SYNERGISTIC EFFECTS OF COAL WASTE DERIVED HUMIC SUBSTANCES AND INORGANIC FERTILIZER AS SOIL AMENDMENTS FOR BARLEY IN SANDY SOIL

Synergistic effects of coal waste derived humic substances and inorganic fertilizer as soil amendments for barley in sandy soil

Increasing pressures on land resources requires increased land use efficiency.Over 900 million ha of sandy soils throughout the world are extensively used for agricultural crop production, most requiring nutrient inputs.Although use of humic substances together with inorganic fertilizer as soil amendments has been introduced, their synergistic effe

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