Practical guide to detection and identification of Phytophthora Leaf blight A number of Phytophthora species cause leaf blight. These include: P. infestans on potato and tomato; P. palmivora on a large number of tropical fruit species including rubber‚ durian and macadamia; and P. colocasiae on taro. These blights on leaves are first seen as small flecks but within 3-5 days they expand to produce large lesions. Initially‚ infected tissue is water soaked but becomes necrotic (brown or black) in
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Report: The effect of daily treatment with UV light of turf grass greens infected by Sclerotinioria homoeocarpa and Microdochium nivale. Introduction In the Netherlands‚ golf is increasing in popularity and the present golf courses are occupying 7300 hectares in total (Zibb: Portal voor ondernemers. Tips‚ tools en het laatste nieuws). Turf grasses are plants that are made very susceptible to infection by fungi because of their prerequisites. Especially the greens have high demands: The grass
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In 1839‚ Charles Darwin wrote “It is remarkable that the same plant should be found on the sterile mountains of Central Chile‚ where a drop of rain does not fall for more than six months‚ and within the damp forests of the southern islands” (Chapaman). He was speaking of the potato‚ and its ability to adapt to a variety of climates‚ from the semiarid to the tropical wet. Potatoes also have high nutritional value. They supply every vitamin and mineral that a body needs except for vitamin A‚ vitamin
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The Great Migration from Ireland to America 1800-1900 The Irish were among the many people who migrated to the United States of America. The wave of Irish migration happened in the mid – 18th century and started around the early 1840s. Many of the Irish moved to the United States of America and Canada because they wanted to be able to live freely. The majority of Irish people post 1000 A.D were Catholic. In Ireland‚ there were laws enforced by the British government that removed power form the
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Review all chapters in your exercise manual beginning with the introduction INTRODUCTION: (Covered 9.4.14 II Week 1) Biosafety levels1: basic level of containment. Hand washing or wearing gloves 2: Appropriate for working with human body fluids. Autoclave‚ sharps containers‚ lab coats 3: appropriate for working with pathogens that can be transmitted via respiratory route. Self-closing‚ double doors and sealed windows 4: Highest level. Aerosol pathogens; pathogens with no vaccine/treatment. Separate
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Protist Protist Temporal range: Neoproterozoic – Recent | | Scientific classification | Domain: | Eukarya | Excluded groups * Fungi * Plantae * Animalia Many others; classification varies | * Chromalveolata * Heterokontophyta * Haptophyta * Cryptophyta (cryptomonads) * Alveolata * Dinoflagellata * Apicomplexa * Ciliophora (ciliates) * Excavata * Euglenozoa * Percolozoa * Metamonada * Rhizaria * Radiolaria
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In Ireland in the 1800’s huge events that would affect the history of Ireland took place. In 1801 the “Act of Union” was formed‚ which lead to the Young Ireland Movement. Near the end of the Young Ireland Movement the Great Potato Famine took place. This lead to the formation of the Gaelic League‚ which protected the culture of Ireland‚ and the most popular part of the culture today is Irish Dancing. The “Act of Union” was an act formed in 1801 between the two countries of Ireland and
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the land. Consequently‚ just one poor harvest could lead to arrears of rent‚ the threat of the bailiff and even eviction. This already difficult situation was to get much worse when in October 1845 the first signs of the potato blight or ‘phytophthora infestans’ was detected in Athlone. The purpose of this essay is to discuss the role of the Athlone workhouse in dealing with distress during the great famine. The objective is to demonstrate how hard and difficult life could be in the workhouse‚
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The Irish Impact on the American Economy The Great Famine of the mid 19th century caused a mass exodus of Irish immigrants to the United States. According to Kevin Kenny‚ roughly 2 million immigrants traveled to the Americas within 10 years. This massive influx of immigrants had various sociopolitical effects‚ but arguably the largest impact was on the American economy‚ which was prime for the industrial revolution. Manifest Destiny was a major domestic policy at the time‚ where the United States
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A.) The two most significant environmental or physical geographic factors that contributed to the development and expansion of the United states had to be the Gold Rush‚ and the Irish Potato Famine. The Irish potato famine was devistating to Ireland and laid waste to it’s population‚ but ended up spurring Irish immigration to the United States‚ leading to both growth and expansion. The gold rush that took hold in the United States was one of the biggest factors that pushed people west and lead to
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