| dc.description.abstract | Shallots (Allium ascalonicum L.) are a commodity that has great potential to be
developed in Indonesia. Shallots, which are often used as a basic ingredient in Indonesian
cooking, are a new challenge for onion farmers in Indonesia to increase their production.
The use of soil as a medium for plant cultivation continuously can reduce soil quality and
will affect plant growth. In addition, the use of chemical fertilizers as additional nutrients
can also hurt the soil. By using the composition of planting media, as well as organic
chitosan nutrients, it can increase the production of shallots, while maintaining soil
quality. This research was conducted at the Faculty of Agriculture, University of North
Sumatra with coordinates 3 ° 33'24.9 ° N and 98 ° 39'15.9 ° E, at an altitude of 25 meters
above sea level via GPS (Global Positioning System) starting from February to April
2025. This study used Randomized Complete Block Design (RCBD). The first factor is
the composition of the planting media: soil, soil: chicken manure (3:1), soil: rice husk
(3:1). The second factor is the concentration of chitosan: 0g/L, 2g/L, 4g/L, and 6g/L. The
results showed that the treatment of the composition of the planting media soil 3: chicken
manure 1 had a significant effect on the growth of plant length at 2.5, and 6 WAP, a
significant effect on the number of leaves at 2-6 WAP, and a significant effect on the
production of shallots, namely the diameter of the bulb, the number of bulbs, the fresh
weight of the bulb, and the dry weight of the bulb. While the concentration of chitosan
and the interaction of the composition of the planting media and the concentration of
chitosan had no significant effect on all parameters of plant growth and production | en_US |
