Aquaponic refers to any system that combines conventional aquaculture with hydroponics in a symbiotic environment. In this study, catfish was cultured with green cabbage. The aim of this study was to observe catfish growth in aquaponics system. The growth parameters measured included feed consumption (g/day/fish), growth (g), growth rate (%/day), mean metabolic body weight (kg 0.8), metabolic feed intake (g/ kg 0.8 /day), relative growth rate per metabolic weight (g/kg 0.8 /day), relative feeding rate (%BW/day), relative feeding rate per metabolic weight (g/kg 0.8) and feed conversion. Factorial randomized trial was used with two factors namely fish stocking density (P) and plant substrate composition (S) with three replications. Stocking density factor consisted of two treatments which were 75-125 individuals per m 2 (P1) and 126-175 individuals per m 2 (P2). The composition of the substrate included two treatments, namely S1 (70% gravel+30% palm fibres) and S2 (70% pumice+30% palm fibres). The data shown that there is no significant difference of substrate and interaction (stocking density x substrate) factors to the growth of catfish (P>0.05). Whereas, for the treatment of stocking densities, a significant difference (P <0.05) was found on four growth parameters (initial weight, SGR, RGRm and feed consumption).

The objective of this research is to investagate the level of drought resistance of some local corn cultivars from Timor in the germination phase. The single factor study is the genotype of maize origin of Timor which consists of 22 cultivars. The study was arranged in a complete randomized design (RAL) and repeated 3 times. The observed variables were germination (DB) expressed in% and normal dried germination weight (BKKN), expressed in grams. The analysis of heritability values (h2) was measured by comparing the genotypes of the various phenotypes (total). The h2 value was greater than 0.5 indicates a genotype diversity of drought resistance. Furthermore, the drought resistance rating based on DB difference (DB aquades-DBPEG) and BKKN aquades-BKKN PEG (BKKN aquades-PEG) difference. The result of the research shows that the calculation of h2 value of 22 East Maize cultivars on DBPEG and BKKNPEG measurements is 0.721 and 0.938, respectively, which means that there is a diversity of drought resistance of 22 cultivars tested. Muke Merah corn cultivars (flowers) Muke White (flowers), White Malacca 1, White Haikesak, White Tastim, and Red Fatumonas (flowers) have good potencial to be used as ingredients in breeding programs to obtain drought tolerant varieties of maize.