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Effect of Chemicals and Seed Bulb Storage Period on the Seed Production of Summer Onion

M. M. ZAMAN
Senior Scientific Officer
Regional Spices Research Centre, BARI, Magura

Abstract/ Executive Summary:

A field experiment was carried out at Regional Species Research Centre, BARI, Magura during October 2010 to March 2011 to determine the optimum doses of chemicals and suitable bulb storage period for successful seed production of summer onion.Twelve treatment combinations comprizing three chemicals viz. C1= 0.5% KNO₃+0.5 % Carbendazim, C2= 1.0% KNO₃+1.0 % Carbendazim, C3=1.5% KNO₃+1.5 % Carbendazim, and four Bulb storage period viz. P1= 45 days, P2=30 days, P3= 15 days. P4=fresh bulb were used in a factorial randomize block design with three replications. BARI piaz-3 was taken as test crop. The unit plot size was 3.0mx1.5m maintaining the spacing of 30cmx2cm. Significantly higher yield (558.06 Kg/ha) was recorded from the treatment combination of chemicals use at the rate 1% KNO₃ + 1% carbendazim and 45 days bulb storage period of summer onion.

Keywords: CHEMICALS, SEED BULB, SEED PRODUCTION, STORAGE PERIOD, SUMMER ONION.

Location: Regional Spices Research Centre, BARI, Magura

Start Date: 00-10-2010

End Date: 00-03-2011

Program Area: Postharvest and Agro-processing

Commodity: Onion

Objectives:

To identify the proper bulb storage period and optimum dose of chemicals for successful seed production of summer onion.

Methodology:

The experiment was conducted at Regional Species Research Centre, BARI, Magura during October 2010 to March 2011 to determine the optimum doses of chemicals and suitable bulb storage for successful seed production of summer onion. Twelve treatment combinations comprizing three chemicals viz. C1= 0.5% KNO₃+0.5 % Carbendazim, C2= 1.0% KNO₃+1.0 % Carbendazim, C3=1.5% KNO₃+1.5 % Carbendazim, and four Bulb storage period viz. P1= 45 days, P2=30 days, P3= 15 days. P4=fresh bulb were used in a factorial randomize block design with three replications. BARI piaz-3 was taken as test crop. The unit plot size was 3.0mx1.5m maintaining the spacing of 30cmx2cm. The field was fertilized with recommended doses of fertilizer. The onion bulbs were planted on 21 October, 2010. Proper agronomical practices were applied during the cropping season. The crop was harvested on 17 March and 19 March, 2011. Data on yield and yield components were taken and analyzed.

Source of Information: Research Report 2011. Spices Research Center, BARI, Shibganj, Bogra

Article Link (Online Journal):

Funding Source:

1. Government

Budget: 22,000/--

Total Budget (Tk.) : 22,000/--

Achievement/Findings:

The morphological data revealed that the highest plant height (84.0 cm) and number of seeds per umble (304.26) were observed in treatment C2P1 and the lowest 75.30 cm and 1.52 were found respectively in C1P4. The number of flower stalk and seed yield per plant was also the height in the treatment C2P1 i.e. 4.20 and 3.11 g respectively. Thousands seed weight was also the maximum (3.48g) in the treatment and the highest seed yield (558.0) Kg/ha was recorded from the treatment C2P1 and the lowest (119.14 kg/ha) was found in the treatment C3P4. Significantly higher yield (558.06 Kg/ha) was recorded from the treatment combination of chemicals use at the rate 1% KNO₃ + 1% carbendazim and 45 days bulb storage period of summer onion. The result shows that uses of chemical at the rate of 1% KNO₃+ 1% carbendazim along with 45 days old seed bulb is effective for successful seed production of summer onion in Magura region.

Knowledge Management: Report/Proceedings