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Subdirectories of Soil and Additives:
Categories related to Soil and Additives : Gardening : Home:
Science: Agriculture: Soils (328)
Shopping: Home and Garden: Fertilizers and Soil Additives (87)
Websites on Soil and Additives:
* Improve Your Garden Soil
Covers a wide range of garden soil topics, including soil types, pH, nutrients, testing, composting and fertilizers.
Do It Yourself.com: Fertilizer, Compost, and Soil
Series of projects, articles, and tips on fertilizing, composting, and nutrient management.
Gardening Information: Soil
Collection of articles from Oregon State University on various aspects of soil: use of amendments and cover crops, temperature, acidity, moisture, and testing.
Improving Soil
Oregon horticulturalist offers information on soil components, pH, testing methods, and nutrients, and means of improving it by using amendments and improving drainage and aeration.
The Schundler Company
Collection of articles and resources about the horticultural uses of perlite and vermiculite.
Soil Testing is an Excellent Investment for Garden Plants and Commercial Crops, HYG-1132-99
Ohio State University fact sheet covers the benefits of testing garden soil and provides recommendations for testing frequency, collecting a sample, and submitting to a testing lab.
Vermiculite.com
One-page site giving suggestions on where to purchase vermiculite in the United States, along with some uses and properties of vermiculite.
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