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Response of Seed Yield Contributing Characters and Seed Quality of Rapeseed (brassica Campestris L.) to Nitrogen and Boron

Jasmin Ara
Department of Agricultural Botany, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh

S. Sarkar
Department of Agricultural Botany, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh

M. M. Islam
Department of Agricultural Botany, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh

J. A. Mahmud
Assistan professor
Department of Agroforestry and Environmental Science, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh

M. S. Ryad
Department of Agricultural Extension, Bangladesh

F. Nur
Seed Certification Agency, Joydebpur, Gazipur, Bangladesh

Abstract/ Executive Summary:

The experiment was conducted at the experimental Field of Sher-e-Bangla Agricultural University, Dhaka during November 2011 to February 2012 to investigate the role of nitrogen (N) and boron (B) on seed yield contributing characters and seed quality of rapeseed (Brassica campestris L.). The experiment was factorial with two factors, factor A consisted of four different N levels viz. 0, 60, 120, 180 (kg/ha) and factor B consisted of three different levels of B viz. 0, 1, 2 (kg/ha). Randomized Complete Block Design (RCBD) with three replications was used in this experiment. The interaction between N and B significantly influenced seed weight plant^-1, 1000 seed weight and oil content of seed. The maximum value of seed yield contributing characters and oil content of rapeseed was observed with the combined dose of 120 kg N/ha and 2 Kg B/ha whereas the lowest values were obtained from control or no fertilization. The maximum oil content (42.96 %) was obtained from 120 kg N/ha with 2 Kg B/ha treatment combination. It can be suggested that the combined doses of 120 kg N/ha with 2 kg B/ha (N₂B₂) is appropriate for higher yield and quality seed production of rapeseed cv. BARI Sarisha14.

Keywords: Rapeseed, Nitrogen, Boron, Seed yield, Seed quality

Location: The experimental Field of Sher-e-Bangla Agricultural University, Dhaka

Start Date: 00-11-2011

End Date: 00-02-2012

Program Area: Crop-Soil-Water Management

Commodity: Mustard

Objectives:

To investigate the role of nitrogen (N) and boron (B) on seed yield contributing characters and seed quality of rapeseed (Brassica campestris L.).

Methodology:

The experiment was conducted at the Sher-e-Bangla Agricultural University Farm, Dhaka, under the agro-ecological zone of Modhupur Tract, AEZ-28 during rabi season, November to February of 2011-12 to examine the response of nitrogen (N) and boron (B) on growth, yield attributes, yield and seed quality of rapeseed cv. BARI Sarisha- 14. The seed was collected from the Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur. Before sowing germination test was done in the laboratory and percentage of germination was over 95%. The experiment was laid out in randomized complete block design with three replications. Treatments of the experiment was four doses of nitrogen viz. N0 = without nitrogen, N₆₀ = 60 kg N/ha, N₁₂₀ = 120 kg N/ha, N₁₈₀ = 180 kg N/ha and three doses of boron viz. B₀ = 0 kg B/ha, B₁ = 1 kg B/ha, B₂ = 2 kg B/ha. The total plot number was 12 x 3 = 36. The unit plot size was 3 m x 1.5 m = 4.5 m². The land was ploughed with a rotary plough and power tiller for four times. Ploughed soil was then brought into desirable fine tilth and leveled by laddering. The weeds were cleaned properly. The final ploughing and land preparation were done on 16 November, 2011. In this experiment manurers and fertilizers were used according to BARI. Sowing was done on 18 November, 2011 in rows 30 cm apart. Seeds were sown continuously in rows at a rate of 8 kg/ha. After sowing, the seeds were covered with the soil and slightly pressed by hand. The optimum plant population, 60 plants/ m2 was maintained by thinning excess plant at 15 DAS. The plant to plant distance was maintained as 5 cm. One weeding with khurpi was given on 25 DAS. Different intercultural operations and protection measures were done when necessary. Previous randomly selected ten plants, those were considered for the growth analysis, were collected from each plot to analyze seed weight plant^-1, 1000 seed weight(g), seed oil content(%) and germination percentage. The oil content of seed was determined from Oil Seed Research Centre, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur- 1701. Oil content of seeds was determined by the following methods. The germination percentage of seed was analyzed from Seed Certification Agency (SCA), Joydebpur, Gazipur. The data obtained from the experiment were subjected to statistical analysis following analysis of variance technique (Russell, 1986). The mean differences were tested through least significant difference (LSD) method.

Source of Information: Applied Science Reports, 5 (1) : 5-10, 2014

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The combined use of 120 kg N/ha and 2 kg B/ha along with recommended doses of other fertilizer would be beneficial to increase the seed yield and oil content of Rapeseed variety BARISarisha-14 under the climatic and edaphic condition of Sher-e-Bangla Agricultural University, Dhaka.

Knowledge Management: Journal