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Effect of Variety and Spacing of Transplanting on the Yield and Yield Components of Boro Rice

Md. Anowerul Islam
Department of Agricultural Extension, Kaliganj, Satkhira-9440, Bangladesh

Md. Faridul Islam
Agronomy Division, Regional Agricultural Research Station, Akbarpur, Moulvibazar-3210, Bangladesh

Jubaidur Rahman
Agronomy Division, Regional Agricultural Research Station, Jamalpur-2000, Bangladesh

Md. Abdur Rahman Sarkar
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

Md. Razibur Rahman
Department of Agricultural Extension, Bagmara, Rajshahi-6250, Bangladesh

Abstract/ Executive Summary:

An experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh, during the period from December 2008 to May 2009 to study the effect of variety and spacing of transplanting on the yield and yield components of Boro rice. The experiment consisted of two variety namely, BRRI dhan28 and BRRI dhan29 and four spacings viz. 25 cm × 10 cm, 25 cm - 15 cm, 25 cm - 20 cm and 25 cm - 25 cm. The experiment was laid out in a randomized complete block design with three replications. Higher grain yield (5.03 t ha-1) was obtained from BRRI dhan29 than from BRRI dhan28 (4.30 t ha-1). Spacing of transplanting at 25 cm × 15 cm gave the highest grain yield (5.39 t ha-1) and the lowest grain yield (4.18 t ha-1 ) was found in 25 cm × 10 cm spacing of transplanting. The highest grain yield (5.95 t ha-1) was found in BRRI dhan29 coupled with 25 cm × 15 cm spacing of transplanting and the lowest grain yield (3.15 t ha1) was found in BRRI dhan28 coupled with 25 cm × 10 cm spacing of transplanting. Performance of BRRI dhan29 was better than that of BRRI dhan28 in the Boro season. Among the different spacings of transplanting, 25 cm × 15 cm gave better performance. Transplanting with 25 cm × 15 cm spacing appeared as the promising practice in Boro rice cultivation in terms of yield.

Keywords: Boro rice, Variety, Spacing, Yield

Location: Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh

Start Date: 00-12-2008

End Date: 00-05-2009

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

The present study was undertaken with the following objectives- to evaluate the performance of two Boro rice varieties, to find out the optimum spacing of transplanting in order to obtain higher yield, and also to find out the effect of interaction among these factors, if any, on yield and yield components of Boro rice.

Methodology:

The experiment was conducted at the Agronomy Field laboratory, Bangladesh Agricultural University, Mymensingh, during the period from January to May 2009. Experimental design The experiment consisted of the following treatments- i) two varieties namely, BRRI dhan28 and BRRI dhan29, ii) four spacings of transplanting viz. 25cm × 10 cm, 25 cm × 15 cm, 25 cm × 20 cm, 25 cm × 25 cm. Randomized complete block design was followed in this experiment with three replications. Each of the replication represented a block in the experiment. Each block was divided into 24 unit plots where 24 treatment combinations were allocated at random. There were 72 unit plots in the experiment. The size of unit plot was 4.0 m × 2.5 m. The distances between blocks and plots were 1 m and 50 cm, respectively.

Variety and cultivation procedure Two rice varieties (BRRI dhan28 and BRRI dhan29) were used as plant material in the experiment. In the experiment, chemical fertilizers i.e. triple superphosphate (76 kg ha-1), muriate of potash (60 kg ha-1), gypsum (50 kg ha-1) and zinc sulphate (10 kg ha-1) were applied at the time of final land preparation. Urea Super Granules (175 kg ha-1) was applied in the middle of 4 hills of two adjacent rows at a time at 15 Days after Transplanting (DAT).

Data collection and analysis Data on individual plant parameters were recorded from five randomly selected hills of each plot and those on seed moisture percentage, grain yield, straw yield, biological yield and harvest index were recorded from the whole plot at harvest. All the collected data were analyzed following the analysis of variance (ANOVA) technique and mean differences were adjudged by Duncan's Multiple Range Test (DMRT) (Gomez & Gomez, 1984) using a computer operated programme namely MSTAT.

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Achievement/Findings:

It can be concluded that the performance of BRRI dhan29 was better than that of BRRI dhan28 in the Boro season. Among the different spacings of transplanting, 25 cm × 15 cm gave better performance. Transplanting with 25 cm × 15 cm spacing appeared as the promising practice in Boro rice cultivation in terms of yield.

Knowledge Management: Journal