Agricultural Research Management Information System

Home
Research Summary
Search
About Us
- ARMIS
- Brochure
Contact Us
Report
User Request
Data Input
Help
- Operation Manual
  - PDF
  - Video
- Program Area & Commodity
We have reached 37600 number of research entries at this moment.

- Logout

Research Detail

Home
Research
Detail

Effect of Post-flowering Salinity and Water Stress on Dry Matter Production and Yield of Soybean

M.S.A. Khan
SSO
Agronomy Division, BARI, Gazipur

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

Abstract/ Executive Summary:

The experiment was conducted in a vinyl house of the Agronomy Division, Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur, during robi season of 2014 to find out the most severe post-flowering growth stage of soybean and to assess the yield reduction under salinity and water stresses by imposed salt stress (100 mM NaCl) and water stress (70% depletion of available water) at different post flowering stages of 4^th to 6^th , 6^th to 8^th , 8^th to 10^th and 10^th to 12^th weeks after emergence. Shoot dry weight under salt stress was identical with control but under water stress significantly differed from control at 4^th to 6^th weeks after emergence. The results became reverse in terms of seed yield. Among the stages, 4^th to 6^th weeks after emergence of soybean was found the most severe to salt for seed yield reduction (82.71%). Both the salt stress and water stress at 6^th to 8^th and 8^th to 10^th weeks after emergence also alarming for seed yield.

Keywords: Post-flowering salinity, Water stress, Dry matter and yield, Soybean

Location: Agronomy Division, BARI, Joydebpur, Gazipur,

Start Date: 22-01-2014

End Date: 30-05-2014

Program Area: Risk Management in Agriculture

Commodity: Soybean

Objectives:

To find out the most severe post-flowering growth stage of soybean and to assess the yield reduction under salinity and water stresses at different growth stages.

Methodology:

The experiment was conducted in a vinyl house of the Agronomy Division at Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur during robi season of 2014. BARI Soybean-6 was used for testing salt and water stress tolerance at different post flowering stages. Seeds were washed several times with tap water for surface cleaning then sown in soil medium on 22 January 2014 in plastic pots having 30 cm in height and 24 cm inner diameter. Each pot contained 12 kg air dried sandy loam soil. Chemical fertilizers of 0.30 g urea, 0.90 g TSP, 0.60 g MOP and 0.60 g Gypsum per pot were also incorporated into the soil before sowing. Soybean plants were emerged on 30 January. After the emergence and establishment, two uniform healthy seedlings per pot were allowed to grow for four weeks (28 DAE) in equal environment. The treatments were; Control (T₁), Salt stress with irrigated 100 mM NaCl at 4^th to 6^th weeks after emergence (T₂), Water shortage (irrigated with 70% depletion of available soil water when wilting sign developed) at 4^th to 6^th weeks after emergence (T₃). Salt stress with irrigated 100 mM NaCl at 6^th to 8^th weeks after emergence (T₄), Water shortage at 6^th to 8^th weeks after emergence (T₅). Salt stress with irrigated 100 mM NaCl at 8^th to 10^th weeks after emergence (T₆), Water shortage at 8^th to 10^th weeks after emergence (T₇). Salt stress with irrigated 100 mM NaCl at 10^th to 12^th weeks after emergence (T₈), Water shortage at 10^th to 12^th weeks after emergence (T₉). The control groups of plants were irrigated with tap water only. The experiment was arranged in CRD with 8 replications.Yield and yield contributing characters of the soybean plants under different treatments were recorded from the remaining pots after maturity.

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:

From the above findings, it may be concluded that 4^th to 6^th weeks after emergence of soybean was the most severe post- flowering growth stage to salt for seed yield. Both the salt stress and the water stress at 6^th to 8^th and 8^th to 10^th weeks after emergence also alarming for seed yield.

Knowledge Management: Report/Proceedings