Lecture 8 - 03:27 NOT ON EXAM Exam: 50 minutes exactly...

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Unformatted text preview: 03:27 NOT ON EXAM Exam: 50 minutes exactly Plant growth and development environmental conditions and responses Abiotic factors below ground Air Nitrogen, carbon dioxide, hydrogen, oxygen Relative humidity Quality - factors that affect quality of air: Ozone Pollutants Sulfur oxide and nitric oxide (acid rain( pH in acid rain air currents amount of movement in the air Relative Humidity Dependent on the amount of water vapor and temperature of the air Measured in psychrometer Plants water needs are directed proportional to relative humidity What process is influenced by humidity? Cooling transpiration Air Pollutants Pollutants Ozone Green beans sensitive Green house gases (GHG) Particulate matter Peroxyacetyl nitrate Sources Auto exhaust CFC (aerosol propellants) Fluorides Insecticides Pesticides Things we put on our land Damage to plants Bleaching of foliage Reduction in yield Because of poor photosynthesis Acid Rain Combination of water with nitric oxide, sulfur dioxides or hydrogen chloride Low pH (<5.6) Areas affected Eastern US Lakes, forests Air Currents Wind Relation to mountains Warm thermal belts Inversions Relation to large body of water Windward side (dry) Leeward side (moist) When winds cross body of water Cold air sinks Warm air rises Plant plants on slope of hill more susceptible to frost Air Currents Relation to Land Windward Less stable climate Drier Grain crops might be grown Leeward More stable climate Moist Fruits and vegetables might be grown Windward leeward over water adding wind...
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Lecture 8 - 03:27 NOT ON EXAM Exam: 50 minutes exactly...

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