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A Comparative Water Management Study for Dry Bed Direct Seeded and Transplanted Rice Cultivation-2008

Dr M A Kashm Khan
SSO
IWMD, BRRI

Dr M A Sattar
CSO and Head
IWMD, BRRI

Abstract/ Executive Summary:

A field experiment was conducted to quantify the total amount of water required for dry bed direct seeded and transplanted method of rice cultivation; and to determine the yield performance of direct seeded and transplanted rice.The experiment was carried out with 4 different water treatments Viz: T₁= standing water, T₂ = irrigation was applied after 3 days of disappearing of standing water, T₃= irrigation was applied after 7 days of disappearing of standing water and T₄= irrigation was applied after 10 days of disappearing of standing water. Two cultivation methods, as M₁= direct seeded and M₂ = transplanted methods were followed. From the above results it can be concluded that direct seeded rice saved 83% water during land preparation. On an average, 34% of water can be saved by dry bed direct seeded rice. Thus dry bed direct seeded rice gave 12.74 percent higher yield than transplanted rice. Finally the results revealed that in all the water treatments, water productivity of dry bed direct seeded rice were higher than that of transplanted rice. It is due to higher yield obtained from direct seeded rice than transplanted rice and less amount of water needed for direct seeded rice compared to transplanted rice.

Keywords: Direct seeded rice, Water productivity,Yield

Location: BRRI farm, Gazipur

Start Date: 01-07-2007

End Date: 30-06-2008

Program Area: Crop-Soil-Water Management

Commodity: Water productivity

Objectives:

To quantify the total amount of water required for dry bed direct seeded and transplanted method of rice cultivation ; and
To determine the yield performance of direct seeded and transplanted rice.

Methodology:

The experiment was conducted at the experimental farm of Bangladesh Rice Research Institute, Gazipur in Boro season 2008. It has been observed that about one third of total water required for rice crop is needed for wet land preparation. Therefore, to save the water from wet land preparation seed was sown in dry bed and one pre- sowing irrigation was applied as the soil was too dry for rice seed germination. The experiment was carried out with 4 different water treatments Viz: T₁= standing water, T₂ = irrigation was applied after 3 days of disappearing of standing water, T₃= irrigation was applied after 7 days of disappearing of standing water and T₄= irrigation was applied after 10 days of disappearing of standing water.Two cultivation methods, as M₁= direct seeded and M₂ = transplanted methods were followed. BRRI recommended fertilizer doses were applied for the experiment. V-Notch was used for measuring the applied water in different treatments.

Source of Information: Proceedings of the BRRI Annual Internal Review, 2008

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The grain yield, straw yield, water productivity and percent of increased yield by direct seeded method over transplanted method were estimated and present in Table 14. The results showed that yield of DSR were 5885, 5530, 4952 and 4857 kg/ha and that of TPR were 5421, 5015, 4239 and 3916 kg/ha in treatments T₁, T₂, T₃ and T₄, respectively. The straw yield of DSR were 7535, 7102, 6389 and 5813 kg/ha and that of TPR were 6069, 6293, 5209 and 4571 kg/ha in treatments T₁, T₂, T₃ and T₄, respectively. Direct seeded rice gave 7.88, 9.31, 17.39 and 19.37 percent higher yield than transplanted rice in treatments T₁, T₂, T₃ and T₄, respectively. Results should that direct seeded rice gave 19.37 percent higher yield than transplanted rice in treatment T₄ followed by 17.39 and 9.31 percent higher yield in treatments T₃ and T₂respectively. On an average, direct seeded rice produced 12.74 percent higher yield than transplanted rice. The water productivity of direct seeded rice were 6.70, 7.35, 10.65 and 16.86 kg/ha/mm in treatments T₁, T₂, T₃and T₄, respectively. For the same water treatments, the water productivity of transplanted rice were 4.51, 4.65, 5.92 and 7.44 kg/ha/mm respectively.

Knowledge Management: Report/Proceedings