BIK JENDUT ALTERNATIF PRAKTIKUM PADA PEMBELAJARAN KIMIA SMK JURUSAN PERTANIAN

Abstract

Learning with local potential and wisdom indispensable for learning to become more meaningful, to make it easier for students to understand chemical concepts. Author did was the author did a study at SMKN 1 Batealit Jepara majoring in agriculture which is certainly in the treatment of plants many complaints about crop pests. Seeds and fruit peel, jengkol skin and bark of rambutan fruit, jengkol and gadung have activity as antioxidants, while tannin and saponin compounds as anti-bacterial. Author invites students to experiment Bik Jendut (Seeds and fruit peel, jengkol skin and bark) make use of the content in the skin of the fruit, smoothed, mixed with water and fermented for 3 days after it is diluted and used to spray plants that have pests. As a result pl ant pests are drastically reduced on the second day. Furthermore, this natural insecticide made in the name of "bikjendut" stands for seeds, skin from jengkol, gadung and rambutan. From the practice of "bikjendut" is obtained optimum concentration at a rate of 50% and can increase the classical completeness of students in chemistry lessons.