Development of Seed Pelleting with Essential Oils for Organic Lettuce Seeds

Abstract

Studies on the concentrations of four essential oils including: moringa seed, neem seed, black cumin seed, and anise seeds and an appropriate lettuce seed pelleting for plant protection against P. carotovorum subsp. carotovorum T-TU021, which is a seed born pathogen and increases seed size by pelleting was performed. The experiment arranged by CRD. It was found that an extract from the essential oils at concentrations of 0.15 and 0.2% were effective in inhibiting the growth of strain T-TU021 with a diameter of inhibition zone was 1.72 and 1.81 cm, respectively. At the lowest concentration of the best available (0.15%) of black cumin, the seed pelleting in Chitosan-Lignosulphonate Polymer (CLP) binder was most effective in promoting seedling growth.
The percentage of seed germination, plant/seedling height and root length were 86.10%, 4.07, and 3.18 centimeters, respectively, and rotten seeds were reduced (15.68%). The knowledge from this research could be applied as a model for deployment in developing to other organic seeds and quality industrial-scale seed production further.