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The Feasibility of Crop Diversification in Rice Based Cropping Systems in Haor Ecosystem

J. Shopan
Bangladesh Rice Research Institute, Gazipur

M. S. U. Bhuiya
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202

M. K. Hasan
Department of Agricultural Chemistry, Sylhet Agricultural University, Sylhet-3100,

Abstract/ Executive Summary:

The objective of the study was to determine the feasibility of growing short duration vegetable and oil crops in seasonal fallow of Boro rice-Fallow-Fallow cropping patterns in terms of both combined yields and economic performance. Six short duration vegetables such as potato, red amaranth, stem amaranth, spinach, radish and mustard were the first crops and Boro rice (var. BRRI dhan28) was the second crop. Thus there were six types of cropping patterns Potato-Boro rice- Seasonal flood, Red amaranth-Boro rice- Seasonal flood, Stem amaranth-Boro rice- Seasonal flood, Spinach-Boro rice- Seasonal flood, Radish-Boro rice- Seasonal flood and Musturd-Boro rice- Seasonal flood. The agronomic productivity (rice equivalent yield t ha^-1) of the cropping patterns Potato-Boro rice- Seasonal flood, Red amaranth-Boro rice- Seasonal flood, Stem amarnth-Boro rice- Seasonal flood, Spinach-Boro rice- Seasonal flood, Radish-Boro rice- Seasonal flood and Mustard-Boro rice- Seasonal flood were 22.42, 15.47, 17.04, 17.79, 22.11 and 11.56 t ha^-1, respectively with economic productivity (gross return Tk ha^-1) of 364162.50, 251712.50, 276900.00, 292012.50, 359125.00 and 187850.00, respectively and the benefit cost ratio of 1.88, 1.52, 1.65, 1.69, 1.75 and 1.12, respectively From diversification practices in Dingaputa haor ecosystem Potato-Boro rice- Seasonal flood and Radish-Boro rice- Seasonal flood cropping patterns were found to be the most dominant cropping patterns in economic terms.

Keywords: Crop diversification, Cropping system, Haor, Seasonal flood

Location: Mohangonj upazila of Netrakona district

Start Date: 00-10-2010

End Date: 31-05-2011

Program Area: Farming System

Commodity: Rice

Objectives:

To explore the possibility of growing short duration vegetable and oil crop before Boro rice of Fallow- Boro rice - Seasonal flood water.
To evaluate the agro-economic performance of the designed cropping patterns.
To assess farmers’ response on the acceptability of designed patterns of the trial.

Methodology:

The experiment was carried out at Purbo Tethulia situated in the eastern side of Mohangonj upazila of Netrakona district, a village and Ward of Tethulia union in Dingaputa haor, during the period from October 2010 to May 2011. The experimental site was a representative of flood prone haor area which covers 932793 ha i.e. about 6.5% area of Bangladesh. Experimental treatment consisted of six designed patterns for diversification of rice cropping systems. The patterns were designed against Fallow- Boro rice- Seasonal flood (in post flood period as shown in Fig. 1) along with crops intervened with underline. The six designed patterns were-

Potato-Boro rice- Seasonal flood
Red amaranth-Boro rice- Seasonal flood
Stem amaranth-Boro rice- Seasonal flood
Spinach-Boro rice- Seasonal flood
Radish-Boro rice- Seasonal flood
Mustard-Boro rice- Seasonal flood

Experiment was laid out in a randomized complete block design with five farmers’ dispersed replications. Layout of the experiment was done on 20 October 2010. There were 30 unit plots of same size. Plot to plot and block to block distances were 0 .75 m and 1.00 m, respectively. The collected data were compiled and tabulated in proper form and subjected for statistical analysis. Data were analyzed using the “Analyses of variance” technique with the help of computer package MSTAT and differences among treatment means were adjudged with Duncan’s Multiple Range Test (DMRT) as outlined by Gomez and Gomez (1984).

Source of Information: J. Bangladesh Agril. Univ. 10(2): 211–216, 2012

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

From the findings of the study it reveals that all the experimental crops were safely harvested due to favorable weather and no occurrence of flash flood indicating that in favorable cropping season, there is an excellent possibility of crop diversification through inclusion of sequential short duration vegetable crops before Boro rice pre-flood and post flood period cropping pattern.

Knowledge Management: Journal