Application of Oil Palm Empty Bunch Ash Nanoparticle on Epidermal Cell Thickness and Chlorophyll Content of the Soybean Leaf

Abstract The utilization of oil palm empty bunch (OPEB) could be a powerful solution to manage such large volume wastes produced from the plantation. Ash created this waste used as soil ameliorant well additional agent for liquid fertilizer. Its form in nano size might increase leaf absorption. Therefore, study was aimed investigate effect OPEB ash nanoparticle on epidermal cell thickness and chlorophyll content soybean leaves. This carried out using completely randomized design examine five levels concentration, ranging 0, 1.25, 2.5, 3.75, 5%. Each concentration repeated nine times. applied firstly at 2 weeks-old plants weekly up 5 Application performed through foliar spray. results showed that affect physiology, particularly structure anatomy its stomata. In addition, application 0.125% increased thickness. However, higher found inhibit formation.