Heavy Metals in Agricultural Soils of Central Ethiopia ...
2016-6-16u2002·u2002In the present study, about 94% of the arable land had a phosphorus deficiency (available P ·kgǃ). To compensate for this deficiency, high amounts of phosphorous fertilization were applied to soils to get better crop yield. In the past two decades, soil organic matter has sharply declined from 34.8 g/kg in late 1980s' to 12.0 g/kg in 2010.
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