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Response of Nitrogen and Phosphorus Fertilizer and Plant Spacing on Growth and Yield Contributing Character of Sunflower

A. A. Jahangir
BCSIR Laboratories, Dhanmondi, Dhaka-1205. Bangladesh

R. K. Mondal
BCSIR Laboratories, Dhanmondi, Dhaka-1205. Bangladesh

Katrun Nada
BCSIR Laboratories, Dhanmondi, Dhaka-1205. Bangladesh

R. Sadia Afroze
BCSIR Laboratories, Dhanmondi, Dhaka-1205, Bangladesh

M. A. Hakim
BCSIR Laboratories, Dhanmondi, Dhaka-1205, Bangladesh

Abstract/ Executive Summary:

The plant spacing of 20, 25 and 30 cm were used for the study. The doses of nitrogen and phosphorus were 80, 100, 120 and 45, 60, 75 kg/hectare respectively. The experiment was carried out in a randomized block design with three replications. 20 cm plant spacing produced the highest plot yield. Maximum number of seeds per head and yield were produced by the application of 120 kg N + 75 kg P₂O₅ per hectare. In case of plant spacing x fertilizer interaction effect, 20 cm plant spacing with 120 kg N + 75 kg P₂O₅ per hectare treatment produced the highest head diameter and seed yield.

Keywords: Plant spacing, Nitrogen-phosphorus, Maximum yield, Sunflower.

Location: Experimental field of BCSIR (Bangladesh Council of Scientific and Industrial Research) Dhaka

Start Date: 00-00-2002

End Date: 00-00-2003

Program Area: Crop-Soil-Water Management

Commodity: Sunflower

Objectives:

An attempt has been made to study the effect of plant spacing and nitrogen-phosphorus fertilizer for getting maximum yield of sunflower.

Methodology:

The investigation was made in the experimental field of BCSIR (Bangladesh Council of Scientific and Industrial Research) Dhaka, during the winter season of 2002-2003. The soil of the experimental field was sandy clay loam having pH 5.8, 1.5 % organic matter and 0.04 % total nitrogen. The pH of moist soil was determined by using a corning glass electrode pH meter (model-7).12 Organic matter content was calculated by multiplying the rules of organic carbon with conventional factor 1.74.13 The total nitrogen were determine Microkjeldahl method as described by Jakson.12 The unit plot size was 3m x 3m. The variety used for the study was Kironi. The experiment was carried out in a randomized block design with three replications. The row spacing was 30 m. The plant spacing of 20, 25 and 30 cm were used for study. The nitrogen fertilizer doses under study were 80 kg N/ha (N1), 100 kg N/ha (N2), 120 kg N/ha (N3) and that of phosphorus 45 kg P₂O₅/ha (P1), 60 kg P₂O₅/ha (P2), 75 kg P₂O₅/ha (P3). The sources of nitrogen and phosphorus were urea and triple super phosphate respectively. At the time of land preparation, nitrogen and phosphorus were applied in the soil and nitrogen was applied to the field in two equal installments. All the intercultural operation were done in proper time. At the harvest time, 10 plants were selected at random from each plot to collect data on plant height and different yield contributing characters. Yield was recorded from the plot. The collected data was statistically analyzed and mean values were adjudged by Ducan's New Multiple Range Test (Steel and Torrie).

Source of Information: Bangladesh J. Sci. Ind. Res. 41(1-2), 33-40, 2006

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The findings of the study indicate that the plant spacing and nitrogen-phosphorus fertilizer application treatment improved the yield contributing character efficiency of sunflower leading to higher seed yield. So, the further research is needed in this direction with other varieties of sunflower to establish the present findings.

Knowledge Management: Journal