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Optimization of Nitrogen Rate for Three Aromatic Rice Varieties in Patuakhali Region

Md. Emran Hossain
Department of Agronomy, Patuakhali Science and Technology University,Dumki,Patuakhali-8602, Bangladesh

Sultan Ahmed
Department of Agronomy, Patuakhali Science and Technology University, Dumki, Patuakhali-8602, Bangladesh

Md. Tariqul Islam
Department of Agronomy, Patuakhali Science and Technology University,Dumki,Patuakhali-8602, Bangladesh

Md. Moshiur Rahman Riaj
Department of Agronomy, Patuakhali Science and Technology University,Dumki,Patuakhali-8602, Bangladesh

Kazi Ariful Haque
Department of Agronomy, Patuakhali Science and Technology University,Dumki,Patuakhali-8602, Bangladesh

S.M. Zahid Hassan
Department of Agronomy, Patuakhali Science and Technology University,Dumki,Patuakhali-8602, Bangladesh

Abstract/ Executive Summary:

An experiment was conducted at the Agronomy Field Laboratory of Patuakhali Science and Technology University, Dumki, Patuakhali under AEZ-13 during the period from June 2017–December 2017 to optimize the nitrogen rate for three aromatic rice varieties in Aman season. The experiment was laid out in a randomized complete block design with three replications. The experiment was consisted of three aromatic rice varieties viz., V1= BRRI dhan34, V2= BRRI dhan38 and V3= Sakkorkhora and four fertilizer treatments viz., N0= 0 kg/ha nitrogen (Control), N1= 30 kg/ha nitrogen, N2= 45 kg/ ha nitrogen and N3= 60 kg/ha nitrogen. The unit plot size was 4 m x 2.5 m. The result revealed that application of nitrogen significantly influenced the yield of aromatic rice varieties. The number of effective tillers hill^-1 (12.00), 1000-grain weight (16.69 g), grain yield (3.44 t ha^-1), biological yield (8.05 t ha^-1), panicle length (29.44 cm) and harvest index (42.76%) were found highest with 45 kg N ha^-1but the highest plant height (152.43 cm) and straw yield (4.64 t ha^-1) were found from 60 kg N ha^-¹ and all the characters showed the lowest value in control. The variety BRRI dhan38 showed the best performance among the varieties. The longest plant height (157.08 cm) was found from Sakkorkhora but the longest panicle (28.89 cm), the maximum 1000-grain weight (16.71 g), the maximum grain yield of 3.38 t ha^-1, the maximum biological yield (7.87 t ha^-1) and harvest index (42.89%) were obtained from BRRI dhan38 and maximum filled grains per panicle (145.99) from BRRI dhan34. Interaction effect showed that BRRI dhan38 when fertilized with 45 kg N ha-1produced maximum grain yield (3.72 t ha-1) and the minimal grain yield (2.93 t ha^-1) was obtained from BRRI dhan34 fertilized without N.

Keywords: Aromatic rice, Nitrogen, Aaman season

Location:

Start Date:

End Date:

Program Area: Crop-Soil-Water Management

Commodity: Fertilizer, Rice

Objectives:

The recent study was conducted to identify the suitable aromatic rice variety and to determine the optimum rate of nitrogen fertilizer for the three aromatic fine rice cultivation.

Methodology:

The experiment was carried out at the Agronomy Field Laboratory of Patuakhali Science and Technology University, Dumki, Patuakhali, Bangladesh during the period from June 2017 –December 2017 to optimize the nitrogen rate for three aromatic rice varieties in Aman season under AEZ-13 tidal ecosystem. The experimental field was located at 22° 27′ 57.96′′ N latitude and 90° 22′ 56.64′′ E longitude having an altitude of 1.5 m above the mean sea level. The experiment was laid out in randomized complete block design with three replications. The experiment was consisted of three aromatic rice varieties viz., BRRI dhan34, BRRI dhan38 and Sakkorkhora and four fertilizer treatments viz., N0= 0 kg/ha nitrogen (Control), N1= 30 kg/ha nitrogen, N2= 45 kg/ha nitrogen and N3= 60 kg/ha nitrogen. The unit plot size was 4 m x 2.5 m. All cultural practices were done uniformly as per recommendation. Whole plots were harvested to obtain grain yield. Data recorded for different parameters were compiled and tabulated in proper form for statistical analysis. The collected data were statistically analyzed using “Analysis of variance technique” with the help of computer package MSTAT. The mean differences among the treatments were tested with Duncan’s Multiple Range Test (Gomez and Gomez, 1984).

Source of Information: International Journal of Natural and Social Sciences, 2018, 5(4):65-70 ISSN: 2313-4461

Article Link (Online Journal):

Funding Source:

1.

Budget:

Total Budget (Tk.) :

Achievement/Findings:

It may be concluded from the present study that application of N @ 45 kg ha-1showed the best performance in respect of yield and yield attributes of aromatic rice varieties. BRRI dhan38 gave the highest yield among the aromatic rice varieties and coupled with N @ 45 kg ha^-¹ gave the best performance in respect of growth and yield.

Knowledge Management: Journal