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Sulphur Nutrition of Aromatic Rice

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

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

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

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

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

Abstract/ Executive Summary:

A high yielding aromatic rice variety BRRI dhan38 and a local one Chiniguda were grown with 0, 5, 10, 15 and 20 kg S ha^-1 at the Agronomy Field Laboratory, Department of Agronomy, Bangladesh Agricultural University, Mymensingh during aman season (July to December) of 2007 following randomized complete block designed experiment with three replications to study the sulphur requirements of aromatic rice. Variety significantly influenced all the yield contributing characters and yield of aromatic rice. Local variety Chiniguda produced higher grain yield (2.87 t ha^-1) than high yielding variety BRRI dhan38 (2.00 t ha^-1). Yield contributing characters like no. of effective tillers hill^-1and grains per panicle^-1 were increased gradually with increased level of S but 1000-grain weight was unaffected. Grain yield (2.54 kg ha^-1) was gradually increased upto 10 kg S ha^-1 and thereafter no increment was recorded. Chiniguda interacted favourably with 10 or 15 or 20 kg S ha^-1 to produce the highest grain yield. Therefore, local aromatic rice variety Chiniguda may be cultivated with 10 kg S ha^-1 in late T. aman season for higher yield.

Keywords: Sulphur level, Variety, Aromatic rice and grain yield.

Location: Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh

Start Date: 00-07-2007

End Date: 00-12-2007

Program Area: Variety and Species

Commodity: Rice

Objectives:

1. To find out the comparative performance of two aromatic rice varieties BRRI dhan38 and Chiniguda and to identify the suitable dose of sulphur for getting higher yield of aromatic rice.

Methodology:

The experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during the aman season (July to December) of 2007 to evaluate the influence of sulphur fertilization on the productivity of local and high yielding aromatic rice varieties. The experimental soil belongs to the Sonatala Series of the dark grey flood plain soil type under the old Brahmaputra Flood Plain Agro ecological zone (AEZ 9). The soil of the experimental field was more or less neutral in reaction with pH value 6.70, low in organic matter content (1.20%), and general fertility level of the soil was also low. Available sulphur content of the experimental field is 14.31 ppm. The experiment comprised of two aromatic rice varieties viz., BRRI dhan38 (high yielding) and Chiniguda (local), and five levels of S viz. 0, 5, 10, 15 and 20 kg ha^-1. The experiment was laid out in a randomized complete block design with three replications. The size of unit plot was 2.5m x 2.0m. Thirty day old seedlings of both the varieties were transplanted on 23 August 2007 at the rate of 3 seedlings hill^-1 with 25cm x 15cm spacing. Each plot was fertilized with TSP and MOP @ 100 and 70 kg ha^-1, respectively during final land preparation, and urea @ 150 kg ha^-1 was top dressed in three equal splits at 15, 30 and 45 days after transplanting (DAT). Sulphur was applied as basal in the form of gypsum as per treatments. Necessary intercultural operations were done in order to ensure and maintain the normal growth of the crop. At maturity, five hills (excluding border hills) were randomly selected and uprooted from each unit plot for recording data on different crop characters on 9 December 2007. Grain and straw yields were recorded from central 1 m² area. Data were collected on several parameters like plant height, number of effective tillers hill^-1, number of non-effective tillers hill^-1, panicle length, number of grains panicle^-1, number of sterile spikelets panicle^-1, 1000-grain weight, grain yield, straw yield and harvest index. Data were compiled and tabulated in proper form for statistical analysis. Data were analyzed using Analysis of Variance (ANOVA) technique with the help of computer package programme MSTAT, and mean differences were adjudged by Duncan’s Multiple Range Test.

Source of Information: J. Agrofor. Environ. 2(1): 1-6, 2008;ISSN 1995-6983

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Variety significantly influenced all the yield contributing characters and yield of aromatic rice. Local variety Chiniguda produced higher grain yield (2.87 t ha^-1) than high yielding variety BRRI dhan38 (2.00 t ha^-1). Yield contributing characters like no. of effective tillers hill^-1and grains per panicle^-1 were increased gradually with increased level of S but 1000-grain weight was unaffected. Grain yield (2.54 kg ha^-1) was gradually increased upto 10 kg S ha^-1 and thereafter no increment was recorded. Chiniguda interacted favourably with 10 or 15 or 20 kg S ha^-1 to produce the highest grain yield. Therefore, local aromatic rice variety Chiniguda may be cultivated with 10 kg S ha^-1 in late T. aman season for higher yield.

Knowledge Management: Journal