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Pteris Vittata Inter-planting for Trapping of Arsenic Accumulation Into Potato

U. Mayda
Dept. of Botany, Jahangirnagar University, Savar, Dhaka, Bangladesh

Rasheda Yasmin Shilpi
Dept. of Botany, Jahangirnagar University, Savar, Dhaka, Bangladesh

T. Taufique
Dept. of Horticulture, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh

H. Mehraj
The United Graduate School of Agricultural Sciences, Ehime University, Tarami, Matsumaya, Ehime, Japan

A.F.M. Jamal Uddin
Dept. of Horticulture, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh

Abstract/ Executive Summary:

An experiment was conducted to trap arsenic accumulation into potato plant by Pteris vittata inter-planting. Experiment consisted three different density of the trap plants viz. P₀: No P. vittata (control); P₄: four P. vittata plant per m² and P₈: eight P. vittata plant per m². Inter-planting of four P. vittata per m² reduced 95.94 % and eight P. vittata per m² reduced 97.01% arsenic accumulation into potato over control. Maximum yield was found from P₄ (359.00 g/plant) which was statistically similar with P₃ (343.80 g/plant) while minimum was found from P₀ (316.50 g/plant). Highest amount of arsenic accumulation was found from P₁ (No P. vittata interplanting) in potato tuber flesh (0.20 ppm), tuber peel (5.46 ppm) and plant body (43.74 ppm). P. vittata inter-planting (both P₄ and P₈) showed least arsenic accumulation in potato tuber flesh (0.01 and 0.02 ppm in P₄ and P₈ respectively), tuber peel (0.44 and 0.41 ppm in P₄ and P₈ respectively) and plant body (1.52 and 1.40 ppm in P₄ and P₈ respectively) over control. So it can be suggested that inter-planting of P. vittata can trap arsenic from soil to enter into food crops. Based on the findings of the current study it can be suggested to inter-plant four P. vittata per m²area.

Keywords: Solanum tuberosum, Pteris vittata, Inter-plant, Arsenic entry

Location: Department of Horticulture of the Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh and Department of Botany of the Jahangirnagar University, Savar, Dhaka-1342

Start Date: 00-10-2013

End Date: 00-04-2014

Program Area: Crop-Soil-Water Management

Commodity: Arsenic

Objectives:

The study was conducted to lower the arsenic accumulation into potato using P. vittata as trap.

Methodology:

Location and duration of the experiment - An experiment was conducted at Department of Horticulture of the Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh and at the Department of Botany of the Jahangirnagar University, Savar, Dhaka-1342, Bangladesh from October 2013 to April 2014. Arsenic contaminated soil - Arsenic was applied in form of Arsenic trioxide (As2O3) @ 50 ppm at 7 days before planting of potato which was considered as arsenic contaminated soil. Treatments and design - P. vittata was inter-planted with rice into pot as trap to mitigate arsenic accumulation into potato plant. Experiment consisted three different density of the trap plants viz. P₀: No P. vittata (Control); P₄: four P. vittata plant per m² and P₈: eight P. vittata plant per m² following completely randomized design with three replication. Trap plants were planted at the time of planting of rice plants. Pot size - The pot size was 1.5 m in length, 0.5 m in width and 0.5 m in depth. Data collection - Data were collected on plant height, leaves number, leaf area, number of stems per plant, stem diameter, number of tubers, average weight of individual tuber, yield, arsenic accumulation by tuber flesh and peel, arsenic accumulation by plant body, arsenic accumulation by Pteris vittata and protection of arsenic accumulation into potato by P. vittata over control. Chemical analysis for arsenic - Plant biomass was measured by using precision balance after drying. After growing, plants were collected and dried. After drying, samples were smashed by mortar and pastel machine. The arsenic analysis for was performed by using “Atomic Absorption Spectrometer”, where use of argon for carrier gas and arsenic was melted by 925ºC; was approved by ISO organization in Bangladesh Council of Scientific Research Institute (BCSIR), Dhaka, Bangladesh. 50 times dilution - 5 ml conc. HCl was taken at 50 ml volumetric flasks for transferring arsenic into arsenic trioxide and a little bit of distilled water was added. Then 1ml solution was taken very carefully from each volumetric flask to avoid bubble and KI (01 gm) wash added in solution with 150 ml distilled water. After that 0.5 gm sample was taken in volumetric flask and mixed distilled water up to 50 ml and solution turned into yellow color. Another volumetric flask made blank solution, where contain only HCl, KI and distilled water for arsenic analysis. 1000 time dilution - 2 ml solution was taken into 500 volumetric flasks, mixed with distilled water up to 500 ml and shaken very carefully. Then, 05 ml solution was taken into 250 ml volumetric flask and mixed with distilled water up to 250 ml. Again, 05 ml solution from 250 ml solution was taken into 25 ml volumetric flask then 2.5 ml HCl and 2.5 ml KI was added and mixed distilled water, shaking was done very smoothly until turn it into yellow color. Standard solution arsenic was added with HCl 2, 5, 10, 15, 20 ppb respectively. 5000 time dilution - Similar to the 1000 time dilution. But 04 ml solution was taken in case of 2 ml. 05 ml HCl and KI was added into 5000 ml volumetric flask, solution was made into 25 ml and 05 ml was taken in flask. Statistical analysis - Data were statistically analyzed using MSTAT-C computer programme. Difference between treatments was assessed by Least Significance Difference (LSD) test at 5% level of significance (Gomez and Gomez, 1984).

Source of Information: International Journal of Biosciences | IJB |; ISSN: 2220-6655 (Print), 2222-5234 (Online); Vol. 8, No. 1, p. 1-7, 2016

Article Link (Online Journal): http://www.innspub.net

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Inter-planting of P. vittata with potato dramatically reduced arsenic accumulation into the potato flesh, peel and plant body while P. vittata accumulated most of the arsenic from soil. Current study confirmed that it is possible to trap arsenic accumulation into potato by inter-planting of P. vittata. However, more experiment should be conducted to clarify this finding.

Knowledge Management: Journal