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Effects of Waterlogging on Wheat (triticum Aestivum L.) Production

M. A. K. Mridha
IWM Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur-170I

M. H. Rashid
FMPE Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur-170I

M. S. I slam
IWM Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur-170I

M. S. Alam
IWM Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur-170I

M. A. Hossain
Farm Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur-170I

Abstract/ Executive Summary:

Wheat (Triticum aestivum L.). cv. Akbar was tested with three durations viz. 24, 48 and 72 hours of waterlogging condition at each of three different stages of growth such as 21, 35 and 50 days after sowing (DAS) along with normal irrigation practices in grey terrace soil of Joydebpur during 1997-98 and 1 998-99. Three irrigation at 3 different stages of growth produced the highest yields of 3.55 t/ ha in 1997-98 and 4.19 t/ha in 1998-99. Waterlogging of T₂ hours duration at crown root initiation (CRI ) stage produced the lowest yields ( 1.41 t/ ha in 1997-98 and 2.12 t/ha in 1998-99). Plant heights (75.1 cm in 1997-98 and 82.6 cm in 1998-99) and grains per spike (35 in 1997-98 and 47 in 1998-99) were also found to be the highest with normal irrigation. The CRI stage was found to be the most sensitive to waterlogging. Yields of wheat were found to decrease with the increased duration of waterlogging at all stages of growth. In 1997-98, total water of 268 mm including an effective rainfall of 61 mm was consumed with normal irrigation. In 1998-99. there was no rainfall and only 264 mm water was applied.

Keywords: Waterlogging, Wheat, Yield.

Location: Bangladesh Agricultural Research Institute ( BARI), Joydebpur, Gazipur

Start Date: 00-00-1997

End Date: 00-00-1999

Program Area: Crop-Soil-Water Management

Commodity: Wheat

Objectives:

To find out the effect of waterlogging at different growth stages on the yield of wheat.

Methodology:

The experiment was conducted on wheat at the Bangladesh Agricultural Research Institute ( BARI) Joydebpur. Gazipur during 1997-98 and 1998-99 with a split plot design having three replications. The unit plot size was 3 m x 1.5 m ( 4.5 sq. m). ROw to row and plant to plant spacings were 20 cm and 5 cm. respectively. The soil was a silty clay loam having a bulk density of 1.48 g/cc and field capacity of 27 per cent. Fertilizers at the rate of 150. 60. 40 and 20 Kg/ha of P₂0₅, K₂0 and S, respectively, were used according to the recommended doses reported by BARC (1989). Desired waterlogging conditions were maintained at the following stages: Growth stages S₁ = Crown root initiation (CRI ) stage (21 days after sowing, DAS) S₂ = Maximum tillering stage (35 DA) S₃ = Booting stage (50 DAS) Waterlogging treatments T₁ = No waterlogging (irrigation at 3 growth stages) T₂ =Waterlogging for 24 hours T₃ = Waterlogging for 48 hours T₄ = Waterlogging for 72 hours. Measured water-can was used to measure the irrigation water. At 20, 35 and 50 days after sowing (DAS), the rooting depths were considered as 30, 45 and 60 cm respectvely (Mridha et al., 1998). Seeds were sown on 23 November 1997 and 6 December 1998 and the crop was harvested on 17 and 25 March of 1998 and 1999 respectively. Plant height, grains per spike, 1000 grain weight and grain yields were recorded during the harvest time. The crop required 115 and 110 days for maturity in 1997-98 and 1998-99 respectively.

Source of Information: Journal of the Institution of Engineers, Bangladesh Agricultural Engineering Division, Vol. 27/AE. No. 1, Dec. 2000

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Grain yields of wheat were found to decrease with the increased duration of waterlogging. Waterlogging of any duration is harmful to wheat production. However. crown root initiation (CRI) stage was found to be the most sensitive stage to waterlogging followed by tillering and booting stages.

Knowledge Management: Journal