Christmas palm is a plant that has high economic value as an ornamental plant and is in great demand. Christmas palm seeds begin to germinate 3-4 weeks after planting, slow germination because of to seeds experiencing physical dormancy. To break dormancy can be done by scarification and immersion GA3. The purpose of this study was to determine the effect of scarification and GA3 on the germination and growth of christmas palm seedlings and the interaction between the two treatments. This research was carried out from December 2017 to March 2018 on experimental Field and Agronomy Laboratory Faculty of Agriculture and Animal Science State Islamic University Sultan Syarif Kasim Riau. The method used Randomized Complete Block Design (RCBD) with two factors and four replications. The first factor was the scarification (control and with scarification) and the second factor is immersion GA3 (0 ppm, 150 ppm, 300 ppm and 450 ppm). The results showed that scarification by means of sandpaper can increase the growth rate and height of the christmas palm plant.The dipping of GA3 with concentration of 450 ppm for 2 hours is the best concentration for growth speed. There was no interaction between scarification and GA3 immersion on all observational parameters both in germination and in the nursery of chritmas palm plants on the land.

This study aims to determine the interaction of the composition of planting media and vermicompost dosage on the growth and yield of lettuce plants. This study is a pot experiment conducted by green house located on Jl. MT. Haryono, Dinoyo Subdistrict, Lowokwaru Subdistrict, Malang with a altitude of ± 550 meters above sea level, the average air temperature ranges from 20 °C - 28 °C, which starts in February to June 2019. The study uses experimental Randomized Block Design (RBD) arranged in factorial and consists of 2 factors. The first factor was the composition of the planting medium consisting of 2 levels, namely M1: Cocopit (55%), Biochar (15%), Sand (30%) and M2: Cocopit (55%), Biochar (30%), Sand (15%) The second factor is the vermicompost dose which consists of five types, namely V1: 50 gram / pot, V2: 100 gram / pot, V3: 150 gram / pot, V4: 200 gram / pot, and V5: 250 gram / pot. Based on the two factors, 10 treatments were obtained and each treatment was repeated 3 times with 5 plant samples per treatment, until a sample of 150 lettuce plants was obtained. The results showed that the composition of the planting medium gave growth and yield of different lettuce plants, where the composition of M1 planting media (cocopeat 55%, 15% biochar and 30% sand) gave the highest growth and yield of plants at the dosage application of 200-250 g / pot while the composition of M2 planting media (55% cocopeat, 30% biochar and 15% sand), gave the highest growth and yield at 150-250 g / pot vermicompost doses. This is caused by the influence of the composition of the planting medium and vermicompost dosage on the total fresh weight of plants, fresh weight of roots and fresh weight economically valuable curly lettuce M2V4 treatment (55% cocopeat growing media, 30% biochar and 15% sand, with vermicompost 200 gram / pot), M2V1 (planting media, 55% cocopeat, 15% biochar and 30% sand, with 50 gram vermicompost / pot dose) and M2V4 (planting media, 55% cocopeat, 30% biochar and 15% sand, with dosage 200 gram vermicompost / pot) with values of 66.06, 6.24 and 61.62 grams giving the highest results. Keywords: planting media composition, vermicompost dosage