Composition of Macro and Micro Fertilizers in Zeoponics for Growing Variegated Ornamental Plants

Abstract

A suitable plant growth medium (PGM) is essential in cultivating ornamental plants, which are raised mainly for their high aesthetic value. For instance, variegated plants are hugely popular among ornamental plant lovers because they exhibit an array of leaf pattern, forms, and colors. The problem, however, is that their unique colors and patterns likely change over time. In this regard, zeoponic PGM, made from zeolite mixed with other materials such as compost and cocopeat, and macro- and micronutrients offers a viable solution. Thus, this study aimed to find the appropriate kind and dosage of fertilizers making up the proper formulation of the PGM to support the desired growth and lasting appearance of variegated plants. Pot trials in the research greenhouse were conducted in a two factor, completely randomized design (CRD). The first factor was plant type - Epipremnum aureum variegata and Peperomia obtusifolia variegata. The second factor was a combination of kind and dosage of macro- and micronutrients those were added to the zeoponics. Plant growth and aestetic parameters were observed, and the chemical properties of the PGM were analyzed. The results showed that the best micro fertilizer and dosage for Epipremnum aureum variegata was Fe-EDTA 0.00096 g/l + Cu-EDTA 0.00067 g/l + Mn-EDTA 0.00269 g/l + Zn-EDTA 0.00167 g/l, while for Peperomia obtusifolia variegata, the best fertilizer dosage was Fe-EDTA 0.00038 g/l + Cu-EDTA 0.00027 g/l + Mn-EDTA 0.00108 g/l + Zn-EDTA 0.00067 g/l.