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Effects of Alternate Water Source on the Yield and Nutrient Composition of Stem Amaranth in the Coastal Region of Bangladesh

Farzana Yasmin
Department of Soil, Water and Environment, University of Dhaka, Dhaka-1000, Bangladesh.

Sayma Khanom
Department of Soil, Water and Environment, University of Dhaka, Dhaka-1000, Bangladesh.

Shahid Akhtar Hossain
Department of Soil, Water and Environment, University of Dhaka, Dhaka-1000, Bangladesh.

Abstract/ Executive Summary:

The field experiment was set up at Gangarampur union of Batiaghata thana in Khulna district to evaluate the growth and nutrient composition on stem Amaranth by irrigating with different water sources during January 2014 to July 2014. All the growth parameters of the crop were significantly improved for treated water. Whereas, N, P, and K uptake respectively were increased and S was decreased for treated water (T₂) compared to control (T₀). Carbohydrate and total dietary fiber (TDF) is increased while protein, fat, ash and energy in the leaf of stem Amaranth is decreased by irrigating with T₂ water. Moreover, carbohydrate content is increased in treated water (T₂) but protein, fat, ash, TDF and energy in the stem of stem Amaranth is decreased. EC, pH, Na, K, Ca and Mg of the soil were decreased markedly by applying treated water (T₂) and other nutrients present in soil also varies. From the study, it can be concluded that the best alternate source of water for irrigation is MAR water (T₂) which can improve plant nutrient content and uptake and soil nutrient status.

Keywords: Managed aquifer recharge, Nutrient composition, Stem amaranth

Location: Gangarampur union of Batiaghata thana in Khulna district

Start Date: 00-01-2014

End Date: 00-07-2014

Program Area: Crop-Soil-Water Management

Commodity: Amaranth

Objectives:

To evaluate the growth and nutrient composition on stem Amaranth by irrigating with different water sources.

Methodology:

The field experiment was set up at Gangarampur union of Batiaghata thana in Khulna district to evaluate the growth and nutrient composition on stem Amaranth by irrigating with different water sources during January 2014 to July 2014. Initial soil analysis by standard methods showed that the experimental field soil has a pH of 7.4, EC of 0.215 dS/m and contains 90 mg/kg available N with 1.09% organic carbon, 16 mg/kg available P, 7.36% available K, 0.16% available S, 12.86% Na, 8.28% Ca and 0.78% Mg. Experiment was laid out in CBD with 3 replications i.e., whole experimental area was divided into 3 blocks, each block representing 1 replication. Unit plot size was 2.0 m × 2.0 m and space between the plots, blocks and around the field was 1m. Total unit plot was 9 and total experimental area was 10m × 10m. Two types of water treatments were used in the experiment. One was saline water (T₁), which has been collected from the tube-well and second one was the treated water (T₂), which has been collected from MAR. Another observation was made considering the field condition of the pl ots which was considered as control (T₀) and no water was added from outside during the experiment in this treatment plot. Different physico- chemical properties of the treatment water were shown in this study. Two treatments were distributed randomly in 6 plots and 3 plots were used to observe field condition (control). At the beginning of the experiment, the land was well prepared before sowing seed and no fertilizers were applied. Seeds of stem Amaranth were broadcasted on 28 March, 2014. After one week of sowing, stem Amaranth was germinated. Weeding and thinning was done as per requirement for the healthy growth of seedlings. The plots were properly watered as per treatment. Amount of water applied to each field was uniform. As the field experiment was based on water treatment, rain water was not allowed to fall or seep to the T₁ and T₂ treatment plots. So, each plot was surrounded with aluminium sheet of 15 cm height and placed all around the plots. A bamboo made rain shed was used which was covered with a polythene sheet during the rain. The crop was harvested after 45 days of sowing . At the time of harvest, 5 plants from each plot was selected randomly and fresh weight of the plants, height, base diameter, dry weight of the plants were noted. Again, 20 plants were randomly collected from each pl ot and brought to the laboratory for analyzing nutrient uptake, nutrient composition and mineral content. In this study, the edible portion (leaf and stem) of plant samples were analyzed separately as per consumption pattern. Standard analytical methods were used to analyze soil and plant samples. Nutrient compositions of the plants were analyzed. Statistical analysis was made by using SPSS (version 20).

Source of Information: Bangladesh J. Sci. Res. 28(1): 43-50, 2015 (June).

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

All the growth parameters of the crop were significantly improved for treated water. Whereas, N, P, and K uptake respectively were increased and S was decreased for treated water (T₂) compared to control (T₀). Carbohydrate and total dietary fiber (TDF) is increased while protein, fat, ash and energy in the leaf of stem Amaranth is decreased by irrigating with T₂ water. Moreover, carbohydrate content is increased in treated water (T₂) but protein, fat, ash, TDF and energy in the stem of stem Amaranth is decreased. EC, pH, Na, K, Ca and Mg of the soil were decreased markedly by applying treated water (T₂) and other nutrients present in soil also varies. From the study, it can be concluded that the best alternate source of water for irrigation is MAR water (T₂) which can improve plant nutrient content and uptake and soil nutrient status.

Knowledge Management: Journal