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Effect of Seed Stalk Pruning and Boron Fertilization on the Seed Yield of Summer Onion in the High BARInd Tract

Faruque Hossain
Scientific Officer
OFRD, BARI, Barind, Rajshahi

Abstract/ Executive Summary:

The study was carried out in the FSRD site, Kadamshahar, Godagari, Rajshahi during 2010-11 to find out the number of seed stalk and optimum boron dose for quality seed production of summer onion in High Barind Tract. The treatments comprised three seed stalk (S₁ = 4, S₂= 6 and S₃ = No pruning) with three levels of boron (B₁ = 0, B₂= 1 kg/ha and B₃ =2 kg/ha). Maximum seed yield (670.2 kg/ha) was produced in 6 seed stalks plant-1 followed by 4 seed stalks plant^-1(625.5 kg/ha) and minimum in no pruning treatment. Incase of B, higher seed yield (670.2 kg/ha) was obtained from application of 2 kg B ha^-1 which was identical to 1 kg B ha^-1(647.6 kg/ha). Regarding the interaction effect of seed stalks and boron fertilizer, maximum seed yield (712.9 kg/ha) was produced from 6 seed stalks/plant fertilized with 1 kg boron/ha which was statistically identical to 6 stalks plant^-1 fertilized with 2 kg boron ha^-1 and 4 stalks/plant with same dose of boron. But minimum seed yield 531.1 kg/ha was found from no pruning fertilized without boron.

Keywords: Seed stalk pruning, Boron fertilization, Seed yield, Summer onion

Location: Kadamshahar, Godagari, Rajshahi

Start Date: 03-11-2010

End Date: 10-04-2011

Program Area: Crop-Soil-Water Management

Commodity: Onion

Objectives:

To find out the number of seed stalk and optimum boron dose for quality seed production of summer onion in High Barind Tract.

Methodology:

The experiment was conducted at Farming System Research and Development (FSRD) site, Kadamshahar, Godagari, Rajshahi during 2010-11 to find out the number of seed stalk and optimum boron dose for quality seed production of summer onion in High Barind Tract. The soil of the experimental plots belongs to Amnura series under AEZ 26 having a pH value of 5.5, 0.98% organic matter, 0.06% total N, 9.36 ppm available P, 0.26 me% exchangeable K, 14.51 ppm available S, 1.05 ppm available Zn and 0.19 ppm available B. The treatments comprised three seed stalk (S₁ = 4, S₂= 6 and S₃ = No pruning) and three levels of boron (B₁ = 0, B₂ = 1 kg/ha and B₃=2 kg/ha). The experiment was laid out in a factorial randomized complete block design with three replications. Onion variety BARI piaz-5 was used in the study. The unit plot size was 2m x 3m. The bulbs were transplanted at the spacing of 25 cm x 20 cm on 3 November 2010. The soil of experimental plot was treated by Furadan @ 1 kg bigha^-1 before transplanting the bulbs. Rovral ( 2 g L^-1 water) and Bavistin (1 g L^-1 water) were used simultaneously after 8-10 days intervals during vegetative stage. The plot was irrigated 7 times after 7-10 days intervals before seed maturity stage. Other operations viz. mulching, weeding etc. were done in order to support normal plant growth. The crop was harvested at maturity on 10 to 15 April 2011 Observations were made on yield components from 10 randomly selected plants per plot. Yield data was taken as plot wise and thereafter converted into kg/ha. The data were analyzed statistically and the mean differences were adjudged by Duncan’s Multiple Range Test (Gomez and Gomez, 1984).

Source of Information: Annual Research Report, 2010-11

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

From the study it may be concluded that maximum seed yield of summer onion was produced from 6 stalks plant^-1 fertilized with 1 kg boron ha^-1 which was statistically identical to 6 stalks plant^-1 fertilized with 2 kg boron ha^-1 and 4 stalks plant^-1 with same dose of boron in the High Barind Tract soil.

Knowledge Management: Report/Proceedings