Abstract:
Inceptisol Jatinangor West Java soil conditions have a low fertility. Actions that can be made to
improve the soil conditions of Inceptisols are by applying organic fertilizers to improve the
physical, biological, and chemical properties of the soil and adding available nutrients to increase
the quantity of crop yields. The purpose of the study was to determine the concentration of
Azolla pinnata-based biofertilizer that could produce the best results against Azotobacter sp.
population, N-uptake, pH, and yield of pakcoy plant. The research was carried out at the
experimental garden, Faculty of Agriculture, Universitas Padjadjaran, Jatinangor, West Java. The
research design used in the experiment was a Randomized Block Design (RBD) which consisted
of thirteen treatments, namely: control (without the application of Azolla biofertilizer), Azollabased biofertilizer with a concentration of 5 ml L-1, 10 ml L-1, 15 ml L-1, 20 ml L-1, each
concentration treatment was combined with 3 application times, namely 1, 2, and 3 times. The
experimental results showed that the treatment of Azolla-based biofertilizer with a concentration
of 10 ml L-1 with 2 times applications increased the N-uptake, pH, and yield of pakcoy plants
184 g of fresh weight pakcoy/polybag. The population of Azotobacter sp. was not affected by the
application of Azolla pinnata-based biofertilizer. |
