Curated OER
Plant Nutrition
The first slide displays the human nutrition pyramid, unrelated to the rest of the collection. Plant nutrients and fertilizers are really the focus. Different nutrients required by plants are listed and the roles that they play in plant...
National Wildlife Federation
National Wildlife Federation: Organic Practices
How do you eliminate pesticides and fertilizers and still have a viable garden? This comprehensive resource discusses how you can be a successful organic gardener without the use of pesticides and fertilizers. Many helpful hints and tips...