• Publications
  • Influence
Evaluation of extractants for estimation of the phytoavailable trace metals in soils.
Despite its environmental (and financial) importance, there is no agreement in the literature as to which extractant most accurately estimates the phytoavailability of trace metals in soils. A largeExpand
  • 355
  • 52
Effect of Cu Toxicity on Growth of Cowpea (Vigna unguiculata)
Accurate determination of the rhizotoxicity of Cu in dilute nutrient solutions is hindered by the difficulty of maintaining constant, pre-determined concentrations of Cu (micromolar) in solution. TheExpand
  • 109
  • 11
Trace metal phytotoxicity in solution culture: a review.
Solution culture has been used extensively to determine the phytotoxic effects of trace metals. A review of the literature from 1975 to 2009 was carried out to evaluate the effects of As(V), Cd(II),Expand
  • 132
  • 10
Toxic effects of Pb2+ on growth of cowpea (Vigna unguiculata).
A concentration as low as 1 μM lead (Pb) is highly toxic to plants, but previous studies have typically related plant growth to the total amount of Pb added to a solution. In the present experiment,Expand
  • 125
  • 10
Nanotechnology: A New Opportunity in Plant Sciences.
The agronomic application of nanotechnology in plants (phytonanotechnology) has the potential to alter conventional plant production systems, allowing for the controlled release of agrochemicalsExpand
  • 295
  • 9
  • PDF
Toxicities of soluble Al, Cu, and La include ruptures to rhizodermal and root cortical cells of cowpea
Elevated levels of many metals are toxic to plant roots, but their modes of action are not well understood. We investigated the toxicities of aluminium (Al), copper (Cu), and lanthanum (La) inExpand
  • 95
  • 9
Fate of ZnO nanoparticles in soils and cowpea (Vigna unguiculata).
The increasing use of zinc oxide nanoparticles (ZnO-NPs) in various commercial products is prompting detailed investigation regarding the fate of these materials in the environment. There is,Expand
  • 155
  • 8
Prediction of Pb speciation in concentrated and dilute nutrient solutions.
Despite the presence of numerous studies in the literature examining the phytotoxicity of Pb, there is a lack of precise quantitative data on limiting concentrations of Pb for plant growth. Using theExpand
  • 54
  • 8
A Review of the Use of the Basic Cation Saturation Ratio and the "Ideal" Soil
they have been reported to be in the range of 0.5 to 1.5 cmol c kg −1 for Ca, 0.2 to 0.3 cmol c kg −1 for Mg, and 0.2 to 0.5 cmol c kg −1
  • 89
  • 7
  • PDF
In Situ Distribution and Speciation of Toxic Copper, Nickel, and Zinc in Hydrated Roots of Cowpea1[W][OA]
The phytotoxicity of trace metals is of global concern due to contamination of the landscape by human activities. Using synchrotron-based x-ray fluorescence microscopy and x-ray absorptionExpand
  • 110
  • 6
  • PDF