Response of kale (Brassica alboglabra L.) to various planting media and application of liquid inorganic nutrition in DWC (deep water culture) hydroponic systems

Abstract

Kale is one type of leaf vegetables that has a high nutritional content and is in demand by the community, hence has a high selling value. The purpose of this study was to investigate and determine the effect of liquid inorganic nutrients and various planting media in the hydroponic system on the growth and production of kale (Brassica alboglabra L.) plants. The research was conducted from May to July 2017 in Manggala District, Makassar. The trial was set based on split plot design with two factors, liquid inorganic nutrition and various planting media. The main plot was nutrition which consisted of two types, namely AB-Mix nutrition and R-Mix nutrition. Subplot was planting medium with seven treatment combinations namely sand, burnt husk, cocopeat, combination of sand + burnt husk, sand + cocopeat, burnt husk + cocopeat, and sand + burnt husk + cocopeat. The results show that there was a significant interaction between the sand planting media and the R-Mix nutrition which produced the highest average of chlorophyll content (6.57 mg/g). The combination of burnt husk and cocopeat growing media gave yields that tended to be higher compared to other planting media. The R-Mix nutrient treatment gave a higher yield compared to other nutrients in the total chlorophyll observation (6.03 mg/g).

Pelatihan Hidroponik dengan Pemanfaatan Limbah Plastik Sebagai Media Pertumbuhan Tanaman di SMP Negeri 51 Makassar

“…Kemudian, sistem hidroponik yang digunakan pada proses demonstrasi adalah dengan metode deep water culture dan tanaman yang digunakan adalah pakcoy. Sistem hidroponik deep water culture adalah sistem hidroponik sederhana dengan menggunakan prinsip kerja menggantungkan tanaman pada wadah sampai akarnya (Yanti, 2020).…”

New Generation Sustainable Technologies for Soilless Vegetable Production

“…In another case, [47] compared an aquaponic system, incorporating three different hydroponic systems to assess their effect on tomato yield, and morphological and biochemical impact quality, indicating that the choice of system had little effect over those properties, however, the system that incorporated drip irrigation presented slightly better results in terms of higher oxygen radical absorbance capacity, indicating the possibility of producing fruit with a higher health value. A study carried out by [48] analyzed the response of kale to liquid inorganic nutrients and different planting media in a DWC hydroponic system, indicating that there was a high effect over chlorophyll content and yield when using specific combinations of planting media and liquid inorganic nutrients. In another study on kale, [49] analyzed the effect of different nutrient-solution depths on the growth and phytochemicals accumulation in this hydroponic-grown vegetable to assess the issue of low dissolved oxygen in nutrient solution, indicating that there was a positive effect over kale growth when nutrient solution depth increased, where a 2-cm deep nutrient solution could promote kale growth, and 3-cm could have the potential of improving kale quality.…”

Finite Element Simulation Parameter Calibration and Verification for Stem Cutting of Hydroponic Chinese Kale

“…Hydroponic Chinese kale is one of the clean, short-growth cycles, and high-value leaf vegetables widely planted in the southern China facility enterprise [1][2][3]. Currently, fresh hydroponic Chinese kales are harvested by being grabbed out of the pipeline and root cut using the manual method, which leads to high labor intensity and cost problems [4][5][6]. Previous studies on mechanical harvesting for hydroponic Chinese kales mainly focused on the grabbing mechanism [7][8][9][10].…”