Kegiatan pengabdian masyarakat Universitas Merdeka Surabaya penanaman bakau di mangrove Surabaya

This study aims to determine the effect of combined treatment plant extracts bintaro and giving the extract concentration on the mortality of armyworm pests. While the research method used factorial experiments conducted with a completely randomized design (CRD). Treatment Factor I was the Bintaro plant organs extracted consisting of 4 levels consisting of 4 combinations of Bintaro organs and 5 combinations of extract concentrations so that there were 20 combinations and 1 control (without giving the extract) so that a total of 21 treatments were repeated 3 times, a total of 63 units. trial. The experimental unit was using a jar with a height of 6 cm, a diameter of 12.5 cm with 8 instar 1 tails, so it needed 504 instar 1 caterpillars. Caterpillar feed is sunflower leaves that are added / replaced every day. The results showed that there was an insignificant effect of the combination of the treatment of Bintaro plant organ extracts and the concentration of Bintaro plant organ extracts with the mortality rate (%) of armyworms, where observations on days 4, 8, 12 and 16 showed a significant value> 0, 05 with the highest R Square achievement on the 16th day of observation of 0.0675 (6.75%), meaning that only a 6.75% mortality rate (%) of armyworms was affected by the combination of the above treatments. The insignificant effect at all levels of treatment factors was the concentration of Bintaro plant's organ extract (K), but the K5 treatment (12.5% extract concentration) showed a tendency to be better than the K1, K2, K3, and K4 treatments with an R Square value of 0, 418370978 (41.84%) means a number of 41.85% mortality (%) armyworms due to K5 treatment (12.5% extract concentration), the remaining 58.15% due to external factors and insignificant influence at all factor levels treatment of Bintaro plant organ extract (B), but treatment B1 (leaf organ extract) showed a better tendency than treatment B2, B3, and B4 with a significant value of F (0.264002509> 0.05) and R Square of 0.296443348 ( 29.64%).

This study aims to examine the growth and yields of onion resulted by combination of plus organic liquid fertilizer application andleaves truncation technique.Factorial randomized group designwith two factors was used.Factor I istwo levels truncation treatment (P) while factor II is concentration is four levels liquid organic fertilizer (O). Treatment was repeated three times with two (2) samples of plants. Observationincluded plant length, number of tillers, number and weight of tubers. The average top results in treatment group of liquid organic fertilizer was obtained by concentrations of 6 ml (O3), the length of the plant at the age of 56 DAPwas 60.67 cm, number of leaves at the age of 56 DAPwere 82.50 strands, the number of tubers at the end of the observation was 14.42 and tubers weight at the end observation was 229.08 grams. The lowest result in O0 and truncation treatment provides the highest result compared with plant of non-truncation technique withplant length was 59.83 cm (age of 56 DAP), number of leaves was 83.33 strands (age 56 DAP), the number of tubers was 13.67 (end of observations) and the highest tubers weight was of 229.08 grams (end of observation).