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Effect of Npks and Plant Density on Seed Yield and Profitability of Brassica Campestris Under Late Sown Conditions

P. C. Sarker
Senior Scientific Officer
Seed Technology Division, BARI, Gazipur, Bangladesh

T. Hossain
Professor
Department of Crop Botany, BSMRAU, Gazipur-1706, Bangladesh

J. U. Ahmed
Professor
Department of Crop Botany, BSMRAU, Gazipur-1706, Bangladesh

M. A. Karim
Professor
Department of Agronomy, BSMRAU, Gazipur- 1706, Bangladesh

Abstract/ Executive Summary:

A field experiment was conducted at the research farm of Crop Botany Department, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh during rabi season of 2007- 2008 to study the yield and economic performance of Brassica campestris var. BARI Sarisha-14 under late sown condition as affected by NPKS fertilizer dose and plant density.There were three levels of fertilizer doses, viz., F₁= N₇₅P₂₀K₂₈S₁₈ kg/ha. F₂= N₁₁₀P₃₀K₄₀S₂₅ kg/ha, F₃= N₁₄₅P₄₀K₅₂S₃₃ kg/ ha and three levels of plant density, viz., P₁= 60 plants lm-, P₂= 80 plants/m², P₃ =100 plants/ m² in the experiment. Seeds of rapeseed variety BARI Sarisha-14 were sown on 28^th November, 2007. Results showed that siIiqua/plant and seed yield/ ha were significantly influenced by different NPKS fertilizer doses and plant densities and also 1000 seed weight by plant densities. In addition, their interaction effects showed significant influence on number of seeds/ siliqua. Fertilizer dose N₁₄₅P₄₀K₅₂S₃₃ kg/ha plus 100 plants/m² performed better with respect to siliqua/plant, seeds/siliqua, 1000 seed weight and seed yield/ ha. This treatment combination gave up to 26% higher seed yield (1029 kg/ ha) compared to its control (818 kg/ ha). Farmers might grow Brassica campestris var. BARI Sarisha- 14 by using this technology to get higher gross return (Tk. 27098), net return (Tk . 9863) and benefit cost ratio (1.36) under late sown condition.

Keywords: Rapeseed, Late sown, Seed yield, Profitability

Location: Crop Botany Department, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur

Start Date: 01-01-2007

End Date: 31-12-2008

Program Area: Crop-Soil-Water Management

Commodity: Mustard

Objectives:

To determine the optimum NPKS fertilizer dose and plant density for higher seed yield and maximum profitability of rapessed cultivation under late sown condition

Methodology:

The experiment was conducted at the research farm of Crop Botany Department, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh during rabi season of 2007- 2008 to study the influence of NKPS fertilizer dose and plant density on seed yield and profitability of rapeseed under late sown condition. The experimental area belongs to the AEZ 28. The texure of soil was clay loam having pH 6.25, organic matter 1.50%, total nitrogen 0.08%, available phosphorus 14.15 ppm, exchangeable potassium 0.20 meq per 100 g soil, available sulphur 3.35% and boron 0.14 ppm. The experiment was laid out in a 2 factor split plot design (SPD) with three replications. Three fertilizer doses vi z. N₇₅P₂₀K₂₈S₁₈ kg/ ha (F₁), N₁₁₀P₃₀K₄₀S₂₅kg/ ha (F₂) and N₁₄₅P₄₀ K₅₂S₃₃ kg/ ha (F₃) were assigned in main plot and three plant densities vi z. 60 plants m^·2(P₁), 80 plants m^·2 (P₂) and 100 plants m^·2 (P₃) were placed as sub- plot. Seeds of variety BARI Sarisha- 14 were collected from Oilseed Research Centre, BARI. Data on seed yield and yield attributes like siliqua/ plant, seeds/ siliqua, 1000 seed weight and seed yields were recorded. Seed yield was adjusted at 9% moisture level. Recorded data were analyzed statistically with the help of MSTATC programme. Treatment means were compared following Duncan's Multiple Range Test (DMRT). Price of inputs and outputs were calculated considering local price of that time.

Source of Information: BANGLADESH AGRONOMIY JOURNAL, Vol. 14 (1 & 2), pp. 01-07, December 2011, ISSN 1013 - 1922.

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Gross return per hectare increased with increasing of fertilizer dose and also plant density. Maximum gross return was found from the highest dose of NPKS fertilizers along with maximum plant density (F₃P₃) might be due to its higher seed yield and biological yield, but the minimum gross return was observed at the lowest fertilizer dose net return and benefit cost ratio, fertilizer dose N₁₄₅P₄₀K₅₂S₃₃ kg/ ha along with plan t density 100 plants/ m² performed best under late sown condition. By this treatment combination, yield of rape seed (BARI Sarisha 9) could be increased up to 25% and it is 17.30% higher than our national average of 898 kg/ ha.

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