by Stu Campbell. "The key to understanding your garden soil is to understand where it came from, what it is and what it is becoming." Campbell's handy guide starts with explaining the components and life cycle of soil and moves onto how to improve it ... soil testing, balancing acidity and alkalinity, nutrients, amendments and difficult soils. Black and white illustrations. 32 pages. 5.5 X8.5 inches. Contents: Where Soil comes from What's in Soil Loam, Sand Silt, or Clay? Soil Life Earthworms Drainage: Manage Air and Water in the Soil Cultivation Soil Testing Balancing Acidity and Alkalinity (pH) Nutrient Balance When to Improve Your Soil Soil Amendments Improving Difficult Soils.
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