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Plant and soil responses to field-applied flue gas desulfurization residue

机译:植物和土壤对田间施用烟气脱硫残留物的反应

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The objective of this study was to document the availability of flue gas desulfurization (FGD) residue-borne boron (B), sulfur (S), and molybdenum (Mo) for alfalfa (Medicago sativa L.) uptake when applied at agronomic rates to marginally B deficient soils. The FGD residue was applied at rates of 0, 0.46 and 3.75 Mg ha~(-1) on a silt loam soil immediately prior to alfalfa seeding. Alfalfa yields were unaffected by these rates of residue applications, but shoot concentrations of B and S in the second cutting, and B, S, and Mo in the third cutting were increased by residue applications. Hence, FGD residue is a readily available B source, particularly later in the growing season when native soil B availability decreased.
机译:这项研究的目的是证明苜蓿(Medicago sativa L.)吸收的烟道气脱硫(FGD)残余物携带的硼(B),硫(S)和钼(Mo)的有效性少量缺硼的土壤。在苜蓿播种前,将FGD残留物分别以0、0.46和3.75 Mg ha〜(-1)的速率施用在粉壤土上。紫花苜蓿的产量不受这些残留物施用率的影响,但第二次切割中B和S的芽浓度以及第三次切割中B,S和Mo的芽浓度由于施用残留物而增加。因此,FGD残留物是易于获得的B来源,尤其是在生长季节后期,当天然土壤B的可用性降低时。

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