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Influences of Nitrogen Fertilizer on Biochemical Attributes of Potato (solanum Tuberosum L.) in Relation to Yield Potential

M. A. Islam
Regional Agricultural Research Station, Hathazari, Chittagong, Bangladesh

M. A. Baset Mia
Department of Crop Botany. Bangabandhu Sheikh Mujibur Rahman Agricultural University Gazipur-1706. Bangladesh.

M. A. A. Faroque
Department of Crop Botany. Bangladesh Agricultural University Mymensingh, Bangladesh

Abstract/ Executive Summary:

An experiment was conducted at the Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh, Bangladesh to evaluate the influence of fertilizer-N on biochemical characteristics, nutrient accumulation and yield of potatoes during the period from November 2002 to March 2003. Two varieties, namely Cardinal and Diamant and five levels of N viz. 0, 100, 125, 150 and 175 kg ha^-1 were applied in a factorial randomized complete block design with three replications. The results indicated that the biochemical characteristics, nutrient concentrations, yield components and yield were significantly influenced by the different levels of N. The nitrate reductase activity, chlorophyll content, total free amino acid showed positive linear relationship with different doses of N-fertilizers. The highest tuber weight and nitrogen accumulation were found from the plants which received 150 kg N ha^-1. Application of 150 kg N ha^-1 resulted in best biochemical characteristics, nutrient uptake, yield and yield components of potato varieties- Cardinal and Diament.

Keywords: Potato, N-fertilizers, Biochemical characters, Yield

Location: Bangladesh Institute of Nuclear Agriculture, Mymensingh

Start Date: 00-11-2002

End Date: 00-03-2003

Program Area: Crop-Soil-Water Management

Commodity: Potato, Fertilizer

Objectives:

To evaluate the influence fertilizer -N on biochemical characteristic, nutrient accumulation and yield of potatoes.

Methodology:

The experiment was conducted at the Bangladesh Institute of Nuclear Agriculture (BIN A), Mymensingh, Bangladesh during the period from November 2002 to March 2003. The experimental area enjoys a sub-tropical climate, which is characterized by high temperature, high humidity, heavy precipitation during April to October, and relatively low temperature and low rainfall during November to March. The crop used in this study was potato (Solanum tuberosum L.) varieties Cardinal and Diamant. The seeds were collected from the Bangladesh Agricultural Development Corporation (BADC), Mymensingh, Bangladesh. The design of the experiment was factorial randomized complete block with three replicates. Five levels of N- fertilizers namely 0, 100, 125, 150 and 175 kg N- ha^-1 were applied in this experiment. Triple super phosphate (TSP), muriate of potash (MOP), and gypsum at 150, 120 and 10 kg ha^-1 respectively were mixed into the soil as basal dose during land preparation according to fertilizer recommended guide (BARC, 1997). Data on biochemical parameters e.g. nitrate reductase and chlorophyll content were taken followed Stewart and Orebamjo (1979) and Arnon (1949) methods, respectively. Soluble protein was determined accordingly to Lowry et at. (1951). Total free amino acid and sugar was determined as Ninhydrin method and the methodology according to Karmoker (1981), respectively. Total N content of different plant parts was estimated following micro Kjeldahl method. The collected data were statistically analyzed to find out the level of significance using MSTATC package programme developed by Russel (1986). The mean differences were compared by Duncan's New Multiple Range Test (DMRT) and regression at 5% level of significance (Gomez and Gomez, 1984).

Source of Information: The Agriculturists, Vol: 5, (No-1&2), pp: 120-130, ISSN-1729-5211, Dec 2007

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Application of fertilizer-N increased biochemical parameters namely NRA, soluble protein, chlorophyll content, amino acid, total sugar; nutrient content and yield. Application of 150 kg N ha^-1 showed the best performance of maximum parameter and yield. Thus, application of 150 kg N ha^-1 might be a recommended dose for maximum tuber yield of potato varieties, Cardinal and Diamant.

Knowledge Management: Journal