Residual Effects of Novel versus Traditional Organic Amendments for Rain-fed Notill Barley: Yield, Nutrient Uptake, and N2O Emissions

文献类型： 外文期刊

第一作者： Tang, Xu

作者： Tang, Xu;Hao, Xiying;Xu, Shanwei;Larney, Francis J.;Tang, Xu

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期刊名称：COMPOST SCIENCE & UTILIZATION （ 影响因子：1.149； 五年影响因子：1.409 ）

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收录情况： SCI

摘要： Organic amendments recycle nutrients, but N2O emissions are both environmental and agronomic concerns. We conducted a 4-year field experiment to determine no-till barley (Hordeurn vulgare L.) yield and nutrient uptake and soil N2O emissions following a single application of six amendment treatments: (1) no amendment (Check); (2) synthetic N fertilizer (Fert); (3) fresh beef cattle feedlot manure (ManureF); (4) beef cattle feedlot manure compost (CompostR); (5) beef cattle feedlot manure composted with cattle mortalities (CompostiVI); and (6) separated solids from anaerobically digested cattle feedlot manure (ADM). Barley grown in Year 1 (2006), Year 2 (2007), and Year 4 (2009) (with Year 3 (2008) under fallow) had higher grain yields from ManureF (4.73 Mg ha(-1)) in Year 2 and ADM (6.30 Mg ha(-1)) in Year 4 (p < 0.05) than other treatments. The grain N and contents were not affected (p > 0.05), but N uptake over 3 years (112.8 kg N ha(-1) yr(-1)), and P uptake in Year 1 (19.1 kg ha(-1) yr(-1)) and Year 2 (14.3 kg ha(-1) yr(-1)) from ManureF, were higher (p < 0.05x) than other treatments. The cumulative N2O emissionsI from ManureF in Year 1 (1.488 kg N ha(-1)) and from ADM in Year 2 (1.072 kg N ha(-1)) were higher (p < 0.05) than other treatments while thefraction of applied N emitted as N2O was small (0.00 to 0.79%) and not affected by treatment. However, the percentages of applied N emitted as N2O from compost and ADM were similar to synthetic fertilizer and livestock manure.

分类号： S14

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