Gagassage Nanaluih De Side, Ida Ayu Widhiantari, Syahroni Hidayat
One of the biggest coconut-producing islands in the region of West Nusa Tenggara is Lombok Island. Naturally, with a high production potential, abundant of waste coconut fiber is generated and not fully utilized. One of the utilizations of coconut fiber waste is by applying cocopeat as a planting medium. From previous research, it was found that the mixture of cocopeat in planting media gave good results for plants. Therefore, optimization of the right planting media mixture by utilizing cocopeat for red spinach (Amaranthus tricolor L) plants in natural greenhouses needs to be done by looking at the response of temperature and humidity parameters. Central Composite Design (CCD) with Response Surface Method is used in this experimental study to observe red spinach plants (Amaranthus tricolor L) utilizing a combination of planting media (cocopeat, husk charcoal, and compost). Automatic Weather Station (AWS) was used for temperature and humidity monitoring in the greenhouse and utilized internet connectivity for interaction between AWS and Ecowitt.net web system. The research was designed to determine the optimum conditions for the mixture of planting media (cocopeat, husk charcoal and compost) through the Response Surface Method (RSM) using a factorial design with 13 treatments with a Central Composite Design (CCD). Tests were conducted to determine the effect of response variables (air temperature and humidity) on cocopeat composition and watering nozzle diameter. The results obtained a 2-factor interaction (2FI) model used to predict the response. The optimal response value was obtained in the condition of a mixture of 20 grams of cocopeat per 100 grams of planting media mixture with watering using a 0.6 mm diameter nozzle resulting in a temperature value of 26.266 ° C and air humidity of 87.881%. © Published under an exclusive license by AIP Publishing.
Agricultural Engineering Study Program, Faculty of Food Technology and Agroindustri, University of Mataram, Jl Majapahit No 62, West Nusa Tenggara, Mataram, 83115, Indonesia; Department of Electrical Engineering, Faculty of Engineering, Universitas Negeri Semarang, Indonesia E11 Building, Sekaran, Gunungpati, Semarang, 50229, Indonesia
