| Soil Testing is an Excellent Investment for Garden Plants and Commercial Crops, HYG-1132-99
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Other links at Soil and Additives |
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Gardening Information: Soil
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Collection of articles from Oregon State University on various aspects of soil: use of amendments and cover crops, temperature, acidity, moisture, and testing.
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Building Fertile Soil
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Guide to creating and maintaining good quality soil, emphasizing organic materials and composting, from the Center for Agroecology and Sustainable Food Systems.
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The Schundler Company
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Collection of articles and resources about the horticultural uses of perlite and vermiculite.
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Lead Contamination In The Garden
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Covers causes and effects of elevated lead levels, recommends both health and soil screening procedures, and provides guidelines for gardening in areas with lead contamination.
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Iron Chlorosis
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Explains how iron deficiency affects trees and plants, and how to correct it. Ohio State University fact sheet.
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