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Performance of Aromatic Rice Varieties as Influenced by Spacing

M.S. Islam
Assistant Professor
Dept. of Agronomy, Hajee Mohammad Danesh Science & Technology University (HSTU), Dinajpur

M.S.I. Sikdar
Assistant Professor
Dept. of Agronomy, Hajee Mohammad Danesh Science & Technology University (HSTU), Dinajpur

M.M. Rahman
Assistant Professor
Dept. of Agronomy, Hajee Mohammad Danesh Science & Technology University (HSTU), Dinajpur

M.M. Akhter
Scientific Officer
Wheat Research Centre, BARI, Dinajpur

A.K. Azad
Assistant Professor
Dept. of Genetic and Plant Breeding, HSTU, Dinajpur, Bangladesh

Abstract/ Executive Summary:

An experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during July to December 2001 to investigate the influence of spacing on the qualitative characters of aromatic rice. The experiment comprised of three varieties namely V₁: Kalizira, V₂: Badshabhog and V₃: Tulshimala and four different spacing viz., S₁: 8 cm × 25 cm, S₂:12 cm × 25 cm, S₃:16 cm × 25 cm and S₄:20 cm × 25 cm. Among three varieties Kalizira was found significantly superior to Tulshimala and Badshabhog with respect to nitrogen content, protein and aroma of grain. Quality of aromatic rice increase with increasing spacing up to 20 cm × 25 cm. Experimental result revealed that the variety Kalizira may be grown following 20 cm × 25 cm spacing for getting better quality of aromatic rice.

Keywords: Spacing, Performance of aromatic rice, Qualitative characters

Location: Agronomy field laboratory, Bangladesh Agricultural University, Mymensingh

Start Date: 00-07-2001

End Date: 00-12-2001

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

To investigate the influence of spacing on the qualitative characters of aromatic rice

Methodology:

The research work was carried out at the agronomy field laboratory, Bangladesh Agricultural University, Mymensingh during the period from July to December 2001 (Amon season). The experimental plot was a medium high land with silt loam soil having a pH value of 6.4 and having 1.29% organic matter. Four spacing viz., 8 cm x 25 cm, 12 cm x 25 cm, 16 cm x 25 cm and 20 cm x 25 cm were included in the experiment. Three aromatic rice varieties namely, Kalizira, Tulshimala and Badshabhog were used as experimental crop. The experiment was laid out in a split-plot design while varieties in the main plot and spacing in sub plot with three replications. The unit plot was 4.0 m x 2.5 m. Urea, triple super phosphate, muriate of potash, gypsum and zinc sulphate were applied at the rate of 100, 50, 60, 35 and 5 kg ha^-1, respectively. One-third urea and whole amount of other fertilizer were applied at final land preparation. The rest of the urea was top dressed in two equal splits, at 25 and 50 days after transplanting . Thirty-six days old seedlings were transplanted in the experimental plot with three seedlings per hill on 12 August 2001. All intercultural operations were done as when necessary. The crop was harvested on 12 December 2001, at full maturity. Grain and straw samples from each plot were taken and separately oven dried at 65⁰C over night to grind in a grinding machine. Total nitrogen content determine by Micro-kjeldahl method. After determination of nitrogen in both rice grain and straw, nitrogen uptake by both rice grain and straw and total nitrogen uptake were determined by the following formula:

Nitrogen uptake by grain (kg ha^-1) = % N in grain × Grain yield (kg ha^-1) ÷100

Nitrogen uptake by straw (kg ha^-1) = % N in grain × Straw yield (kg ha^-1) ÷ 100

Protein content of the grain was determined by multiplying the nitrogen content of grain by 6.25. For germination test, seeds were placed on the Petridish following the rules and procedures of ISTA (ISTA, 1976). The vigor index was calculated by counting the number of normal seedlings 7 days of setting the test up to 14 days after placement of seed. Aroma of rice was detected by olfactory test by taking smell following the method developed by Nagaragu et al. and cooking time of rice was described by Juliano et al.. The collected data were analyzed following the ANOVA-technique and the mean differences were adjudged with Duncan’s Multiple Range Test using a statistical computer package MSTAT.

Source of Information: Journal of innovation and development strategy; 2(1): 43-46 (April 2008)

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The highest nitrogen content, protein, aroma was found in Kalizira then Tulshimala and Badshabhog. The spacing 20 cm × 25 cm produced significantly highest quality aromatic rice. Kalizira should be planted at 20 cm × 25 cm spacing for getting better quality products.

Knowledge Management: Journal