%0 Journal Article
%T Effect of phosphorus on the concentrations of arsenic, iron and some other elements in barley grown hydroponically
%A M. R Shaibur
%A T. A Adjadeh
%A S Kawai
%J Journal of Soil Science and Plant Nutrition
%D 2013
%I Chilean Society of Soil Science
%X Hydroponic barley (Hordeum vulgare L. cv. minorimugi) was treated with 10 ¦ÌM arsenic (As) together with 500, 250, 50 and 0 ¦ÌM phosphorus (P) for 14 days to observe the response of the seedlings. The plants were also treated with 0 ¦ÌM As + 0 ¦ÌM P. Iron (Fe)-plaque was visible in the roots under As-treated and P-depleted conditions. The intensity of reddish coloration in the roots decreased with increasing P in the media. However, reddish coloration was not found in the absence of both As and P. The results show that both As and P played a vital role in the formation of Fe-plaque. Additionally, Fe-plaque formation was dependent on the concentration of P in the media. Iron concentration in the roots of the As treated plants without P was higher than that observed in the roots treated with 0 ¦ÌM As + 0 ¦ÌM P which suggests that As may have been adsorbed with Fe on the surface of roots, forming Fe-plaque. Arsenic concentration in the shoots and the roots was low under 500 and 250 ¦ÌM P conditions while high under 50 and 0 ¦Ì M P conditions. It was found that a higher concentration of P (50 ¦ÌM; 5 times of As level) was required in the medium to reduce As concentration in the plant tissues.
%K As-Fe complex
%K barley roots
%K phosphate
%K reddish color Fe-plaque
%K translocation
%U http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162013005000009