In a mixed-stand, species with contrasting nutrient use patterns interact and may use their resources to increase productivity in different ways. These two mechanisms are often complementary, as there are inherent trade-offs between them. more Individual plant species or genotypes often differ in their demand for nutrients to compete in a community they must be able to acquire more nutrients (i.e., uptake efficiency) and/or use them more efficiently for biomass production than their competitors. Individual plant species or genotypes often differ in their demand for nutrients to compete in a. We assessed the abundance of mycorrhizal colonization, fungal diversity. 'Tora') compared to plots with pure genotypes in a randomized block design in a field experiment in Northern Germany. To test this hypothesis, we have studied the mixture of two fundamentally eco-physiologically different genotypes ( cv. It can be hypothesized that mixing of genotypes with strong eco-physiological differences changes the diversity and abundance of root-associated fungi and P-mobilization in the mycorrhizosphere based on different root characteristics. However, the impact of host diversity accomplished by mixing different genotypes within the site on root-associated fungi and P-mobilization in the field is not known. The fungal root colonization is affected by the plant genotype, soil properties and their interactions. can be colonized by two types of mycorrhizal fungi (ectomycorrhizal and arbuscular) and furthermore by dark-septate endophytes. can be colonized by two types of mycorrhizal fungi (ectomycorrhizal and arbuscu. A higher ratio of total fungal to bacterial (f/b) PLFAs, a lower ratio of Gram-positive to Gram. Higher proportions of carbohydrates, long-chained fatty acids, sterols and suberins at the expense of N-containing compounds under poplar than under wheat were associated with lower concentrations of microbial PLFAs in the organic matter. Py-FIMS and the PLFAs agreed in showing crop-specific differences in the SOM quality and in the associated microbial communities. The microbial consortium was assessed in terms of microbial phospholipid fatty acid (PLFA) profiles. The SOM molecular composition and stability was determined by pyrolysis-field ionization mass spectrometry (Py-FIMS). ![]() This study aimed to evaluate the soil organic matter (SOM) quality and viable microbial consortium under six-years-old poplar (Populus maximowiczii) and under wheat (Triticum aestivum) at a test site in central Germany. more Poplars grown in short rotation coppice on agricultural land are a promising bioenergy crop. Poplars grown in short rotation coppice on agricultural land are a promising bioenergy crop. The initial plant availability of the nutrients significantly differed between the sites and the two sampling dates at both sites. The plant availability of potassium (K), magnesium (Mg) and phosphorus (P) and soil phosphatase activities in the topsoil were measured in spring of the year of planting (initial) and under 4 years-old stocks (one year after the first 3-year cutting cycle). ‘Tora’, grown as pure and mixed cultures at non-fertilized former arable sites in Germany (Stagnic Cambisol) and Sweden (Vertic Cambisol). Therefore, this study evaluates the nutrient availability and P mobilization under two willow species, Salixdasyclados var. In general, species mixtures can be more nutrient-efficient than pure cultures, but this is scarcely known for Salix spp. more Fast-growing willows (Salix spp.) provide alternative sources of renewable energy generation, but need an adequate nutrient availability in the soil for high biomass production. The Salix systems were compared with a reference case where heat is produced from natural gas and green fallow was the land use al.įast-growing willows (Salix spp.) provide alternative sources of renewable energy generation, but. ![]() The analysis used data from a Swedish field trial of six Salix varieties grown under fertilized and unfertilized treatments on Vertic Cambisols during 2001–2018. Soil carbon modelling was combined with a life cycle assessment (LCA) approach to quantify SOC sequestration and climate impacts over a 50-year period. This study analyses the influence of variety on soil organic carbon (SOC) dynamics and climate impacts from Salix cultivation for heat production for a Swedish site with specific conditions. Salix varieties exhibit significant variation in their physiological traits, growth patterns and soil ecology-but the effects of these variations have rarely been studied from a systems perspective. more Short-rotation coppice (SRC) Salix plantations have the potential to provide fast-growing biomass feedstock with significant soil and climate mitigation benefits. Short-rotation coppice (SRC) Salix plantations have the potential to provide fast-growing biomass.
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