title: Effect of long-term phosphorus fertilization on soil Se and transfer of soil Se to crops in northern Japan.
abstract: Phosphorus (P) fertilizer can potentially serve as a source for Se accumulation in croplands. Furthermore, it has been reported that the addition of P fertilizer to soil may enhance Se availability. Japanese agricultural soils are typically enriched in P as a result of long-term, excessive P fertilization. Therefore, we conducted a three-year field experiment in order to evaluate the effect of P fertilization on the Se content of soils and crops. Potato, wheat and barley were cultivated with and without P fertilization at two field sites in Hokkaido (northern Japan) with different levels of historical P accumulation. The first field site consisted of an Andosol soil with low available P and the second site, a Cambisol soil with high available P. The three years of continuous P fertilization over the course of the experiment did not result in a significant increase in the Se content of soils or plants. The Se content of soils and plants, however, was higher in soil samples from the Cambisol field site than from the Andosol field site, and total soil Se was significantly correlated with available soil P. Soluble soil Se and the soil-plant transfer factor for Se were not affected by P fertilization. Thus, we concluded that the higher plant Se content at the Cambisol field site was primarily due to the higher levels of accumulated Se in the soil at the site and that historical excess P fertilization typical of agricultural soils in Japan contributes to increased Se uptake by crops.
authors.affiliation: Tokyo University of Agriculture, Faculty of Bioindustry, Laboratory of Integrated Crop Management Science, 196 Yasaka, Abashiri, Hokkaido 099-2493, Japan.
authors.forename: Javkhlantuya
authors.initials: J
authors.lastname: Altansuvd
authors.affiliation: Tokyo University of Agriculture, Faculty of Bioindustry, Laboratory of Integrated Crop Management Science, 196 Yasaka, Abashiri, Hokkaido 099-2493, Japan. Electronic address: y3nakama@bioindustry.nodai.ac.jp.
authors.forename: Yasuo M
authors.initials: YM
authors.lastname: Nakamaru
authors.affiliation: Tokyo University of Agriculture, Faculty of Bioindustry, Laboratory of Integrated Crop Management Science, 196 Yasaka, Abashiri, Hokkaido 099-2493, Japan.
authors.forename: Shinya
authors.initials: S
authors.lastname: Kasajima
authors.affiliation: Tokyo University of Agriculture, Faculty of Bioindustry, Laboratory of Integrated Crop Management Science, 196 Yasaka, Abashiri, Hokkaido 099-2493, Japan.
authors.forename: Hirotake
authors.initials: H
authors.lastname: Ito
authors.affiliation: Tokyo University of Agriculture, Faculty of Bioindustry, Laboratory of Integrated Crop Management Science, 196 Yasaka, Abashiri, Hokkaido 099-2493, Japan.
authors.forename: Hozumi
authors.initials: H
authors.lastname: Yoshida
mesh_terms: D001692:Biological Transport / Q000187:drug effects; D018556:Crops, Agricultural / Q000187:drug effects* / Q000378:metabolism*; D005308:Fertilizers; D007564:Japan; D010758:Phosphorus / Q000494:pharmacology*; D018520:Plant Shoots / Q000187:drug effects / Q000378:metabolism; D012643:Selenium / Q000032:analysis* / Q000378:metabolism*; D012987:Soil / Q000737:chemistry*; D013997:Time Factors
chemical_list: D005308:Fertilizers; D012987:Soil; D010758:Phosphorus; D012643:Selenium
keywords: Agricultural soil; Excess P-fertilization; Field experiment; Se accumulation; Se bioavailability; Soil-plant transfer