( Sapindus rerak DC ) is one biodiversity in Indonesia which has the advantage in the review of : • Conservation aspects One of the rare plasmanutfah . Presence status , not a lot of children and teenagers who know Indonesian plants , although it has many benefits for society lerak traditional useful to meet the needs of daily life - the day in terms of : a) Cleaning ( soap ingredients , ingredients shampoo ) b) Washer traditional batik cloth , because it preserves the fabric dye c) Washer goods - jewelry and other precious metals d) As an insecticide that can reduce insect development e) As a remedy acne , scabies , rheumatic f) Exterminator earthworm Environmental aspects Biodiversity is environmentally friendly because the waste is biodegradable and degradable . Aspects of ethno botanical These objects are often used by certain ethnic leads to wisdom . Aspects of public health Lerak as insecticides can be used to suppress the development of mosquitoes that recently became one of the causes of dengue disease , Malaria , Filariasis ( Elephant Foot ) Economic aspects Financially , lerak easily accessible by many. Lower-middle and upper middle . Global Project: Sapindus rarak as repellent mosquito larva Environment Being in the woods or the township ( 10-1600 m asl ) Distribution : Eastern India , Burma ( Myanmar ) , Indo China , Taiwan , Thailand , Peninsular Malaysia , Sumatra , Bangka , Java , Lombok , Madura , and Sumbawa . Biodiversity Classification Division : Spermatophyta Subdivision : Angiospermae Class : Dieotyledonoenae Sub Class : Archiehlamyaeae (Choripetalae and Apetalae ) Nation/Order : Sapindales Tribe/Family : Sapindaecae Highways / Genus : Sapindus Type/Species : Sapindus rarak Observation Shaped trees , woody , reaching 42 m height and a trunk diameter of up to 1 m . Pinnate compound leaves are composed spirakl . Elliptic leaflets . Generally tapered with a flat edge . 4.5-15.5 cm in length and 1.5-4 cm in width . Generally young downy leaves , but when the age increases , the leaves will fall fur and pale green leaf color menjai . Mother bones slightly protruding lower leaves and brown . 5 pieces of leaf petals , obtuse , 2-3.5 mm in length , corolla 4 strands , elongated oblong shaped with tight hairy edge , 3.5-4.5 m in length . The flowers appear on the ends of branches , sometimes in panicles 15-35 cm in length . interest belonging to one sex married one . Pollen is numbered 8 .Ovaries notched 3 , 3 bears , and 1 ovule in each chamber . ® Flowering in November . ® Fruit cook about 6 months later, in April / May Spherical fruit 2-2.5 cm in diameter . , Bitter and poisonous fruit flesh ( not to eat ) . Young fruit is green and dark brown blackish fruit . Fruit fleshy thick , oily and slightly wrinkled . At one seed per fruit found hard -skinned , with black shiny color , diameter 1 cm . Propagation Lerak generally propagated by seed . Seeds buried in the soil as deep as 1 cm , with a spacing of approximately 5 cm . Based on observations , freshly picked fruit seeds , capable of growing only 20-50 % within 2-3 weeks . Propagation by cuttings of branches , did not show satisfactory results . Relation to Biodiversity Sapindus rarak biodiversity is one of the many popular and used Research in the past . But unfortunately , the current number of conservation in nature , especially in Indonesia start rare . In fact , once lerak household is a primary requirement . Way to distribute information to the community as well as the object: Include information on the internet . Conducting workshops on biodiversity that has been mentioned to the students junior high / high school . Planting trees to encourage students lerak junior / senior high school .