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Influence of genotype and water stress on the uptake of potassium and nitrogen in maize
Comparison between landraces and high yielding cultivars of winter wheat in extensive, integrated and intensive farming over several years
Uptake and partitioning of nitrogen in nitrogen-limited barley : dependence of age and genotype
Variability of molecular nitrogen fixation and its dependence on plant genotype and diazotroph strains
Accumulation and translocation of nitrogen in cultivars of winter wheat with different demands for nutrition
Social contact requirements of domestic pigs assessed by behavioral demand functions
Social recognition, social dominance and the motivation of fighting by pigs
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