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Effects of Spacing on the Performance of Six Hybrid Rice Lines in Boro Season

M.Z. Haque
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202

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

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

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

Abstract/ Executive Summary:

A research work was carried out at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during the period from December 2007 to May 2008 in order to find out the effect of spacing on the performance of hybrid rice lines in boro season. The experiment consisted of six hybrid lines viz. ACI Line1, ACI Line2, ACI Line3, ACI Line4, ACI Line5 and ACI Line6 and three spacings viz. 25 cm × 25 cm, 20 cm × 20 cm and haphazard planting. The experiment was laid out in split-plot design with three replications. The highest number of total tillers hill^-1 (13.90), number of effective tillers hill^-1 (12.83), number of grains panicle^-1(184.28), panicle length (24.86 cm), grain yield (6.66 t ha^-1) and straw yield (7.13 ha^-1) were obtained from ACI Line5. The number of total tillers hill^-1 (13.19), number of effective tillers hill-1 (11.85), number of grains panicle^-1(166.63), grain yield (5.84 t ha^-1) and straw yield (6.35 ha^-1) were highest in spacing 20 cm × 20 cm. No significant effect was noticed due to interaction of hybrid rice line and spacing. Numerically ACI line5 produced more yield at a spacing of 20 cm × 20 cm.

Keywords: Boro rice, ACI Hybrid rice line, Spacing, Grain yield

Location: Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh

Start Date: 00-12-2007

End Date: 00-05-2008

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

1. To see the effects of spacing on the performance of six hybrid rice lines in boro season.

Methodology:

The experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University (BAU), Mymensingh during the period from December 2007 to June 2008. The land was medium high having sandy loam soil and belongs to Sonatola series under the non calcareous dark-grey floodplain soil of Old Brahmaputra floodplain AEZ-9. The experiment consisted of two factor, Spacing viz. 25 cm × 25 cm ; 20 cm × 20 cm and haphazard planting, and Hybrid line viz. ACI Line1; ACI Line2; ACI Line3; ACI Line4; ACI Line5; ACI Line6.The experiment was laid out in a split plot design having hybrid line in the main plot and spacing in the sub-plot with three replications. The unit plot size was 10 m² (4 m × 2.5 m).Well decomposed cowdung was applied in unit plots at the rate of 5 t ha^-1 on 15 January 2007. Fertilizers were applied to the plots at the rate of 308.75, 123.5, 148.2, 83.24and 11.2 kg ha^-1 in the forms of urea, tripple super phosphate, muriate of potash, gypsum and zinc sulphate, respectively. After the emergence of seedlings, gap filling was done. Three weedings were done to control weeds. The crop was harvested at full maturity, the harvested crop was brought to the threshing floor and dried in the sun for three days .The seeds and straw were separated and cleaned .The cleaned seeds were dried in sun for 3-4 consecutive days. The seed yield was adjusted at 12 % moisture level. The data on yield contributing characters were recorded from 5 randomly selected plants from each plot. Seed yield and straw yield were recorded from individual plot and were converted to hectare basis. The data were analyzed statistically using the analysis of variance with the help of computer package MSTAT and mean differences were adjudged by Duncan's Multiple Ranged Test.

Source of Information: J. Agrofor. Environ. 3 (1): 85-88, 2009; ISSN 1995-6983

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

From the results of the present experiment it may be concluded that the hybrid rice ACI line5 may be suggested for cultivation in boro season at spacing of 20 cm × 20 cm to obtain optimum grain yield.

Knowledge Management: Journal