Search for dissertations about: "fertilization rate"
Showing result 21 - 25 of 39 swedish dissertations containing the words fertilization rate.
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21. Micronutrients in cereal crops : impact of nutrient management and soil properties
Abstract : Seven elements essential for plants are defined as micronutrients: boron (B), copper (Cu), iron (Fe), manganese (Mn), molybdenum (Mo), nickel (Ni) and zinc (Zn). Deficiency of these nutrients can cause yield losses in crops and impaired crop quality. READ MORE
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22. Endophytic fungi in meadow fescue and other forage grasses
Abstract : Many cool-season forage grasses associate with an endophytic fungus of the genus Epichloë. In Sweden one of the most important forage grasses is meadow fescue (Festuca pratensis Huds.), which is known to associate with Epichloë uncinata, previously named Neotyphodium uncinatum. READ MORE
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23. Mitochondrial differentiation during the early development of the amphibian embryo
Abstract : Mitochondria from Xenopus laevis and Ambystoma mexica- num embryos between fertilization and the beginning of feeding were studied: the former with respect to metabolic behaviour, enzyme pattern and carrier activity, and the latter with respect to morphological parameters.The metabolic behaviour of mitochondria was studied by assessing the rates of oxygen uptake in presence of various substrates. READ MORE
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24. Food Quality Effects on Zooplankton Growth and Energy Transfer in Pelagic Freshwater Food Webs
Abstract : Poor food quality can have large negative effects on zooplankton growth and this can also affect food web interactions. The main aims of this thesis were to study the importance of different food quality aspects in Daphnia, to identify potentially important differences among zooplankton taxa, and to put food quality research into a natural context by identifying the importance of food quality and quantity in lakes of different nutrient content. READ MORE
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25. What do snails do in ecosystems? it is a matter of traits
Abstract : Current environmental changes demand the ability to predict possible consequences for ecosystems performing important functions regulating the Earth system, and providing essential services for human well-being. Indirect impacts can occur through changes in biotic communities. READ MORE