Optimizing the Propagation of Potato by Stem Cutting using Different Growing Media

Potato (Solanum tuberosum L.) is to the actual optimum productivity up to 40 t ha-1. The biggest
challenge is the unavailability of a strategic horticultural commodity intended for crop production in
Indonesia, essential for food diversification. However, potato productivity in Indonesia is considered low
(15 t ha–1) compared to high-quality potato seeds planted by the farmers. In increasing potato productivity,
innovative technology in potato seed production in tubers or seeds cutting is requisite. This research
investigates the effect of growing media composition on the propagation of stem cutting potato (G0)
planted in the screen house. Conducted in Sumber Brantas Village (1 700 m a.s.l.), Bumiaji Regency, City of
Batu, East Java, Indonesia, this research utilized Randomized Complete Block Design with seven growing
media compositions and four replicates in a micro-cutting planting. The growing mix media composition
contained husk charcoal + cocopeat + bokashi (goat manure) + bokashi (cow manure), and husk charcoal +
cocopeat + bokashi (cow manure) + bokashi (poultry manure) resulted 13.38 stem cutting (G0). The beneficial
roles of bokashi in increasing organic matters concentration in the soil, and it was able to repair air and
groundwater systems that supported plant roots growth and optimum capability to absorb nutrients