Phytoremediation potential of Leersia hexandra Swartz of copper contaminated soil and its enhancement by using agronomic management practices

2019 ◽  
Vol 127 ◽  
pp. 561-566 ◽  
Author(s):  
Hua Lin ◽  
Xue-Hong Zhang ◽  
Jun Chen ◽  
Liang Liang ◽  
Li-Heng Liu
Keyword(s):  
Contaminated Soil ◽  
Management Practices ◽  
Agronomic Management ◽  
Leersia Hexandra ◽  
Copper Contaminated ◽  
Leersia Hexandra Swartz

Oxalic Acid Enhances Remediation of Cr Contaminated Soil in Leersia Hexandra Swartz

2013 ◽  
Vol 807-809 ◽  
pp. 1559-1563
Author(s):  
Liang Liang Tan ◽  
Qing Jun Zhang ◽  
Ming Ze Xu ◽  
Hui Zhang ◽  
Shao Hong You
Keyword(s):  
Oxalic Acid ◽  
Contaminated Soil ◽  
Aerial Part ◽  
Above Ground Biomass ◽  
Ground Biomass ◽  
Leersia Hexandra ◽  
Soil Activity ◽  
Leersia Hexandra Swartz

This study examined the effect of oxalic acid on phytoremediation of Cr contaminated soil in Cr-hyperaccumulator Leersia hexandra Swartz (L. hexandra). The effects of 0, 40, 80, 120 mmol kg-1 oxalic acid (OA) on biomass, Cr accumulation and translocation of L. hexandra and four kinds of enzymes in 200,400 mg L-1 Cr contaminated soil planted L. hexandra were studied. The results showed that above-ground biomass was maximumly increased by 48.25% under OA treatment and OA also enhanced the plants ability to translocate Cr from roots to the harvestable aerial part which could contribute to phytoremediation. OA applied to soil planted L. hexandra with Cr stress maximumly increased dehydrogenase, sucrese, urease, peroxidase activities by 82.51%, 125.22%, 56.25%, 64.57% (p < 0.01). These results suggest that OA is an important amendment which can enhance the remediation capability and soil activity of Cr contaminated soil in L. hexandra.

SUMMARY: PAPERS PRESENTED AT INTERNATIONAL WORKSHOP ON INCREASING WHEAT YIELD POTENTIAL, CIMMYT, OBREGON, MEXICO, 20–24 MARCH 2006 Challenges to international wheat improvement

2007 ◽  
Vol 145 (3) ◽  
pp. 223-227 ◽  
Author(s):  
M. P. REYNOLDS ◽  
P. R. HOBBS ◽  
H. J. BRAUN
Keyword(s):  
Management Practices ◽  
International Workshop ◽  
Green Revolution ◽  
Wheat Yield ◽  
Developed Countries ◽  
Yield Potential ◽  
Agronomic Practices ◽  
Agronomic Management ◽  
Genetically Improved ◽  
New Generation

Wheat is grown on 210 million ha throughout the world producing approximately 600 million tonnes of grain (10 year average; FAO 2005) and providing on average one fifth of the total calorific input of the world's population (FAO 2003). For some regions such as North Africa, Turkey and Central Asia, wheat provides half of total dietary energy intake. Of the cultivated wheat area, half is located in less developed countries where there have been steady increases in productivity since the green revolution, associated with genetic improvements in yield potential, resistance to diseases and adaptation to abiotic stresses (Reynolds & Borlaug 2006a, b) as well as better agronomic practices (Derpsch 2005). Nonetheless, challenges to wheat production are still considerable, especially in the developing world, not only because of increased demand but also because of the increased scarcity of water resources (Rosegrant 1997; WMO 1997), ever more unpredictable climates (Fischer et al. 2002), increased urbanization and loss of good quality land away from agriculture (Hobbs 2007), and decreased public sector investment in agriculture and rural affairs (Falcon & Naylor 2005). To meet demand in a sustainable way, more resources are required to breed a new generation of genetically improved cultivars as well as implement resource-conserving agronomic management practices.

scholarly journals Bentonite application in the remediation of copper contaminated soil

2016 ◽  
Vol 11 (14) ◽  
pp. 1218-1226 ◽  
Author(s):  
Alves Tito Gilvanise ◽  
Helena Gar oacute falo Chaves L uacute cia ◽  
Carolina Feitosa de Vasconcelos Ana ◽  
Dantas Fernandes Josely ◽  
Orlando Carvallo Guerra Hugo
Keyword(s):  
Contaminated Soil ◽  
Copper Contaminated

scholarly journals The 1909 North Carolina Drainage Act and Agricultural Drainage Effects in Eastern North Carolina

2012 ◽  
Vol 128 (3-4) ◽  
pp. 59-73 ◽  
Author(s):  
Michael A. O'Driscoll
Keyword(s):  
North Carolina ◽  
Coastal Plain ◽  
Management Practices ◽  
Stream Water ◽  
Agricultural Drainage ◽  
Agricultural Lands ◽  
Stream Water Quality ◽  
Agronomic Management ◽  
Effective Drainage ◽  
Eastern North Carolina

Abstract Over the last two centuries, agricultural drainage in eastern North Carolina has transformed extensive wetlands to productive croplands. At the start of the drainage movement in the early 1900s, approximately 200,000 hectares (one half million acres) of drained agricultural lands existed in North Carolina. The 1909 North Carolina Drainage Act allowed for more extensive drainage projects. Drainage districts provided effective drainage outlets for farms and reduced flooding for the district. The districts dramatically increased the extent of drained lands during the 20th century. Currently, it is estimated that over 2 million hectares (five million acres) of drained agricultural lands exist in North Carolina, with the majority in the Coastal Plain. Agricultural drainage has contributed to huge gains in agricultural productivity in the region. However, this drainage has contributed to regional stream water quality impairment, altered stream hydrology, and wetland conversion. Over the last three decades, much work has been focused on reducing watershed nutrient exports in eastern North Carolina. Several major strategies have been used to decrease the environmental impacts of agricultural drainage, including: agronomic management practices; controlled drainage; riparian and wetland buffers; and channel alterations. Management of agricultural drainage during the 21st century will play a crucial role in regional stream, wetland, and coastal ecosystem health.

Phytoremediation of copper-contaminated soil by Artemisia absinthium: comparative effect of chelating agents

2021 ◽  
Author(s):  
Karen A. Ghazaryan ◽  
Hasmik S. Movsesyan ◽  
Tatiana M. Minkina ◽  
Dina G. Nevidomskaya ◽  
Vishnu D. Rajput
Keyword(s):  
Contaminated Soil ◽  
Chelating Agents ◽  
Comparative Effect ◽  
Artemisia Absinthium ◽  
Copper Contaminated
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