Ngabwe, Keese (2026) The Effect of Planting Media Types and Ab Mix Concentrations On The Growth Of Broccoli Microgreens (Brassica Oleracea L.) (Brassica olereceae l.). S1 thesis, UNIVERSITAS SULTAN AGENG TIRTAYASA.

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Abstract

Microgreens are young vegetable seedlings harvested shortly after germination and are rich in nutrients. This study aimed to evaluate the effect of different planting media types and AB-Mix nutrient concentrations on the growth performance of broccoli microgreens. The research was conducted using a completely randomized design (CRD) with two treatment factors: four types of planting media (water, sand, cocopeat, and burnt rice husk) and four concentrations of AB-Mix nutrient solution (0 ppm, 300 ppm, 600 ppm, and 900 ppm), with three replications. Observed parameters included plant height, stem diameter, root length, number of leaves, and germination percentage, measured in the first and second week after sowing. The results showed that both planting media and AB-Mix concentration significantly affected all observed parameters (p < 0.01). The combination of cocopeat media with 600 ppm AB-Mix (M3K3) yielded the best growth performance across all variables. Higher nutrient concentrations beyond 600 ppm tended to reduce plant performance, possibly due to osmotic stress. Cocopeat’s favorable physical properties supported root development, nutrient absorption, and overall vegetative growth. This research concludes that the optimal growth of broccoli microgreens is achieved using cocopeat as the growing medium combined with a 600 ppm AB- Mix nutrient solution. The findings are expected to serve as a reference for sustainable and efficient microgreen cultivation practices, particularly in urban farming systems.

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