Abstract
An experiment was conducted in five farmers field in Dingaputa haor of Purba Tetulia village, Mohangonj Upazila in Netrakona district during the period from 20 July 2010 to 15 May 2011. 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. DOI: http://dx.doi.org/10.3329/jbau.v10i2.14697 J. Bangladesh Agril. Univ. 10(2): 211-216, 2012
Highlights
Haor is a bowl-shaped depression of typical low land area within the estuarine flood plain of the Surma, Kushiyara, Meghna, Dhenu and Ghorautre rivers
An option to provide the nutritional security of the people in the haor area is to accommodate other crops such as vegetables, pulses, oil crops, etc. within the single rice cropping system being practiced in the area
Results obtained from the present study have been presented and discussed here under different sections comprising yield and yield contributing characters of rice, vegetable yield, rice equivalent yield and economic analysis
Summary
Haor is a bowl-shaped depression of typical low land area within the estuarine flood plain of the Surma, Kushiyara, Meghna, Dhenu and Ghorautre rivers. Within the single rice cropping system being practiced in the area Short duration vegetables such as red amaranth, stem amaranth, spinach, radish, potato, etc., oil crops such as mustard, groundnut, etc. Might be grown before cultivation of Boro rice (LIFCHASA, 2010) in land where flood water recedes fully at the end of October and first week of November. In this land type there is ample scope of crop diversification and crop intensification with the aversion of early flash flood in April. Such pioneering studies were done in the haors of Karimganj and Itna upazila in mid 1998 to 2000 and in Austagram, Nikli, Mithamain, Ajmiriganj and Sulla upazila in 2009 to 2011 by the Bangladesh Agricultural University, Mymemsingh in the name of FSES and ART of HISAL, respectively (Hossain et al, 2010a)
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