Presence of Bradyrhizobium sp. under Continental Conditions in Central Europe

Anne Griebsch, Nicole Matschiavelli, Sylwia Lewandowska and Knut Schmidtke
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Anne Griebsch: Faculty of Agriculture/Environment/Chemistry, Dresden University of Applied Science, 01069 Dresden, Germany
Nicole Matschiavelli: Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
Sylwia Lewandowska: Department of Genetics, Plant Breeding and Seed Production, Wrocław University of Environmental and Life Sciences, Plac Grunwaldzki 24A, 50-375 Wrocław, Poland
Knut Schmidtke: Faculty of Agriculture/Environment/Chemistry, Dresden University of Applied Science, 01069 Dresden, Germany

Agriculture, 2020, vol. 10, issue 10, 1-17

Abstract: Soil samples from different locations with varied soybean cultivation histories were taken from arable fields in 2018 in East Germany and Poland (Lower Silesia) to evaluate the specific microsymbionts of the soybean, Bradyrhizobium japonicum , one to seven years after inoculation. Soybeans were grown in the selected farms between 2011 and 2017. The aim of the experiment was to investigate whether there is a difference in rhizobia contents in soils in which soybeans have been recultivated after one to seven years break, and whether this could lead to differences in soybean plant growth. The obtained soil samples were directly transferred into containers, then sterilized soybean seeds were sown into pots in the greenhouse. After 94 days of growth, the plants were harvested and various parameters such as the nodular mass, number of nodules, and dry matter in the individual plant parts were determined. In addition, the relative abundances of Bradyrhizobium sp. in soil samples were identified by sequencing. No major decline in Bradyrhizobium sp. concentration could be observed due to a longer interruption of soybean cultivation. Soil properties such as pH, P, and Mg contents did not show a significant influence on the nodule mass or number, but seem to have an influence on the relative abundance of Bradyrhizobium sp. The investigations have shown that Bradyrhizobium japonicum persists in arable soils even under Central European site conditions and enters into an effective symbiosis with soybeans for up to seven years.

Keywords: Bradyrhizobium sp.; Glycine max; Central Europe; soil properties; Nitrogen concentration nodules; Sulphur concentration nodules (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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