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Influence of Sowing Date Induced Temperature on Flowering and Seed Yield of French Bean (phaseolus Vulgaris L.) Varieties

S.S.Kakon
SSO
Agronomy Division, BARI, Gazipur

M.A.Aziz
CSO
Agronomy Division, BARI, Gazipur

Abstract/ Executive Summary:

A field experiment was conducted at the research field of Agronomy Division, BARI, Joydebpur, Gazipur during rabi season of 2013-14 to evaluate the flowering behavior and seed yield of French bean varieties (BARI Jharsheem-1 , BARI Jharsheem-2 and BARI Jharsheem-3) in temperature variation at different sowing dates (November 25, December 10, December 25 and January 10). The result showed that sowing dates based temperature variation significantly affects the crop growth, TDM production and seed yield of French bean. 25 November to 10 December sowing performed better and with the advancement of sowing dates the temperature increased, reduced the crop growth duration and decreased the flower production which ultimately produced the lowest seed yield. French bean sown on 25 November to 10 January showed the greater variability with respect to the ?owering start date and ?owering period length as well as the number of pods set on a plant. Results revealed that 25 November to 10 December would be the optimum time of sowing for maximum seed yield of French bean for both BARI Jharsheem-1 and BARI Jharsheem-2 varieties. Interaction effect of variety and date of sowing was found insignificant.

Keywords: Temperature, Sowing time. Flowering, Seed yield , French bean

Location: Agronomy Division, BARI, Joydebpur, Gazipur

Start Date: 00-00-2013

End Date: 00-00-2014

Program Area: Crop-Soil-Water Management

Non-commodity: Performance

Objectives:

To evaluate the flowering pattern and seed yield under different temperature induced from different sowing time.

Methodology:

The experiment was conducted at the Agronomy research field of Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur during rabi seasons of 2013-2014. The soil belongs to the Chhiata Series under Agro-Ecological Zone-28 (AEZ-28). The soil was silty clay loam and acidic in nature (pH 6.1). The treatments comprised four sowing dates viz. 25 November, 10 December, 25 December and 10 January and three varieties like BARI Jharsheem-1, BARI Jharsheem-2 and BARI Jharsheem-3. The experiment was laid out in a factorial randomized complete block design (RCBD) with three replications. The unit plot size was 3.0 m x 3.0 m. The crop was fertilized with 120-40-60 -12-3 N-P₂O₅-K₂O-S-Zn /ha, respectively (FRG, 2012). Half of N and full doses of other fertilizers were applied at the time of final land preparation and the rest urea was top dressed 35 days after sowing (DAS). Seeds was treated with vitavax and sown continuously in 30 cm apart rows. Plant to plant distance was maintained by 15 cm . Hand weeding was done at 25 and 40 days after sowing (DAS). Pre sowing irrigation was given to the crop for uniform emergence. The crops were attacked by cutworm (Agrotis ipsilon) and hairy caterpillar (Spilarctia obliqua) at early growth (vegetative) stage. The cutworm was controlled through hand picking Perfecthion 40EC @ 2.0 ml L^-1of water was sprayed at an interval of 7-10 days for 3 times to control hairy caterpillar. At each harvesting time, five plants were harvested randomly from each plot to record the data on yield components. Pod yield was recorded from an area of 3 m x 2 m avoiding border effect. Data on different parameters were subjected to analysis of variance and the treatment means were compared by Least Significant Difference (LSD) test.

Source of Information: Annual Research Report 2013-2014, Agronomy Division, BARI, Gazipur.

Article Link (Online Journal):

Funding Source:

1. Government

Budget: 20,000/-

Total Budget (Tk.) : 20,000/-

Achievement/Findings:

French bean sown from 25 November to 10 December showed the greatest variability with respect to the start and length of ?owering periods as well - as the number of pods set on a plant. It might be concluded that 25 November to 10 December would be the optimum sowing time for BARI Jharsheem-1 and BARI Jharsheem-2.

Knowledge Management: Report/Proceedings