Influence of modification of growth medium and using of plant growth regulator to enhance growing power and growth of True Seed of Shallot (TSS)

Red onion is one of the main horticultural commodities in Indonesia. Generally red onion is cultivated by using tuber as a source of seeds. The weakness of the use of tuber as a source of seeds, besides the high cost also the quality of seed is less well guaranteed because it almost always carries of the pathogen disease. To overcome the weakness of red onion cultivation with tuber, the alternative is the cultivation with the seed of botani (True Seed of Shallot/TSS). The weakness of botanical seeds as a source of seed is the low germination/growing power. Therefore, to solve the problem of red onion cultivation with TSS, has been done research on the modification of growing medium and giving of plant growth regulator to produce seeds of red onion origin of botanical seed (TSS). Botanical seeds (TSS) of red onion treated with coconut water and seeded on mixed soil + compost medium, soil + husk charcoal and soil + compost + chaff charcoal produce growing percentage and vegetative growth of optimum seeds. Based on the results of this study, coconut water can be used as a plant growth regulator in red onion seeding by using botanical seed (TSS).