Effect of planting pattern on shading and phytoplankton photosynthesis in Bangladesh rice-fish farms

Mustow, S.E. and Nath, A. and Tollervey, A.G. and Sannarm, G. (1996) Effect of planting pattern on shading and phytoplankton photosynthesis in Bangladesh rice-fish farms. Naga, the ICLARM Quarterly, 19(4), pp. 23-26.

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Abstract

In the present study, a Border Planting (BP) pattern recommended by the Bangladesh Agricultural Research Council was tested against Regular Planting (RP) to assess the effect, if any, on gross phytoplankton photosynthesis and shading. A Wide Planting (WP) pattern was also included in the trial, as an extreme case, to assess the level of photosynthesis that might be obtained if some of the rice yield was sacrificed. Three rice-planting treatments, each with four replicates, using the rice variety BR16, were undertaken: (1) RP, 26 cm between rows N to S and E to W; (2) BP, 20 cm between rows N to S and alternately 21 cm and 36 cm between rows E, to W; and (3) WP, 66 cm between rows N to S and E to W. BP showed no advantage compared to RP, possibly because the rice variety used was short and thus produced relatively little shading. WP did show a benefit for phytoplankton photosynthesis, but this may not generate an increase in fish yield sufficient to justify the negative impact of rice production.

Item Type: Article
Title: Effect of planting pattern on shading and phytoplankton photosynthesis in Bangladesh rice-fish farms
Personal Creator/Author:
CreatorsEmail
Mustow, S.E.
Nath, A.
Tollervey, A.G.
Sannarm, G.
Journal or Publication Title: Naga, the ICLARM Quarterly
Volume: 19
Number: 4
Page Range: pp. 23-26
Date: 1996
ISSN: 0116-290X
Issuing Agency: WorldFish Center
Uncontrolled Keywords: Planting; Rice culture; Phytoplankton; Photosynthesis; Shading; Rice field aquaculture; Integrated farming; Bangladesh
Subjects: Aquaculture
Item ID: 9378
Depositing User: Mr William Ko
Date Deposited: 23 Oct 2012 09:05
Last Modified: 23 Oct 2012 09:05
URI: http://aquaticcommons.org/id/eprint/9378

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