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Effect of Spacing on the Growth and Yield of Boro Rice (cv. BRRIdhan 36) Under Aerobic System

M.H. Rashid
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202

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

B.K. Pal
Department of Agricultural Extension Education, Bangladesh Agricultural University, Mymensingh-2202

M.A. Latif
Department of Horticulture, Bangladesh Agricultural University, Mymensingh-2202

H.M. Mishu
Department of Crop Botany, Bangladesh Agricultural University, Mymensingh-2202

Abstract/ Executive Summary:

A field experiment was carried out at the Agronomy Field Laboratory, Department of Agronomy during February to June, 2008 to evaluate the effect of row to row and hill to hill spacing on the yield performance and yield of boro rice cv. BRRI dhan36 under aerobic system of cultivation. The experiment consists of three row to row spacing viz.; 20.0 cm, 25.0 cm and 30.0 cm and five hill to hill spacings viz. 2.5 cm, 5.0 cm, 10.0 cm, 15.0 cm and 30.0 cm. The trial was laid out in a randomiz complete block design with 3 replications. The crop sown at 20.0 cm row spacing gave the highest grain yield (3.99 t ha^-1). Similarly, the crop sown at 20.0 cm hill spacing produced the highest yield (4.44 t ha^-1). The results showed that the crop with 20.0 cm row to row spacing and 20.0 cm hill to hill spacing produced the highest grain yield (4.90 t ha^-1), whereas the lowest grain yield (2.55 t ha-1) was found with 20.0 cm × 2.5 cm. The present study concludes that the highest grain yield of BRRI dhan36 during Boro season under aerobic system of rice cultivation could be possible on sowing at 20.0 cm × 20.0 cm spacing.

Keywords: Spacing, Growth, Yield, Boro rice, Aerobic system

Location: Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh

Start Date: 18-02-2008

End Date: 19-06-2008

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

1. To find out the interaction effect of row to row spacing and hill to hill spacing on the yield and related characters of boro rice cv. BRRI dhan36 under aerobic condition.

Methodology:

An experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh, during 18 February to 19 June 2008 to study the effect of spacing on yield and related characters of boro rice (cv. BRRI dhan36) under aerobic system of cultivation. The land was medium high with soil having sandy loam texture. The land was flat, well drained and above the flood level. The pH value of the soil was 6.45. Treatments included 3 row spacing is 20 cm (L₁), 25 cm (L₂), and 30 cm (L₃) and 5 hill spacings is 2.5 cm (P₁), 5 cm (P₂), 10 cm (P₃), 15 cm (P₄) and 20 cm (P₅). The experiment was laid out in randomized complete block design with three replications. Each treatment was randomly allocated in the respective plot. The unit plot size was 4.0 m × 2.5 m. The distances maintained between replications were 1.0 m and unit plots were 0.75 m and various intercultural operations were done for maintaining the normal growth and development of the crop. The crop was harvested when about 90% of the seeds became golden yellow in colour. Five hills (excluding border hills) were randomly selected in each plot and uprooted before harvesting for recording the necessary data on various plant characters. Data were analyzed using the analysis of variance (ANOVA) technique with the help of computer package programme MSTATC and mean differences were adjudged by Duncan’s Multiple Range Test.

Source of Information: J. Agrofor. Environ. 3 (2): 149-154, 2010; ISSN 1995-6983

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The experiment was consisted of three row to row spacing viz. 20.0 cm, 25.0 cm and 30.0 cm and five hill to hill spacing viz. 2.5 cm, 5.0 cm, 10.0 cm, 15.0 cm and 30.0 cm. The experiment was laid out in a randomized complete block design with 3 replications. The unit plot size was 4.0 m × 2.5 m (10 m²) and the distance between blocks and plots were 1.0 and 0.75 m, respectively. In 2.5 cm spacing dry seed were sown in furrows maintaining seed to seed distance approximately 2.5 cm in the row where row to row distance was maintained as per treatments. From the results, the present study concludes that higher grain yield of Boro rice cv. BRRI dhan36 could be maximized by planting at 20 cm × 20 cm spacing under aerobic system of cultivation.

Knowledge Management: Journal