RESPONSE OF ONION AND SHALLOT TO ORGANIC FERTILIZER ON BRIS (RUDUA SERIES) SOIL IN MALAYSIA

A. Zaharah, P. Vimala, R. Siti Zainab, H. Salbiah
Field studies were conducted to evaluate the effects of palm oil mill effluent (POME) as an organic fertilizer on the yield of onion and shallot cultivated on bris soil. Four levels of POME (0, 32, 64, and 96 t/ha) were tested. The compound fertilizer (N:P:K:Mg = 12:12:17:2) at 1.5 t/ha was given in three split applications (basal and 4 and 6 weeks after transplanting).

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.

Zaharah, A., Vimala, P., Siti Zainab, R. and Salbiah, H. (1994). RESPONSE OF ONION AND SHALLOT TO ORGANIC FERTILIZER ON BRIS (RUDUA SERIES) SOIL IN MALAYSIA. Acta Hortic. 358, 429-433
DOI: 10.17660/ActaHortic.1994.358.70
https://doi.org/10.17660/ActaHortic.1994.358.70

Acta Horticulturae