Know your soils

What is the N-supplying Power of Your Soil?

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Q: Why are some soils more fertile than others?

Dr. Khan:

Most soils of the Midwestern USA are very fertile because they are moderate to high in organic matter, developed on deep loess deposits and have good nutrient and water supplying potential. These soils need less nutrient inputs from fertilizers, as opposed to those soils that are lower in organic matter with a limited rooting depth, and thus lower in overall nutrient supplying capacity.

Q: How much nitrogen is required by a crop over the growing season?

Q&A on Soils, Fertility and Sustainability

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Dr. Saeed Khan is the Lead Soil Scientist at Soil Diagnostics, Inc. He brings over 30 years of experience and insight into soil chemistry, soil biology and agricultural management practices. 

This series of articles is an attempt to capture Dr. Khan's extensive experience in understanding soil fertility and their relation to agronomic practices, soil testing and environmental sustainability.