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Yielding Ability of Aromatic Rice Under Stacking and Non-stacking Conditions with Different Nitrogen Fertilization

K. M. S. HAQUE
M.S Student
Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Salna, Gazipur-1706, Bangladesh

Q. A. KHALIQ
Professor
Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Salna, Gazipur-1706, Bangladesh

J. AKTAR
M.S Student
Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Salna, Gazipur-1706, Bangladesh

A. M. SHAMSUDDULA
M.S Student
Department of Agricultural Economics, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Salna, Gazipur-1706, Bangladesh

Abstract/ Executive Summary:

A field experiment was conducted to study the effect of nitrogen fertilizer on yielding ability of indigenous aromatic rice cultivars under stacking and non-stacking conditions. Rice cultivars were grown during Aman season, 2002. There were four cultivars, namely, Shakkorkhora, Chinigura, Kalijira and Kataribhog, each with three levels of nitrogen fertilizer (0, 60 and 120 kg N ha^-1). At the time of heading the experimental plots were equally divided into two parts. The crop in the half of the plot was left on the fate of the nature and that in the other half of the plot was mechanically supported by stacking to prevent lodging. Under stacking condition with the application of 60 Kg N ha-1 the grain yields increased by 12%, 23%, 29% and 18% in Shakkorkhora, Chinigura, Kalijira and Kataribhog, respectively compared to control. With stacking yield was increased by 0.6% in Shakkorkhora, 25% in Chinigura, 18% in Kalijira and 11% in Kataribhog at 60 kg N ha^-1 and by 18% in Shakkorkhora, 27% in Chinigura, 35% in Kalijira and 80% in Kataribhog at 120 kg N ha^-1. The grain yield increase under stacking condition was supported by the increase in the number of filled spikelets per panicle, 1000-grain weight and decrease in sterility. Under stacking condition even at high level of nitrogen (120 kg N ha^-1) the number of filled grain per panicle and 1000-grain weight increased remarkably. The highest grain yield was observed in plants with 60 kg N ha^-1 under non-stacking condition. Stacking increased grain yield remarkably. Kataribhog with 120 kg N ha-1 produced 3.7 t ha-1 grain yield when provided artificial stacking, which was 2 t ha^-1 under non-stacking condition. Under stacking condition, the cultivars Shakkorkhora, Kalijira and Kataribhog showed their highest yielding ability at 120 kg N ha^-1.

Keywords: Nitrogen fertilizer, stacking, non-staking condition, aromatic rice

Location: Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur

Start Date: 00-08-2002

End Date: 00-12-2002

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

To explore the yielding ability of four indigenous aromatic rice cultivars at different levels of nitrogen under stacking and non-stacking conditions

Methodology:

A field experiment was carried out at the experimental field of Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur during the rainy season of 2002. The experimental site is located at the center of Madhupur tract (24⁰09’ N latitude and 90⁰26’ E longitude) having an elevation of 8.2 meter from the sea level. The climate of the experimental site is sub-tropical in nature characterized by heavy rainfall during the months from June to September and scanty rainfall during winter with gradual fall of temperature. Average air temperature ranged from 30.18⁰C (maximum) to 19.86⁰C (minimum) and total rainfall recorded 744.6 mm during the study period (August to December 2002). The soil type of the experimental field belongs to the shallow red-brown terrace type of Salna series. The soil is characterized by poor fertility and impeded internal drainage. Rice cultivars, namely Chinigura, Kalijira, Shakkorkhora and Kataribhog were grown with three levels of nitrogen fertilizer (0, 60 and 120 Kg N ha^-1). The experiment was laid out in a randomized complete block design. Triple Super Phosphate, Muriate of Potash, Gypsum and Zinc Sulphate were applied as the sources of P₂O5, K₂O, S and Zn, respectively. P₂O₅, K₂O, S and Zn were applied at the rate of 90, 50, 40, and 5 kg ha^-1 respectively. All fertilizers except urea were applied and thoroughly mixed with the soil at the time of final land preparation. Urea was applied as top dressing in three equal installments, at active tillering stage (18 days after transplanting), at maximum tillering stage (35 days after transplanting) and before panicle initiation stage (50 days after transplanting). The seedlings were transplanted at 30 days after seeding. One seedling per hill was used maintaining 25 cm row to row and 10 cm plant to plant distance in well prepared land. Weeding, irrigation and application of pesticide were done as and when necessary. Standing water of 2 to 4 cm was maintained in the field until the crop attained hard dough stage. At the time of heading the experimental plots were equally divided into two parts. Thus every part of the plot occupied 3.75 m² land area. The crop in the half of the plot was left on the fate of the nature (treated as ‘nonstacking’) and that in the other half of the plot was mechanically supported by stacking ( treated as ‘stacking’) to prevent lodging. Bamboo sticks and plastic ropes were used for stacking. Mechanical supports were provided in such a fashion that the canopy architecture and light interception remained almost unaffected. The total number of emerged panicle per hill was counted at maturity stage. The length of all the panicles of a hill was measured in centimeter from the collar (base mark) of the culm to the tip of the panicle. Both fertile and sterile spikelets per panicle were separately counted manually from all of the panicles of sample hill. From the filled grains of a hill, 1000 grains were randomly counted by Multi-auto counter and the weight of these grains was recorded. From the middle portion of the plots the stacked and non-stacked hills were harvested separately and grain yield was recorded and adjusted with 14% moisture content. Harvest index (HI) was calculated by dividing the economic yield (grain) by the biological yield (grain + straw) from the same area. The data were analyzed by partitioning the total variance by using MSTAT-C program. The treatment means were computed using Least Significant Difference test and interrelationship was worked out employing regression analysis.

Source of Information: Int. J. Sustain. Crop Prod. 1(1): 01-05 (2006)

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The findings of the experiment can finally be summarized as i). Under natural growing condition the aromatic rice cultivars showed their highest yielding ability at 60 kg N ha^-1, and this yielding ability can be further increased by 0.6% in Shakkorkhora, 25% in Chinigura, 19% in Kalijira and 11% in Kataribhog by preventing lodging. ii). Under lodging preventing condition, except Chinigura the other three cultivars Shakkorkhora, Kalijira and Kataribhog showed their highest yielding ability even up to 120 kg N ha^-1. iii). As the indigenous aromatic rice cultivars Shakkorkhora, Kalijira and Kataribhog showed their highest yielding ability even at highest level of nitrogen (120 kg N ha^-1) application, these cultivars may be used as parent materials for the development of high yielding aromatic rice varieties.

Knowledge Management: Journal