Effect of farmyard manure and sodium humate on the content of mercury in spring wheat
1998
Shalabey, O. | Bizik, J. (National Research Centre, Dokki (Egypt))
The influence of mercury, farmyard manure and sodium humate added to soil on the yield of spring wheat and its content in plants grown in loamy soil and sandy soil was studied in pot experiments. The results obtained can be summarized as follows: The addition of mercury at a rate of 50 mg per pot (4.91 kg Hg/ ha) to soil did not change significantly the yield of grain and straw but increased the concentration of mercury in dry matter of wheat, as compared to control treatment. The addition of farmyard manure at rate of 200 g per pot (20 t/ha) and sodium humate at a rate of 0.05 g per pot (5 kg/ha) to soil significantly increased the yield of grain and straw and decreased the mercury concentration in grain and straw. Also, the Hg accumulation in straw was higher than in grain. By using the above-mentioned rates of organic materials the more positive effect on blocking of the Hg mobility was observed after the addition of FZM. In sandy soil, lower yields of grain and lower concentration of Hg in grain and straw were achieved than in loamy soil
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