The effects of Arenga wood-fiber size and nutrition concentration on growth and yield of substrate hydroponic Kailan (Brassica alboglabra)

Abstract

This research objective was to determine the effects of interaction between Arenga wood-fiber size and nutrition concentration on growth and yield of substrate hydroponic kailan. The research was conducted at Greenhouse of Agriculture Faculty, Sebelas Maret University, Surakarta from March to May 2018. The study was designed as a completely randomized design with 2 factors. The first factor was substrate size (fiber size 1, 2 and 3 cm) and sand; the second factor was nutrition concentration (1.3, 2.3, and 4.3 mS/cm). Data analysis was based on F test at 5% level and continued with Duncan's Multiple Range Test. The observed variables were root length, root volume, number of leaves, chlorophyll content, leave area, stems diameter, fresh weight, and dry weight. The results showed that the substrate affected all plant variables except for root length. Nutrition has a significant effect on plant height and number of leaves. Fiber size 1 cm generated the highest yield, plant height, leaf number, chlorophyll content, stem diameter, fresh weight, and dry weight of plant.