Uji Efektivitas Asap Cair Hasil Pirolisis Tempurung Kelapa Terhadap Pertumbuhan Penyakit Gugur Daun Karet Collectotrichum (Collectotrichum gloeosporioides Penz. Sacc.)

Abstract

The research aims to know the effectiveness of liquid smoke to obstruct Collectotrichum gloeosporioides pathogen growness on the rubber plant (Hevea brasiliensis). The research was in the plant protection laboratory and green house of Sungei Putih Research Centre, at Galang, Deli Serdang district, on July to September 2016. The research used Non-Factorial Completely Random Design (CRD) in consisting 6 treatments, that was A0 : control (+), without liquid smoke, A1 : 0,5% concentrate of liquid smoke, A2 : 1% concentrate of liquid smoke, A3 : 1,5% concentrate of liquid smoke, A4 : 2% concentrate of liquid smoke, A5 : 2,5% concentrate of liquid smoke, and A6 : 0,2 % concentrate of mancozeb content fungicide. The result showed that the application of liquid smoke from coconut shall can obstruct Collectotrichum gloeosporioides pathogen growing as caused of Collectotrichum leaf fall disease on rubber plant (Hevea brasiliensis). The best of attacking intensity obstruction of the Collectotrichum gloeosporioides pathogen showed at 2,5% concentrate of liquid smoke treatment (A5) in green house experiment. The other of that, at the in vitro experiment, Collectotrichum gloeosporioides pathogen growness obstructed by 1,5% concentrate of liquid smoke treatment (A3).