Can Application of Dairy Liquid Manure over 10 Years into No-Tillage Affect Soil Phosphorus Lability?

IF 3.8 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Water, Air, & Soil Pollution Pub Date : 2023-07-04 DOI:10.1007/s11270-023-06485-4

Luana Salete Celante, Nerilde Favaretto, Vander Freitas Melo, Gabriel Barth, Verediana Fernanda Cherobim

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Abstract

Long-term application of dairy liquid manure (DLM) can modify soil phosphorus (P) dynamics. P fractionation allows the identification of organic and inorganic P and its lability via procedures of lesser and greater power extraction. The aim was to evaluate the effect of successive DLM applications (10 years) in no-tillage on soil P fractions. The experiment was carried out in an Oxisol with a sandy clay loam texture. Treatments consisted of three DLM doses (60, 120, and 180 m³ ha⁻¹ year⁻¹) and the control (unmanured) (0 m³ ha⁻¹ year⁻¹) randomized in a complete block design with four replicates. The soil was sampled at three depths (0–0.05; 0.05–0.10, and 0.10–0.15 m), and sequential extractions were performed for each depth. DLM increased soil P concentrations in all fractions, mainly in the 0–0.05 m depth resulting in the following proportions of P (average of all DLM doses in 0–0.05 m depth): labile (29%), moderately labile (38%), low lability (17%), and residual (16%). In the unmanured treatment, the proportion was labile (18%), moderately labile (39%), low lability (22%), and residual (21%). DLM application resulted in a higher proportion of organic and inorganic labile P (water, resin, and NaHCO₃) indicating a greater plant availability but also a P water pollution risk by surface runoff.

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免耕10年以上施用乳化液对土壤磷不稳定性有影响吗?

摘要长期施用乳化液粪可改变土壤磷素动态。磷分选可以通过更小和更大的功率提取程序来识别有机和无机磷及其稳定性。目的是评价免耕连续施用DLM(10年)对土壤磷组分的影响。试验在砂质粘土壤土的土壤中进行。处理包括三个DLM剂量(60、120和180 m3 ha−1年−1)和对照(未施肥)(0 m3 ha−1年−1年−1)，随机分为4个完全区组设计。土壤在3个深度(0-0.05;0.05-0.10和0.10-0.15 m)，并对每个深度进行顺序提取。DLM增加了各组分土壤P浓度，主要在0-0.05 m深度，导致P的比例(所有DLM剂量在0-0.05 m深度的平均值)为:不稳定(29%)，中等不稳定(38%)，低不稳定(17%)和残留(16%)。在未施肥处理中，比例为不稳定(18%)、中度不稳定(39%)、低不稳定(22%)和残留(21%)。DLM的施用导致有机和无机活性磷(水、树脂和NaHCO3)的比例更高，这表明植物的可利用性更高，但也有地表径流对P水污染的风险。

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来源期刊

Water, Air, & Soil Pollution 环境科学-环境科学

CiteScore

4.50

自引率

6.90%

发文量

448

审稿时长

2.6 months

期刊介绍： Water, Air, & Soil Pollution is an international, interdisciplinary journal on all aspects of pollution and solutions to pollution in the biosphere. This includes chemical, physical and biological processes affecting flora, fauna, water, air and soil in relation to environmental pollution. Because of its scope, the subject areas are diverse and include all aspects of pollution sources, transport, deposition, accumulation, acid precipitation, atmospheric pollution, metals, aquatic pollution including marine pollution and ground water, waste water, pesticides, soil pollution, sewage, sediment pollution, forestry pollution, effects of pollutants on humans, vegetation, fish, aquatic species, micro-organisms, and animals, environmental and molecular toxicology applied to pollution research, biosensors, global and climate change, ecological implications of pollution and pollution models. Water, Air, & Soil Pollution also publishes manuscripts on novel methods used in the study of environmental pollutants, environmental toxicology, environmental biology, novel environmental engineering related to pollution, biodiversity as influenced by pollution, novel environmental biotechnology as applied to pollution (e.g. bioremediation), environmental modelling and biorestoration of polluted environments. Articles should not be submitted that are of local interest only and do not advance international knowledge in environmental pollution and solutions to pollution. Articles that simply replicate known knowledge or techniques while researching a local pollution problem will normally be rejected without review. Submitted articles must have up-to-date references, employ the correct experimental replication and statistical analysis, where needed and contain a significant contribution to new knowledge. The publishing and editorial team sincerely appreciate your cooperation. Water, Air, & Soil Pollution publishes research papers; review articles; mini-reviews; and book reviews.