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Crop and Water Management for Crop Intensification in the Coastal Region of Bangladesh (polder 43/2f)-2012

Dr Sanjida Parveen Ritu
SSO
Irrigation and Water Management Division, BRRI, Gazipur-1701, Bangladesh

Dr M A Rashid
CSO and Head
Irrigation and Water Management Division, BRRI, Gazipur-1701, Bangladesh.

Abstract/ Executive Summary:

A field experiment was conducted to increase cropping system production and profitability. The methods were followed as increasing cropping intensity (triple cropping: Aus-Aman-Boro, Aus-Aman-Rabi), use of improved rice (optimum duration for triple cropping, stress tolerance, high yielding) and Rabi varieties, and improved agronomic management and drainage to facilitate early Rabi establishment. BRRI dhan53 can be grown in Aus-Aman-Rabi pattern for higher production and to facilitate early Rabi establishment. Although BRRI dhan53 matured later than that of BRRI dhan33, but still there was enough time to establish Rabi crop (after 30 December). The growth duration and yield of BRRI dhan53 was higher than its normal limit and BRRI dhan54 had shorter growth duration than normal. So, these two varieties need to be tested in the next year to make a final conclusion. Rabi crops can be grown in polder 43/2F under undrained or unmulched condition if sown in January. To achieve better establishment and better yield of mungbean it needs to be sown early and when the soil moisture is optimum. So all the rabi crops can be established earlier with proper drainage which needs further study for confirmation.

Keywords: Polder, Coastal area, EC, Crop intensification

Location: Polder 43/2F, Bazarkhali, Borguna

Start Date:

End Date:

Program Area: Crop-Soil-Water Management

Commodity: Water productivity

Objectives:

To increase cropping system production and profitability.

Methodology:

Cropping intensity was increased by introducing the cropping pattern of Aus-Aman-Boro and Aus-Aman-Rabi. The following characteristics of rice varieties and rabi varieties were considered as optimum duration for triple cropping, stress tolerance and high yielding. Improved agronomic management was applied. Drainage facility was developed by excavation of drain for early Rabi establishment. Mulching was done for rabi crops for conserving soil moisture. Sesame, mungbean was established as rabi crop.

Source of Information: Proceedings of the BRRI Annual Internal Review for 2012, BRRI, Gazipur-1701, Bangladesh

Article Link (Online Journal):

Funding Source:

1.

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The Aman variety of shortest growth duration, BRRI dhan33 produced the lowest yield (3.8 t ha^-1) compared to the other two varieties. BRRI dhan53 and BRRI dhan54 showed the similar yield level of about 4.3 t ha^-1. Yield of rabi crops such as maize, sunflower and mungbean were established in drained and undrained plots with mulched and unmulched conditions. Maize produced higher yield in mulched plots in both drained and undrained conditions though the variation is very less. Maize yield varied from 9.18 to 10.03 t ha^-1 among the drainage and mulched treatments. Similarly Sunflower also produced similar yield among the drained and mulched treatments (3.80 to 3.89 t ha^-1). Mungbean also followed the same trend (0,32 to 0.37 t ha^-1). Yield of mungbean was very low than the normal condition, because the emergence was low as the soil moisture was less due to late establishment. These results indicated that the drained and undrained plots moisture was almost similar and the mulching could not play effective role to conserve moisture in the soil profile.

Knowledge Management: Report/Proceedings