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Effect of Variety, Row Arrangement and Nitrogen Dose on the Performance of Transplant Aman Rice

A. ALAM
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

S.K. Paul
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

M.A.R. Sarkar
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

S.M.M. Islam
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

Abstract/ Executive Summary:

The experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh from July to December 2013 to observe the effect of variety, row arrangement and nitrogen dose on the performance of transplant Aman rice. The experiment comprised two varieties viz. BRRI dhan51 and BRRI dhan52, three row arrangements viz. single, double and triple row arrangement and four nitrogen doses viz. 0, 45, 60 and 75 kg N ha^-1. The experiment was laid out in a randomized complete block design with three replications. Yield components and yield of transplant Aman rice were significantly influenced by variety, row arrangement, nitrogen dose and their interactions. BRRI dhan52 produced higher number effective tillers hill^-1(8.52), grains panicle^-1(112.14), 1000-grain weight (26.99 g) and grain yield (4.85 t ha^-1) compared to BRRI dhan51. The highest number of effective tillers hill^-1(9.64), grains panicle^-l(116.92) and grain yield (4.73 t ha^-1) were obtained in double row arrangement compared to other row arrangements. The lowest grain yield (4.61 t ha^-1) was obtained in triple row arrangement. Higher dose of nitrogen 75 kg N ha^-1produced the highest number of effective tillers hill^-1(9.22), number of grains panicle^-1(116.14) and the highest grain yield (4.99 t ha^-1) which was as good as 60 kg N ha^-1and the lowest values was obtained in control plot. Among the treatment combinations the highest grain yield (5.76 t ha^-1) was obtained from BRRI dhan52 transplanted in double row arrangement fertilized with 75 kg N ha^-1. So, cultivation of BRRI dhan52 in double row fertilized with 75 kg N ha^-1is the promising technique to obtain the highest grain yield.

Keywords: Aman rice, Variety, Row arrangement, Nitrogen dose, Yield

Location: Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh

Start Date: 00-06-2013

End Date: 00-12-2013

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

To achieve the appropriate variety, row arrangement and nitrogen dose for maximization of rice yield

Methodology:

The experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during period from June 2013 to December 2013. The experimental site belongs to the Sonatola Soil Series of Old Brahmaputa Floodplain (AEZ 9) having non calcareous dark grey floodplain soil. The land was medium high with sandy loam texture having pH 5.9-6.5. The experiment comprised two varieties of transplant Aman rice viz. BRRI dhan51 and BRRI dhan52; three row arrangements viz. single row (row spacing 25 cm), double row (row spacing 25-10-25 cm) and triple row (row spacing 25-10-10-25 cm) arrangement and four nitrogen doses viz. 0, 45, 60 and 75 kg N ha^-1. The experiment was laid out in a randomized complete block design with three replications. The size of each unit plot was 2.5 m × 2.0 m. Distance maintained between unit plots and replications were 0.75 m and 1 m, respectively. Seedlings were raised in well- prepared seedbed and transplanted in the main field as per experimental treatments on 5 August 2013. The experimental plots were fertilized by TSP (Triple Super Phosphate), MoP (Muriate of Potash), Gypsum, and ZnSO₄ during the final land preparation at the rates of 167, 62, 80 and 13 kg ha^-1. Only urea was applied as top dressing in three equal splits at 15, 30 and 45 days after transplanting (DAT). Weeding, supplemental irrigation, drainage and other intercultural operation were done as per requirements. The crop was harvested at full maturity (when 90% of the grain became golden in color) on 15 and 18 December 2013. Before harvesting five hills from each unit plot (excluding boarder rows and central 1m² area) were randomly selected to record data on cop characters and yield components. The central 1 m × 1 m area was harvested to record data on grain and straw yields. The harvested crop was threshed by pedal thresher and the fresh weight of grain and straw were recorded plot-wise. The grains were cleaned and dried to a moisture content of 14%. Straws were also dried properly. Finally, grain and straw yields plot^-1 were recorded and converted to t ha^-1. The recorded data analyzed statistically using Analysis of variance with the help of computer package, MSTAT. The mean differences among the treatment means were adjudged by Duncan’s Multiple Range Test.

Source of Information: Int. J. Sustain. Crop Prod. 9(2):7-16, (2014)

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The results revealed that BRRI dhan52 was superior to BRRI dhan51 in terms of grain yield. Transplant Aman rice transplanted in double row arrangement gave the highest yield compared to single and triple row arrangement. Application of 75 kg N ha^-1 produced the highest grain yield which was as good as 60 kg N ha^-1. Among the treatment combinations the highest grain yield was obtained from BRRI dhan52 in double row arrangement with 75 kg N ha^-1. From the study it can be concluded that BRRI dhan52 cultivated in double row arrangement fertilized with 75 kg N ha^-1 appears to be a promising practice to obtain the highest grain yield.

Knowledge Management: Journal