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Row Spacing Effect on the Yield and Yield Components of T. Aus Rice Cv. Br26 (shraboni)

M. Abuyusuf
Department of Agronomy, Patuakhali Science and Technology University, Dumki, Patuakhali

M. Ahmed
Department of Agronomy, Bangladesh Agricultural University, Mymensiongh

Abstract/ Executive Summary:

The performance of T. Aus rice cv. BR26(Shraboni) under five row spacing viz. 35cm, 30cm, 25cm, 20cm and 15cm with hill spacing of 15cm was studied at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh, during the period from March 2006 to June 2006 . Row spacing had significant effect on plant height, number of effective tiller hill^-1, number of non-effective tiller hill^-1, panicle length, number of total spikelet panicle^-1, grain yield, straw yield, biological yield and harvest index. The widest row spacing 35cm produced the highest number of sterile spikelet panicle^-1(74.75), total number of spikelet panicle^-1(103.00), straw yield (13.72 t ha^-1) and biological yield(17.48 t ha^-1) where as the closer row spacing 15cm produced lowest panicle length(19.56cm) and total number of spikelet panicle-1(85.00).The row spacing of 25 cm produced higher plant height(110.20cm), number of effective tiller hill^-1(10.34), total number of tiller hill^-1(15.42), panicle length(23.91cm), number of grain pnicle^-1(62.83),grain yield(4.35t ha^-1) and harvest index(28.43%). From the experiment, it is concluded that a row spacing of 25cm with 15cm distance between hills may be considered to be optimum to produce better grain yield for transplanted aus rice cv. BR 26 (Shraboni).

Keywords: Aus rice, Spacing, Grain yield

Location: Agronomy Field Laboratory, Bangladesh Agricultural University

Start Date: 00-03-2006

End Date: 00-06-2006

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

1. To estimate the effect of row spacing on the yield and yield components of T. aus rice cv. BR26 (Shraboni).

Methodology:

The experimental area experiences a sub tropical climate and belonged to Old Brahmaputra Floodplain. The land was medium high having sandy loam soil and belonged to Sonatala series under the non calcareous dark grey floodplain soil. The treatment consisted of five row spacing: 35cm, 30cm, 25cm, 20cm and 15cm with 15cm hill apart. The experiment was laid out in a randomized complete block design with four replications. The area of each plot was 10 m² (4.0 m × 2.5 m). The total numbers of plots were 20. The land was fertilized with 150, 100, 70, 60 and 10 kg ha^-1urea, triple super phosphate (TSP), muriate of potash (MOP),Gypsum and Zinc sulphate, respectively. The total amount of TSP, MOP, Gypsum, Zinc sulphate and one third of urea were applied at final land preparation as basal dose. Then one third of urea was topdressed at 21 days after transplanting and then rest amount of urea was applied at 35 days after transplanting. Thirty-five day’s old seedlings were transplanted on the well puddle experimental plots on 27 March 2006 at 15cm hill apart and maintaining five different row spacing as per experimental treatments. Different intercultural operations such as gap filling, weeding, irrigation, pesticides application were done as and when necessary. The crop was harvested plot wise at full maturity on 28 June 2006.The data on crop characters were recorded at harvest. The yield contributing characters were recorded from five randomly selected hills in each plot and their mean values were determined. The yields of grains and straw were recorded then finally converted to hectare basis. The data were collected on the following crop parameters such as plant height(cm), total number of tillers hill-1, number of effective tillers hill-1, number of non- effective tillers hill^-1, number of total spikelet panicle^-1, panicle length (cm), number of grains panicle^-1, number of sterile spikelet panicle^-1, weight of 1000-grains (g), grain yield (t ha^-1), straw yield (t ha^-1), biological yield (t ha^-1) and harvest index (%).The collected data were analyzed statistically using the analysis of variance technique and the significance of mean differences were adjusting by Least Significant Differences (LSD) test.

Source of Information: J. Agrofor. Environ. 1(2): 125-127, 2007; ISSN 1995-6983

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Analysis of variance revealed that row spacing greatly influenced the yield of straw. The highest straw yield (13.72 t ha^-1) was obtained at 35 cm row spacing followed by 30cm (12.93 t ha^-1) row spacing and the lowest straw yield (10.95 t ha^-1) was obtained from the row spacing of 25cm

Knowledge Management: Journal