Efficiency of Crude Extract from Citronella in Controlling Fungi Causing Mango Fruit Rot and Damping off in Vegetable

Abstract

Ethanol crude extract from citronella (Cymbopogon nardus (L.) Rendle) leaf was investigated, comparing  the crude extract  from fresh, partly-dried (3 days air drying), and dried leaves. Yield of crude extract from fresh, partly dried, and dried leaves were 8.40, 3.90, and 5.7 percent w/w respectively. For the efficiency to control Colletotrichum gloeosporioides (anthracnose mango fruit rot) and Botryodiplodia theobromae (mango fruit rot), it was found that crude extract from partly  dried and dried leaves at the concentration of 2,500 ppm could completely control anthracnose mango fruit rot, whereas a higher concentration up to 5,000 ppm was required to control B. theobromae completely. For damping off disease in Cruciferaceae caused by Rhizoctonia sp., crude extract from partly dried leaves at the concentration of only 500 ppm could already control the fungal growth at 100 percent.