Husniye Aka Sagliker, N. Kızıldağ, Şahin Cenkseven, C. Darıcı, B. Koçak, N. Y. Bozdoğan, Nebile Dağlıoğlu
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引用次数: 7
摘要
Imazamox是一种除草剂,主要用于地中海气候条件下土耳其Osmaniye花生田土壤。本研究选择未接触Imazamox的土壤(NE)和处理过Imazamox的花生土壤(P)两种类型的土壤,分别在NE和P土壤中添加该除草剂的推荐田间剂量[RFD], 40 g L -1有效成分],2倍RFD和4倍RFD。采用碳氮矿化法测定了两种不同湿度条件下(60%和80%田间容量条件下)土壤微生物活性。碳矿化用co2呼吸法测定,温度为30℃,时间为45天。60%和80% FC加湿的磷在所有除草剂剂量下的碳矿化率(%)显著高于其他所有东北土壤剂量湿度组合(P<0.001)。除NH4-N外,两种土壤NO3-N含量差异显著(P≤0.05)。这些结果表明,产生硝酸盐的细菌对添加到土壤中的外来化合物仍然非常敏感。这些结果表明,土壤微生物在不受不同湿度条件影响的情况下,作为C和/或N源消耗了Imazamox。
Effects of Imazamox on Soil Carbon and Nitrogen Mineralization under Two Different Humidity Conditions
Imazamox, is a herbicide intensively used in the peanut field soils of Osmaniye, Turkey with Mediterranean climate conditions. In this study, two types of soils were selected, first not exposed (NE) to Imazamox previously and the second Imazamox treated peanut soil (P). The recommended field dose [(RFD), 40 g L -1 active ingredient], 2 × RFD, and 4 × RFD of this herbicide were added to the NE and P soil. The microbial activities of the soils were measured by carbon and nitrogen mineralization under two different humidity conditions [60% and 80% of field capacity (FC)]. Carbon mineralization was determined by the CO 2 respiration method at 30°C over 45 days. Mineralization ratios (%) of carbon in all herbicide doses of P humidified at 60% and 80% FC were significantly higher than all the other dose–humidity combinations of NE soils (P<0.001). Despite the NH4-N, there were significant differences between the NO3-N contents of these two soils (P≤0.05). These results showed that nitrate producing bacteria were still very sensitive to foreign compounds added to the soils. These results suggest that soil microorganisms consumed the Imazamox as C and/or N sources without being effected by different humidity conditions.
期刊介绍:
Cessation. Ekoloji is an international journal that focuses on papers that report results from original research on all disciplines engaged in the field of environmental research. We welcome articles that cover the entire spectrum of environmental problems and environmental pollutants, whether chemical, biological or physical. Its coverage extends to all environmentally related issues: air and water pollution, solid waste, noise, recycling, natural resources, ecology and environmental protection. It includes articles on basic and applied environmental pollution research, including environmental engineering and environmental health. All types of pollution are covered, including atmospheric pollutants, detergents, fertilizers, industrial effluents, metals, mining wastes, oil, pesticides, plastics, radioactive materials and sewage. It also includes research papers on ecological and environmental issues such as climate change, biodiversity. The primary criteria for publication are scientific quality and ecological/environmental significance.
The journal will be read and contributed to by biologists, applied ecologists, environmental scientists, natural resource specialists, environmental engineers, environmental health specialists, agro-ecologists, veterinaries, agricultural engineers, landscape planners and designers. The journal welcomes full "research papers" and short "research notes", only in the English language.