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41:54 Fundamentals Nutrient Management Ch 10 Part 1 May… Fundamentals Nutrient Management Ch 10 Part 1 May 17 Lecture	Fundamentals Nutrient Management Ch 10 Part 1 May 17 Lecture ssc109 nutrients root soil surface roots things fertilizers systems plant crop irrigation soils potassium seed band plow uptake salts water plants phosphorus crops From William Horwath 0 likes 47 plays 0