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Effects of Arsenic and Phosphate on Plant Biomass and Their Accumulation by an Arsenic Hyperaccumulator Pteris Vittata L
논문 기본 정보
- 저자정보
- 발행연도
- 2014.6
- 수록면
- 46 - 46 (1page)
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Effects of Arsenic and Phosphate on Plant Biomass and Their Accumulation by an Arsenic Hyperaccumulator Pteris Vittata L
초록·키워드
Arsenic is ubiquitous in the environment and is derived from both natural and antropogenic sources. Arsenic can cause damage to human health through the food chain and water supply and As contaminated soil is a major source of contamination in the food chain and water supply (Warren et al., 2003). Previous research has shown that Pteris vittata L. (Chinese Brake fern) was able to accumulate arsenic in their fronds even in the presence of other metals although at a lower rate (Fayiga et al., 2004). It also has high tolerance to arsenic and efficient mechanisms of arsenic detoxification. Phosphate has been shown to increase arsenic availability in the soil leading to the increase in plant uptake (Peryea, 1998). Therefore, P-induced metal stabilization and arsenic solubilization expected from the addition of phosphate fertilizers in soils should enhance arsenic uptake by Pteris vittata L. An experiment was carried out to determine the effect of arsenic and phosphate on plant biomass and uptake of arsenic by using different rates and forms of phosphates material by Pteris vittata L. The pot experiment was carried out in the glasshouse unit of Universiti Putra Malaysia, Serdang, Selangor, Malaysia. The experiment consisted of 9 treatments including control. Plants were treated with different concentrations of phosphate which are 0, 12.5, 25.0, 50.0 and 75.0 kg P ha¯¹ in solid form of Triple Superphosphate (TSP) and liquid form of potassium dihydrogen phosphate (KH₂PO₄). Each of the polybag was fertilized with basal dose of 125 mg N kg¯¹ (NH₄NO₃) and 175 mg K kg¯¹ (KCl). After one-week of equilibration, a healthy fern with 5 to 6 fronds each was planted in each pot containing 15 kg of soil for 90 days in the glasshouse. Each treatment will be replicated four times and arranged in a randomized complete block design. Soil moisture content was maintained at field capacity. The plants were watered twice per day with deionized water. After 90 days of planting, fer ... 전체 초록 보기
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