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Yield and Nutritional Quality of Cabbage as Affected by Nitrogen and Phosphorus Fertilization

K. M. F. Haque
IFST, BCSIR, Dhaka, Dr. Qudrat-I-Khuda Road.,Dhanmondi, Dhaka-1205, Bangladesh

A. A. Jahangir
BCSIR Labs, Dhaka, Dr. Qudrat-I-Khuda Road.,Dhanmondi, Dhaka-1205, Bangladesh

M. E. Haque
IFST, BCSIR, Dhaka, Dr. Qudrat-I-Khuda Road, Dhanmondi, Dhaka-1205, Bangladesh

R. K. Mondal
BCSIR Labs, Dhaka, Dr. Qudrat-I-Khuda Road, Dhanmondi, Dhaka-1205, Bangladesh

M. A. A. Jahan
BCSIR Labs, Dhaka, Dr. Qudrat-I-Khuda Road, Dhanmondi, Dhaka-1205, Bangladesh

M. A. M. Sarker
BCSIR Labs, Dhaka, Dr. Qudrat-I-Khuda Road, Dhanmondi, Dhaka-1205, Bangladesh

Abstract/ Executive Summary:

An experiment was conducted in field condition to study the effect of nitrogen phosphorus fertilization on growth, yield and nutrient content of cabbage. The experiment was laid out in randomize block design with three replications. The yield and yield components were maximized by N₃P₂ fertilizer treatment. Nutrient content of cabbage varied with fertilizer treatment. The maximum amount of reducing sugar, ascorbic acid, phosphorus were found at the highest rate of N - P fertilization whereas accumulation of titrable acidity, iron, calcium were maximum at the rate of N₂P₂ treatment. However pH, ash content were more or less same throughout the experiment.

Keywords: Nitrogen, Phosphorus, Cabbage, Yield, Nutrient content

Location: At BCSIR agronomic field Dhaka

Start Date: 00-00-2002

End Date: 00-00-2003

Program Area: Crop-Soil-Water Management

Commodity: Cabbage

Objectives:

Attempts have been made in the present investigation to study the response of various level of nitrogen phosphorus application on cabbage yield and its nutrient content.

Methodology:

The experiment was carried out at BCSIR agronomic field Dhaka during rabi season 2002-2003 using the variety Atlas-70. The soil of the experimental field was sandy clay loam having a pH 5.8, 1.52 % organic matter and 0.04 % total nitrogen, available sulphur (10 ppm), available phosphorus (15 ppm). The experiment was laid out in a randomized block design with three replications. The unit plot size was 3m x 6m. The row to row and plant to plant spacing were 60 and 40 cm respectively. The nitrogen fertilizer doses under study were 60 kg N/ha (N1), 120 kg N/ha (N2), 180 kg N/ha(N3), and that of phosphorus were 30 kg P₂O₅/ ha (P1), 60 kg P₂O₅/ ha (P2) and 90 kg P₂O₅/ ha (P3). The source of nitrogen and phosphorus were urea and triple super phosphate respectively. At the time of land preparation nitrogen and phosphorus were applied in the field. All the intercultural operation were done in proper time. At harvest time 10 plants were selected at random from each plot to collect data on plant height and yield components were recorded on the selected plants. The total yield were recorded from the whole plot. Each individual cabbage was divided longitudinally in four equal parts. Only composite sample taken from these parts were used for the determination of moisture, protein, total sugar, reducing sugar and titrable acidity by standard method of AOAC The pH and total soluble solids (TSS) were determined by using standard pH meter and Abb's Refractometer respectively. Ash was determined by heating sample at 600^OC for six hours or until a constant weight was reached. Vitamin C was analyzed by the titrimetric method using 2, 6, dichlorophenol-indophenol dye. The minerals were determined by the method described in a Manual of Laboratory Techniques.8 The collected data were statistically analyzed following the principles of analysis of Variance and Duncan's New Multiple Range Test.

Source of Information: Bangladesh J. Sci. Ind. Res. 41(1-2), 41-46, 2006

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The finding of the study indicate that application of nitrogen - phosphorus treatment improve the yield contributionary characters of cabbage leading to higher yield and better nutrition concern. So further research is needed in this direction with other varieties of cabbage to establish the present finding. Acknowledgement The authors are grateful to the Director, BCSIR Laboratories Dhaka and the Director, IFST, Dhaka for their co-operation and help for providing laboratory facilities during the carry out of the work.

Knowledge Management: Journal