Reduction of arsenic entry into rice from arsenic contaminated soil using Pteris vittata as trap plant

Abstract

An experiment was conducted to reduce the entrance of arsenic on rice plant. Experiment consisted three different density of the trap plants viz. P1: No P. vittata (control); P2: four P. vittata plant per m 2 and P3: eight P. vittata plant per m 2. Inter planting of four P. vittata per m 2 reduced 96.24 % and eight P. vittata per m 2 reduced 97.01% arsenic accumulation into rice. Maximum yield was found from P2 (34.2 g per plant) which was statistically similar with P3 (32.9 g per plant) while minimum was found from P1 (30.0 g per plant). Highest amount of arsenic accumulation was found from P1 in rice grain (1.55 ppm), husk (5.57 ppm) and straw (39.78 ppm). Arsenic accumulation was found in rice grain (0.02 ppm in both P2 and P3), husk (0.60 and 0.58 ppm in P2 and P3 respectively) and straw (1.05 and 1.00 ppm in both P2 and P3 respectively). Concerning both yield of rice and arsenic concentrations in rice plant, it can be recommended to interplant four P. vittata plant per m 2 area as a trap plant to reduce arsenic entrance into rice plant from soil which can keep away of arsenic pollution in food chain.

Pteris Vittata Inter-Planting for Trapping of Arsenic Accumulation into Potato

“…due to the As-contaminated irrigation water (Santra et al, 2013). Highest arsenic accumulation in tuber peel was found from P0 (5.46 ppm) and lowest from P4 and P8 (0.44 ppm and 0.41 ppm respectively) whereas P4 and P8 were found to be statistically identical ( (Mayda et al, 2015). Hyperaccumulators are plants that can take up and concentrate greater than 0.1% of a given element in their tissue.…”

“…Arsenic is toxic to most plants at higher concentration (Marin et al, 1993) and inter-planting of P. vittata caused better plant growth by reducing soil arsenic toxicity for rice (Mayda et al, 2015). It interfered with metabolic processes and inhibited plant growth and development through arsenic induced phytotoxicity.…”

“…So it is important to reduce or stop the arsenic accumulation into this vegetable crop. Inter-planting of P. vittata with rice plant reduces arsenic entrance into rice plant from soil (Mayda et al, 2015). So it may be possible to reduce arsenic accumulation into the potato plant by phytoremediation process using P. vittata interplanting into potato field.…”

An analysis of arsenic toxicity's origins, manifestations, and remediation

“…Phytoremediation and PGPB (Plant Growth Promoting Bacteria) remediation are some of the methods used under bioremediation for mitigation of As toxicity (Rojas-Solis et al, 2023). Mayda et al (2014) conducted an experiment from October 2012 to April 2013 in the Department of Botany, Jahangirnagar University, Dhaka, Bangladesh. They studied the process in four non-edible ferns and four soil As concentrations.…”

“…They studied the process in four non-edible ferns and four soil As concentrations. Using non edible plant material for mitigating As, they showed that these plants help by stopping As toxicity from entering the food chain (Mayda et al, 2014). Out of the four ferns observed, Pteris vittate L. was found as the As hyperaccumulating plant.…”