RESPONSE OF ONION AND SHALLOT TO ORGANIC FERTILIZER ON BRIS (RUDUA SERIES) SOIL IN MALAYSIA
Results showed that the yield of onion increased significantly from 0.78 to 7.14 t/ha as the level of POME increased from 0 to 32 t/ha. No significant increase in yield was observed at rates higher than 32 t/ha. The increase in yield was attributed to the increase in number of bulbs formed per unit area and also to the size of the bulb. Similar results were observed with shallot. A yield of 8.66 t/ha was obtained at 96 t/ha POME compared with 7.64, 6.39, and 3.52 t/ha at 64, 32, and 0 t/ha of POME, respectively. The increase in yield was mainly due to the increase in the number of bulbs per unit area and the size of bulb.