Abstract
Abstract Linz‐Donawitz (LD) slag, containing 29% calcium (Ca), 21% iron (Fe), and 5% magnesium (Mg), is a by‐product of the iron and steel‐making industry. It is produced in large quantities in Europe and poses a substantial disposal problem. A field trial was conducted to study whether LD slag could be used as a dolomitic liming agent for pastures. The effects of six LD slag rates (0, 1000, 1500, 3000, 5000, and 7500 kg LD slag/ha), with or without NPK fertiliser, on soil properties, pasture yield, and botanical composition were investigated at two locations, Derio and Abadiano (Bizkaia, northern Spain). Soil at Derio was a fine silty, mixed (acid), mesic Typic Udorthent and at Abadiano a fine loamy, mixed (nonacid), mesic Aquic Udifluvent. At Derio, the 3‐year trial was laid out on a newly established pasture of perennial ryegrass (Lolium perenne L.), cocksfoot (Dactylis glomerata L.), and white clover (Trifolium repens L.), whereas at Abadiano the trial was on a resident pasture dominated by yorkshire ...
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