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Comparing Yield and Yield Attributes of Three Rice Varieties Considering Different Plant Population

M. Shahaduzzaman
Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur

M.N. Bari
Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur

B.K. Biswas
Department of Agricultural Extension, Khamarbari, Dhaka.

R.C. Dey
Department of Agricultural Extension, Khamarbari, Dhaka.

F. Ahmed
Department of Agricultural Extension, Khamarbari, Dhaka.

Abstract/ Executive Summary:

A field experiment was conducted at the experimental farm of Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur during boro season (2009-10) to compare yield and yield attributes of three rice varieties viz. BRRI dhan 29, hybrid IR68877H and IR69690H with five planting densities which constituted the experimental variables as T₁; IR68877H at 27 hills m^-2 (25 cm x15 cm), T₂; IR69690H at 27 hills m^-2(25 cm x15 cm), T₃; BRRI dhan 29 at 27 hills m^-2 (25 cm x15 cm), T₄; BRRI dhan 29 at 40 hills m^-2 (25 cm x10 cm), T₅ ; BRRI dhan 29 at 50 hills m^-2 (20 cm x10 cm), T₆ ; BRRI dhan 29 at 67 hills m^-2 (15 cm x10 cm) and T₇; BRRI dhan 29 at 111 hills m^-2 (15 cm x 6cm). The experiment was laid out in a complete block design (RCBD) with three replications where unit plots were 5m x 3m with a distance of plot to plot 1m and block to block 1.5 m. At maturity, 10 plants were uprooted to measure yield contributing characters and from center of each plot a 5 m²area was harvested to determine yield. Data revealed that among the three rice varieties, the hybrid IR69690H produced the highest yield of 5667 kg ha^-1 at standard population density (27 hills m^-2) and it was followed closely by BRRI dhan 29 with 5417 kg ha^-1 (27 hills m^-2). Results further revealed that BRRI dhan 29 at a population density of 40 hills m^-2 produced grain yield of 5993 kg ha^-1which was the highest among all the treatments.

Keywords: Yield attributes, Rice varieties, Planting density, Yield

Location: Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur

Start Date: 00-12-2009

End Date: 00-04-2010

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

1. To examine the performance of BRRIdhan 29 which is the most popular and widely cultivated boro season rice variety at a range of population densities in comparison with hybrid rice to compare yield and yield attributes.

Methodology:

The field experiment was conducted at the experimental farm of Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur under wet land condition during boro season (2009-10) to compare yield and yield attributes of three rice varieties considering different plant population. The rice varieties were BRRI dhan 29, hybrid IR68877H and IR69690H and five planting densities constituted the experimental variables as T₁; IR68877H at 27 hills m^-2 (25 cm x15 cm), T₂; IR69690H at 27 hills m^-2 (25 cm x15 cm), T₃; BRRI dhan 29 at 27 hills m^-2 (25 cm x15 cm), T₄; BRRI dhan 29 at 40 hills m^-2 (25 cm x10 cm), T₅ ; BRRI dhan 29 at 50 hills m^-2 (20 cm x10 cm), T₆ ; BRRI dhan 29 at 67 hills m^-2 (15 cm x10 cm) and T₇; BRRI dhan 29 at 111 hills m^-2 (15 cm x 6 cm). The soil was silty clay of shallow red brown terrace type under Salna Series of Madhupur Tract containing a pH of 6.5. The experiment was laid out in a complete block design (RCBD) with three replications where unit plots were 5m x 3m with a distance of plot to plot 1m and block to block 1.5 m. At the time of final land preparation cowdung was added @ 10 t ha^-1and K, S and Zn were applied @ 60, 12 and 3 kg ha^-1 respectively. The rates of N were 124, 184, 230, 308 and 510 for the plant population of 27, 40, 50, 67 and 111 hills m^-2respectively and it was applied in four equal installments at basal, maximum tillering, panicle initiation and flowering stage. Thirty five days old one rice seedling was transplanted in each hill and gap filling was done after two weeks of transplanting with the same aged seedlings. Adequate intercultural practices were done to keep weed, insect-pest infestation at minimum level and a 2 to 4 cm standing water was maintained in the field until the varieties attained at hard dough stage. At maturity, 10 plant samples were uprooted to measure yield contributing characters and from center of each plot a 5 m²area was harvested to determine yield. Data recorded for different parameters were put to analysis of variance (ANOVA) and the means were compared using the Least Significant Different (LSD) test.

Source of Information: J. Agrofor. Environ. 8 (1): 29-31, 2014; ISSN 1995-6983

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Data revealed that among the three rice varieties, the hybrid IR69690H produced the highest yield of 5667 kg ha^-1 at standard population density (27 hills m^-2) and it was followed closely by BRRI dhan 29 with 5417 kg ha^-1 (27 hills m^-2). Results further revealed that BRRI dhan 29 at a population density of 40 hills m^-2 produced grain yield of 5993 kg ha^-1which was the highest among all the treatments.

Knowledge Management: Journal