PLANTS AS A BIORESOURCE

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Presentation transcript:

PLANTS AS A BIORESOURCE

USES FOR PLANTS IN OUR SOCIETY Fuel (ethanol from corn) Medicine (aloe vera, med. marijuana) Tools (wood, toxins in wood to kill fish, weapons) Food Construction Alcohol (potato  vodka; grapes  wine) To breathe! Shade Fragrances Composting Narcotics Clothing (ex. Hemp, cotton) Dyes, tattoos, henna Paper Soaps Flour, mint, herbs, tea, spices Make-up, cosmetics, beauty and skin care, jewellery

Important Crops in Canada (thousands of tonnes) Wheat 28, 611 Canola 12, 642 Barley 11, 781 Grain corn 10, 592

Monoculture One type of plant is grown in place of the natural ecosystem What are some pros and cons of this approach?

Medicinal Uses 25% of prescription medicines contain plant extracts Rosy periwinkle (vincristine andvinblastine) – childhood leukemia and Hodgkin’s. Survival rates have gone from 20% to 90% with these 2 compounds Goldenseal – colds and sore gums Ginseng – immune system function

Biofuels Most biofuels come from corn (ethanol). What are some pros and cons of this method? Research is being done to get fuel from cellulose and oil from algae

Erosion Control The paradox of farming: farmers need good soil to farm, yet farming destroys good soil. 2.5 million acres each year are lost to urbanization and soil erosion. About 1/3 of the country's topsoil has been lost due to urbanization and soil erosion.