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Effect of Different Irrigation Levels and Row Spacing on Soil Salinity and Yield of Mustard in the Ganges Tidal Floodplain Soils of Bangladesh (2018-19)

O. A. Fakir
Soil Science Division, BARI, Joydebpur, Gazipur, Bangladesh

Dr. N. C. Shil
Soil Science Division, BARI, Joydebpur, Gazipur, Bangladesh

M. A. Rahman
Soil Science Division, BARI, Joydebpur, Gazipur, Bangladesh

I. Islam
Soil Science Division, BARI, Joydebpur, Gazipur, Bangladesh

M. Rahman
Soil Science Division, BARI, Joydebpur, Gazipur, Bangladesh

Abstract/ Executive Summary:

Irrigation is a vital factor for proper growth and development of mustard in dry season. An experiment was conducted at the Agricultural Research Station (ARS), BARI, Benarpota, Satkhira during the rabi season of 2018-2019 to observe the interaction effect of different irrigation level and row spacing on soil salinity and yield of mustard. There were three irrigation levels viz. T₁ = No irrigation (I0), T₂ = One irrigation at 22-25 DAS (I1), T₃ = Two irrigations at 22-25 DAS and 52-55 DAS (I2) in main plot and in sub plot three types of row spacing were examined where, S₁ = Line to line 20 cm, S₂ = Line to line 30 cm, S₃ = Line to line 40 cm spacing. Highest seed yield (1.39 t ha^-1) was recorded in T₂S₂ (combination with higher MBCR (1.90) level which was significantly higher than the rest of the treatment combinations. The lowest seed yield was recorded (1.14 t ha^-1) in T₁S₁. One irrigation at 22-25 DAS keeping line to line distance 30 cm would be a better management practice for increasing the yield of mustard.

Keywords: Irrigation, Soil salinity, Musrard

Location: ARS, BARI, Benarpota, Satkhira

Start Date: 02-09-2018

End Date: 00-00-2019

Program Area: Crop-Soil-Water Management

Commodity: Supplemental irrigation, Mustard

Objectives:

To study the impact of suitable row spacing and optimum irrigation levels on the performance of the mustard.

Methodology:

Experimental site and design: The experiment was conducted at the Agricultural Research Station (ARS), BARI, Benarpota, Satkhira during the rabi season of 2018-2019 to observe the interaction effect of different irrigation level and row spacing on soil salinity and yield of mustard. The soil belonged to the AEZ-11 and AEZ-13. The land topography was medium low. The soil of the experimental field is clay loam in texture with pH 7.2 were recorded. There were three irrigation levels viz. T₁ = No irrigation (I₀), T₂ = One irrigation at 22-25 DAS (I₁), T₃ = Two irrigations at 22-25 DAS and 52-55 DAS (I₂) in main plot and in sub plot, three dimension of row spacing were examined where, S₁ = Line to line 20 cm, S₂ = Line to line 30 cm, S₃ = Line to line 40 cm spacing. The crop variety was BARI Sharisha-14. The experiment was tested in RCBD (2 factor) with three replications. Unit main plot size was 4.6 ´ 2.5m and sub-plot size was 1.2m ´ 2.5m. At every 15 days interval soil salinity (dS/m) was measured by EC meter (HANNA: HI 9835). Data on yield and yield components were recorded and analysed statistically using “Software R” program. Seed sowing & crop management: The experimental plots were fertilized with 170-85-150 kg ha^-1 TSP, MoP and Gypsum, respectively. All the fertilizers were applied as basal except Urea. Seeds were sown in 11 November, 2018 in row to row distance of 30 cm. Three irrigations were applied during the growing period. Weeding was done at 14 days after sowing followed by thinning to keep plant to plant distance of 10 cm. Disease and insect pests were always well controlled using suggested applies (BARI, 2017). The crop was harvested at the time of maturity.

Source of Information: Annual repor 2018-2019, BARI, Gazipur, Bangladesh

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

One irrigations at 22-25 DAS keeping line to line distance at 30 cm would be a better management practice for increasing the yield of mustard. It is the 3^rd year of experiment.

Knowledge Management: Report/Proceedings