This study aims to analyse the growth response of soybean (Glycine max (L.) Merrill) to the treatment of refugia plants and Nano silica fertilizer. The research was conducted at the Unit of Palawija Seed Development and Paddy, Agriculture Office of West Java Province, Plumbon, Cirebon Regency, from December 2018 to May 2019. The materials that were used include soybean varieties Grobogan, sunflowers, Zinnia elegant and marigolds, Nano silica fertilizers and NPK. This study uses a split plot design with the main plot was kind of refugia plants and sub-plots was Nano silica fertilizer concentration. The observed variables included plant height, stem diameter, number of leaves and number of branches, observations were made at the age of 14, 21, 28 and 35 days after planting (dap). The results showed that refugia plants had no effect on soybean growth, while the application of Nano silica fertilizer concentration of 1.75 ml/l and 3.50 ml/l gave the best effect on all components of soybean growth observed.

This study aims to determine the effect of doses of manure and the concentration of organic herbicides on the growth and yield of cucumber (Cucumis sativus L.) cultivars Bhakti. The experimental design used Randomized Complete Block Design (RCBD). This experiment consisted of 12 combinations of manure dosage treatment and concentrations of organic herbicides. Each of which was repeated three times, so that there were 36 experimental plots. The combination of treatments tested in the field was manure 5 t/h, 10 t/ha, 15 t/ha, organic herbicide 0 g/l, 100 g/l, 200 g/l, 300 g/l. The results showed that there was a significant effect of doses of manure and organic herbicide concentrations on plant height of 14 DAP, 21 DAP and 28 DAP, number of leaves aged 21 DAP and 28 DAP, number of fruits per plant and per plot, fruit length per plant, fruit diameter per plant, fruit weight per plant and per plot (14,46 kg/plot), and wet weed per plot. The best results were shown in the combination treatment K (15 t/ha manure and organic herbicide 200 g/l) with an average yield of 14.46 kg/plot (36.15 t/ha).