caa a22 4500 606220259 CHVBK 20210128101122.0 cr unu---uuuuu 210128e20150801xx s 000 0 eng 10.1007/s11104-015-2496-3 doi (NATIONALLICENCE)springer-10.1007/s11104-015-2496-3 Effect of continuous application of inorganic nitrogen fertilizer on selenium concentration in vegetables grown in the Taihu Lake region of China [Elektronische Daten] [Sumei Li, Gary Bañuelos, Ju Min, Weiming Shi] Background and aims: Vegetables provide an important source of selenium (Se) for many regions of China. Excess nitrogen (N) fertilizers are commonly used for vegetable production. In this regard, the effect of inorganic N-fertilizer application on the Se content in soils and plants was evaluated in vegetables produced in a polytunnel greenhouse vegetable system. Methods: Vegetables were continuously cultivated for 6years in a microplot field experiment and treated annually with conventional N fertilizer (870kgha−1 inorganic fertilizer) and 0kgNha−1 as control treatment in polytunnel greenhouse vegetable system in the Taihu Lake region of China. Both treatments included 234kgha−1N provided by manure. After each harvest, soil and vegetable samples were collected, and analyzed for soil NO3-N, Olsen-P, Se, phosphate extractable S and Se and vegetable Se. Results: Six years of continuous application of inorganic N-fertilizer resulted in a significant accumulation of NO3-N, Olsen-P and extractable S in the soil over the course of the experiment. Soil NO3-N concentration accumulated up to 600mgkg−1 with application of inorganic N-fertilizer, while soil phosphate extractable Se and vegetables Se concentration were significantly lower than that those grown in control treatments. The negative effect of continuous application of inorganic N-fertilizer on vegetable Se concentration may be a consequent of excessive accumulated soil NO3-N. When NO3-N concentration was greater than 300mgkg−1, vegetable Se concentration was negatively correlated with soil NO3-N. Conclusions: The negative effect of continuous application of inorganic N-fertilizer on vegetable Se concentrations was likely the result of soil nitrate's competitive or antagonistic effect on Se uptake by vegetables grown in an intensive polytunnel vegetable cultivation system. Springer International Publishing Switzerland, 2015 Field experiment nationallicence Inorganic N-fertilizer nationallicence Nitrate accumulation nationallicence Se availability nationallicence Vegetable Se concentration nationallicence Li Sumei State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 210008, Nanjing, People's Republic of China aut Bañuelos Gary Agricultural Research Service, San Joaquin Valley Agricultural Sciences Center, USDA, 9611 South Riverbend Avenue, 93648-9757, Parlier, CA, USA aut Min Ju State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 210008, Nanjing, People's Republic of China aut Shi Weiming State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 210008, Nanjing, People's Republic of China aut Plant and Soil Springer International Publishing 393/1-2(2015-08-01), 351-360 0032-079X 393:1-2<351 2015 393 11104 https://doi.org/10.1007/s11104-015-2496-3 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11104-015-2496-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Li Sumei State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 210008, Nanjing, People's Republic of China aut NATIONALLICENCE 700 1- Bañuelos Gary Agricultural Research Service, San Joaquin Valley Agricultural Sciences Center, USDA, 9611 South Riverbend Avenue, 93648-9757, Parlier, CA, USA aut NATIONALLICENCE 700 1- Min Ju State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 210008, Nanjing, People's Republic of China aut NATIONALLICENCE 700 1- Shi Weiming State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 210008, Nanjing, People's Republic of China aut NATIONALLICENCE 773 0- Plant and Soil Springer International Publishing 393/1-2(2015-08-01), 351-360 0032-079X 393:1-2<351 2015 393 11104