Post on 13-Dec-2015
Principles of Agricultural Science – Plant
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Plants in Our World
Unit 1 – Worlds of OpportunityLesson 1.1 A World without Enough Plants
Principles of Agricultural Science – Plant
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Crop Regions
Frost free periods (growing season)Mean average temperature (growing
degree days)Rainfall
Certain crops grow in specific regions of the United States.
Influencing environmental factors include:
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The Relationship between Plants and Animals
• Animals (including humans) eat plant material
• Plants restore oxygen to the air animals breathe
• Decaying animal products support plant life in the form of nutrients
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Harvesting the Sun
• Carbohydrates
• Fats
• Oils
Plants use the energy from sunlight to convert raw materials from the Earth into:
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Gas Exchange
Plants use carbon dioxide from the air and convert it into oxygen
The process of food production and gas conversion is called photosynthesis
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Human Value
• Food
• Feed for livestock
• Fiber
• Fuel
• Medicine
• Aesthetic value
What are some ways humans use plant material?
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Stresses on Plant Production
• Global human population• Demand for biofuels• Urban growth• Water resources
Future increase in demands for plant production will need to be met.
Current issues facing the supply of plant products:
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Outcomes?
What if the supply of plants cannot keep up with human demands?
What are some solutions?
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References
Parker, R. (2010). Plant and soil science: Fundamentals and applications. Clifton Park, NY: Delmar.