Abstract
The experiment was conducted at Multiplication Testing Site (MLT) Trishal of on-farm research division, Bangladesh Agricultural Research Institute, Mymensingh during 2015-16 and 2016-17 to study the comparative agro-economic performance of four crops pattern for increasing cropping intensity and productivity as compared with existing farmers’ pattern. Four crops pattern (Boro-T.Aus-T.Aman-Mustard) and farmers’ existing pattern (Boro-fallow-T.Aman- fallow) as control were tested. On an average, organic matter 3.94 t ha-1and 2.60 t ha-1 were added to soil in four crops pattern and farmers existing pattern by incorporation of biomass of respective crops.. Two years average results showed that the highest rice equivalent yield (20.63 t ha-1) was obtained from four crops pattern. The highest average gross return and gross margin of the four crops pattern were obtained Tk.359570 and Tk. 170162 ha-1 which were 80 and 207 % higher over farmers’ pattern. Farmers’ practice gave the lower gross return (Tk. 199790 ha-1). The mean marginal benefit cost ratio (MBCR) was found 2.23 which indicated the superiority of four crops pattern over the farmers’ existing pattern. The marginal benefit cost ratio (MBCR) analysis also showed that inclusion of mustard and T.Aus rice in the existing pattern might be profitable and acceptable to the farmers. Nutrient uptake and balance showed that considerable amounts of N, P, K and S were removed by crops every year. However, the N, K and S balances were found negative in all cases but P balance was found positive. From the above result showed that four crops can be grown successfully one after another in sequence of the tested pattern.SAARC J. Agri., 15(2): 103-112 (2017)
Highlights
Bangladesh is a densely populated (1008 per sq. km.) country of the world with an area of 147570 sq. km with population growth rate 1.89 percent (BBS 2015)
There is very little scope of increasing cultivable land but there are some scope of increasing productivity and cropping intensity from existing level of 191 to 300 % or more by improving the present cropping patterns incorporating short duration crops like; mustard, mungbean, potato, T.Aus etc. in the rice based cropping patterns following the modern variety and technologies
Considering the above issues, the present study was undertaken to evaluate the feasibility of increasing cropping intensity and productivity by growing four crops in a year in a same piece of land by incorporating mustard and T.Aus rice in the existing cropping system
Summary
Bangladesh is a densely populated (1008 per sq. km.) country of the world with an area of 147570 sq. km with population growth rate 1.89 percent (BBS 2015). There is very little scope of increasing cultivable land but there are some scope of increasing productivity and cropping intensity from existing level of 191 to 300 % or more by improving the present cropping patterns incorporating short duration crops like; mustard, mungbean, potato, T.Aus etc. With the development of short duration T.Aus and T.Aman rice and mustard varieties opportunities have been created to accommodate four crops in same piece of land in a year. Considering the above issues, the present study was undertaken to evaluate the feasibility of increasing cropping intensity and productivity by growing four crops in a year in a same piece of land by incorporating mustard and T.Aus rice in the existing cropping system
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