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Nutrient Accumulation and Their Uptake by Red Amaranth as Influenced by Different Levels of N

Mr. Md. Y. Miah
M S Fellow
Department of Soil Science, Bangabandhu Shiekh Mujibur Rahman Aagricultural UniversityGazipur-1706

Abstract/ Executive Summary:

The study was conducted at the farm of Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur during the period of November to December, 2010 to enhance the production of red amaranth (cv: BARI lal shak 1) through the determination of nutrient accumulations and their uptake by optimizing the appropriate levels of nitrogen (N) from urea. The experiment was laid out in a Randomized Complete Block Design (RCBD) comprising six treatments with four replicate each. There were altogether six levels of N viz. N₀(0 kg N ha^-1), N₅₀ (50 kg N ha^-1), N₇₅ (75 kg N ha^-1), N₁₀₀(100 kg N ha^-1), N₁₂₅ (125 kg N ha^-1) and N₁₅₀(150 kg N ha^-1)_, respectively. P, K and S were applied from TSP, MoP and gypsum @ 23, 17 and 4 kg ha^-1, respectively. Results revealed that different levels of N significantly influenced the nutrient accumulation and their uptake by red amaranth. Highest nutrient contents in most of the cases were observed when N was applied @ 150 kg ha^-1 which was identical with the treatment N₁₀₀ and the lowest contents were found in N₀treatment. Nutrient uptake followed similar trend like nutrient accumulation. The over result suggests that N @ 150 kg N ha^-1 can be applied to boost up the production of red amaranth cv: BARI lal shak 1 under the agro-climatic conditions of the study area.

Keywords: Red amaranth, Nutrient accumulation, Urea

Location: Gazipur

Start Date: 01-11-2010

End Date: 31-12-2010

Program Area: Crop-Soil-Water Management

Commodity: Fertilizer

Objectives:

To enhance the production of red amaranth (cv: BARI lal shak 1) through the determination of nutrient accumulations and their uptake by optimizing the appropriate levels of nitrogen (N) from urea.

Methodology:

The study was conducted at the farm of Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU) campus, Gazipur, Bangladesh during November-December, 2010 in the agro-ecological zone (AEZ 28) of Modhupur tract representing shallow red brown terrace soil. Soil characters of the experimental site were silty clay loam having pH 5.5, total nitrogen 0.054% and organic matter 1.38%. The experiment was laid out in a Randomized Complete Block Design (RCBD) comprising six levels of N viz. N₀(0 kg N ha^-1), N₅₀ (50 kg N ha^-1), N₇₅ (75 kg N ha^-1), N₁₀₀(100 kg N ha^-1), N₁₂₅ (125 kg N ha^-1) and N₁₅₀(150 kg N ha^-1) with urea as N source and replicated four. Opened with a tractor, the land was ploughed and cross-ploughed for several times with a power tiller followed by laddering to bring the soil under good tilth conditions. P, K and S gypsum @ 23, 17 and 4 kg ha^-1 were applied from TSP, MoP, gypsum, respectively during final land preparation. In contrast, urea was top dressed in two equal installments at 10 and 25 days after sowing (DAS), respectively. The prepared block consisted of 24 plots where unit plot size, plant accommodation and intercultural operations were maintained by the methods of Choudhury et al. (1974) and Waseem and Nadeem (2001). To check insect attack, Malathion 57 EC was applied at 2 mL/L fortnightly. Irrigations were given by watering cane as and when needed. Eight plants were randomly selected from each plot to study the nutrient accumulation and their uptake. N, P, K, Mg, S, and Zn contents in red amaranth were determined (Miah et al., 1998) at soil chemistry laboratory of BSMRAU using AAS (Model Z-9000, Hitachi Co., Japan). Nutrient uptake was calculated from nutrient contents and dry matter yield and statistical analyses were performed by the method of Gomez and Gomez (1984).

Source of Information: J. Bangladesh Agril. Univ. 11(1): 29–32, 2013, ISSN 1810-3030

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Results revealed that different levels of N significantly influenced the nutrient accumulation and their uptake by red amaranth. Highest nutrient contents in most of the cases were observed when N was applied @ 150 kg ha^-1 which was identical with the treatment N₁₀₀ and the lowest contents were found in N₀treatment. Nutrient uptake followed similar trend like nutrient accumulation. The over result suggests that N @ 150 kg N ha^-1 can be applied to boost up the production of red amaranth cv: BARI lal shak 1 under the agro-climatic conditions of the study area.

Knowledge Management: Journal