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Effect of Bulb Size and Plant Spacing on the Seed Yield of Onion

S. S. Choudhury
Horticulture Research centre, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur

S. R. Saha
Horticulture Research centre, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur

A. K. M. Amazd Hossain
Horticulture Research centre, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur

M. M. Haque
Horticulture Research centre, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur

Abstract/ Executive Summary:

The effect of different plant spacings, such as 30 cm X 20 cm, 30 cm X 15 cm and 30 cm X 10 cm and bulb size viz., 13g ± 2g, 8g ± 2g and 3g ± 2g on the seed yield of onion were studied at the farm of Bangladesh Agricultural Research Institute, Gazipur. Large bulbs (13g ± 2g) and closer spacing of 30 cm X 10 cm produced maximum yield of onion seeds of 299.7 kg/ha.

Keywords: Seed yield, Onion, Bulb size, Plant spacing

Location: Bangladesh Agricultural Research Institute, Gazipur

Start Date: 00-11-1987

End Date: 00-04-1988

Program Area: Crop-Soil-Water Management

Commodity: Onion

Objectives:

To investigate the effect of bulb size and plant spacing on growth and seed yield of onion.

Methodology:

The experiment was carried out at the farm of the Bangladesh Agricultural Research Institute, Gazipur during the period from November 1987 to April 1988 to maximize onion seed yield of cv. Taherpuri with proper adjustment of bulb size and spacing. The experiment was laid out in a Factorial RCB design with three replications. There were three bulb sizes viz., large (13g ± 2g), medium (8g±2g) and small (3g±2g) and three spacings viz., 30 cm x 20 cm, 30 cm x 15 cm and 30 cm x 10 cm. There were nine treatment combinations. Unit plot size was 3mx 1.5m.Bulbs were planted on 3 November 1987. The crop was fertilized @ cowdung 5 tons per hectare; urea, TSP and MP@ 260, 130 and 160 kg per hectare, respectively. The entire quantity of cowdung and TSP were applied during final land preparation. Half of urea and MP were applied 30 days after planting and the remaining quantities were applied 60 days after planting. Irrigation along with other intercultural operations were done as and when needed. Harvesting was done from 16 April to 20 April 1988.

Source of Information: Bangladesh Hort. 20(2) : 31-34, 1992; ISSN 0379-4288

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The combined effect of bulb size and spacing revealed that the large sized bulb (13g ± 2g) at closer spacing of 30 cm X 10 cm produced the highest yield of onion seed (299.7 kg/ha. Whereas, lowest seed yield (123.3 kg/ha) was obtained from small sized bulbs (3g ± 2g) with wider spacing of 30 cm X 20 cm.

Knowledge Management: Journal