Effects of various stocking density of silver barb (Barbodes gonionotus) on performance of rice in integrated rice-fish system, in Teluk Intan, Perak, Malaysia
2007
Saputra, B.S.A., Universiti Putra Malaysia, 43400 Serdang, Selangor (Malaysia). Crop Science Dept. | Muhammad, R. | Jambari, Hj. Ali | Kusnan, M., University Putra Malaysia, 43400 Serdang, Selangor (Malaysia). Biology Dept. | Sinniah, U.R., Universiti Putra Malaysia, 43400 Serdang, Selangor (Malaysia). Crop Science Dept.
A field experiment was carried out to determine the performance of rice as a result of integrating silver barb at various stocking density. The experiment was conducted at rice field in Labu-Kubong-Sungai Manik, Teluk Intan, Perak. The aim of this study was to reduce overuse of pesticides by using fingerlings act as a biocontrol agent in rice field. Fingerlings of about 5-8 cm long were introduced into plots of 20 x 15 cm at the rate of 0,4000,8000 and 12,000/ha at 25 days after direct-seeding and the treatments were replicated eight times. Paddy cultivar MR219 was broadcasted at a sowing rate of 80 kg/ha. A small furrow of 100 cm with width and 60 cm deep was dug along edge for the fishes to seek refuge during harsh condition.Fishes were not given additional feed till the end of the trial. Plant height, number tillers/sq.m., panicle/sq. m., number of grains/panicle, weight of 1000 grains and yield were determined at harvest. The results showed that plant height was not affected by the treatment. Number of tillers decreased significantly (P0.05) between control and the treated plots. However, the decline in panicle/sq m was not significant. There was no significant difference between the treatments for number of grains per panicle and weight of 1000 grains. It is important to note that integrating fish with rice did not result in significant difference in yield. Based on the results of this study, integration on fish with rice can be advantageous as it does not affect the yield but can provide additional income for farmers. It is however, important to ensure that the cost of fingerlings does not exceed the cost of pesticides, as the idea to use the fingerlings as biocontrol agents and at the same time generate extra income for the farmer.
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