This study aims to determine the effect of 4 doses of urea fertilizer on production and growth of Odot grass (Pennisetum Purpureum cv. Mott). The experimental design used was a completely randomized design (CRD) pattern in line with 4 treatments and each treatment consisted of 5 replications. The treatment used is Control (P0), urea at a dose of 100 kg/ha (P1), urea at a dose of 150 kg/ha (P2), urea at a dose of 200 kg/ha (P3). The parameters observed were number of tillers, stem length, leaf length, grass height and grass production. The results of statistical analysis showed that the treatment of urea fertilizer had no significant effect on plant height. The treatment of urea fertilizer had a significant effect (P<0.05) on number of tillers, stem length, leaf length and grass production. It can be concluded that the administration of urea fertilizer can increase the number of tillers, stem length, leaf length and odot grass production compared to odot grass that is not given urea fertilizer. Keywords: Urea, Fertilizer, Growth, Production, Pennisetum purpureum cv Mott

STUDY OF SPRAY DRYING PROCESS FOR THE PRODUCTION OF PETROLEUM CRACKING CATALYST. Catalyst for the hydrocarbon fluid catalytic cracking (FCC) process consists of zeolite, matrix, fillers, and binders. The FCC catalyst has a microsphere form (10-120 µm), and can be produced by spray drying. Operating conditions of spray drying affect the characteristics of the microspheres FCC catalyst. The composition slurry (24% by weight) is 27% (by weight) of zeolite NaY, 33% (by weight) of Belitung kaolin, 20% (by weight) of silica alumina, 20% (by weight) of silica sol. The slurry is fed to spray dryer with constant air temperature of 190 o C, ratio of atomizing air flow to slurry feed rate between 0.75:1 to 1:1, hot air flow rate between 0.2-0.3 m 3 /min, and slurry feed rate between 15-20 mL/min. Catalyst particle size distribution produced is in the range of 0.3752-161.1770 µm. Angle of repose of the dry product isin the 41.45-49.00 range, which translates to a flowability between passable and poor. Statistical treatment of experimental data by ANOVA method indicates that hot air velocity and interaction between the atomizing air to slurry feed rate ratio and the hot air velocity significantly affect the average particle size. The interaction between the atomizing air to slurry feed ratio with hot air velocity significantly affect particle size distribution as well.