Minnesota Plant Diseases

Plant Macrofossils from Kirchner Marsh, Minnesota—A Paleoecological Study

Seeds and other plant macrofossils were extracted from cores used previously for pollen analysis, and the results are presented in the style of pollen diagrams. The Zone A macroflora is characterized by abundant Picea (spruce) and Larix (tamarack) needles. The remaining species are widely distributed on swampy lake shores, in silty lakes, or in forest-floor communities. The macroflora contains ...

Plant Disorders and Diseases

A plant disorder is defined as any abnormal plant growth or development. The affected plant does not live up to the normal expectations; it is incapable of carrying out its normal physiological functions to the best of its genetic potential. There are almost an unlimited number of factors that can have a negative affect plants. Disorders can be broken down into two main categories, abiotic diso...

Ammophila breviligulata: Implications of using non-local plant sources for native plant restorations in Minnesota

Ecological restoration projects often rely upon the introduction of nonlocal propagules, such as seed or clonal fragments, to replace or supplement threatened populations. In Minnesota, historical dune restoration projects introduced nonlocal propagules of Ammophila breviligulata from Michigan to augment the threatened native population. Despite the good intentions of such efforts, there is mou...

Biological control of plant diseases

Bacteriophages and Bacterial Plant Diseases

Losses in crop yields due to disease need to be reduced in order to meet increasing global food demands associated with growth in the human population. There is a well-recognized need to develop new environmentally friendly control strategies to combat bacterial crop disease. Current control measures involving the use of traditional chemicals or antibiotics are losing their efficacy due to the ...