EN 
IN
Journal article
Potassium fertilizer increased stalk ethanol production of panicle removed-sweet sorghum (Sorghum bicolor (L.) Moench)
I GUSTI AYU MAS SRI AGUNG I KETUT SARDIANA I Wayan Diara Prof.Ir.I GUSTI MADE OKA NURJAYA.M.Rur.Sc.Ph.D
Volume : 9 Nomor : 12 Published : 2016, December
IOSR-Journal of Agriculture and Veterinary Science (IOSR-JAVS)
Abstrak
Abstract: A field experiment was conducted to increase ethanol production of panicle removed-sweet sorgum stalks by applying potassium fertilizer. This experiment was designed as a randomized complete block with three replicates. The first factor was rate of potassium fertilizer (0, 50, 100 and 150 kg KCl ha-1 ). The second factor was the variety of sweet sorghum (White Local Belu, Numbu, Kawali and Super). Variables measured were harvest age at the stage of 100% flowering, stalk length and diameter, stalk and leaf fresh weight, juice volume, ethanol content and ethanol production. Results showed that potassium fertilizer rates as well as variety significantly (P<0.05) affected all variables measured.There was no interaction effects of the two factors. Potassium fertilizer rate of 100 kg KCl ha-1 and Super variety resulted in the highest ethanol production of 13.29 KL ha-1 and 12.24 KL ha-1of panicle removed-sweet sorghum stalk respectively. Increased rate to 150 kg KCl ha-1 did not increase ethanol production. Ethanol content of White Local Belu variety was significantly lower than that of Super variety but was not different from those of the other two improved varieties (Numbu and Kawali). Keywords: Ethanol, Potassium, Sweet sorghum [Sorghum bicolor (L. ) Moench], Varieties