Part3PowerPoint - Root Zone Management for Greenhouse Crops...

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Root Zone Management for Greenhouse Crops Root Zone Management for Greenhouse Crops or Squirt, Dirt and Fert Presented by John Biernbaum, Ph.D.
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Root Zone Management for Greenhouse Crops _________________________________________________________ Plant Nutrition Historical Perspective ___________________________________________________
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Root Zone Management for Greenhouse Crops _________________________________________________________ Plant Nutrition Historical Perspective ___________________________________________________
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Root Zone Management for Greenhouse Crops _________________________________________________________ Plant Nutrition Historical Perspective CO 2 O 2 ___________________________________________________
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Root Zone Management for Greenhouse Crops _________________________________________________________ Carbon Dioxide Simple Sugars Water Oxygen Energy ___________________________________________________
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Root Zone Management for Greenhouse Crops _________________________________________________________ How Does a Plant Grow? • Water • Carbon (C), hydrogen (H) and oxygen (O) • Nutrients from the root zone – Macronutrients (N, P, K, Ca, Mg, S) – Micronutrients (Fe, Mn, Zn, B, Cu, Mo, Cl) ___________________________________________________
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Root Zone Management for Greenhouse Crops _________________________________________________________ ___________________________________________________ 80 - 90% Water 10 - 20% C, H, O and other nutrients Fresh Plant Tissue
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Root Zone Management for Greenhouse Crops _________________________________________________________ ___________________________________________________ 10% 90% 10 - 20% C, H, O and other nutrients Dry Plant Tissue C, H and O from carbon dioxide and water Nutrients from fertilizers and media
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Root Zone Management for Greenhouse Crops _________________________________________________________ The Foundation of Root Zone Management Intensity The Root Zone Capacity Availability Balance ___________________________________________________
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Root Zone Management for Greenhouse Crops _________________________________________________________ The Foundation of Root Zone Management The Root Zone K + NO 3 - Cl - Ca ++ Intensity (EC) Capacity Availability Balance ___________________________________________________
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Root Zone Management for Greenhouse Crops _________________________________________________________ The Foundation of Root Zone Management Intensity Soil particle –+K The Root Zone (CEC) Capacity Availability Balance ___________________________________________________
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Root Zone Management for Greenhouse Crops _________________________________________________________ The Foundation of Root Zone Management Intensity The Root Zone H 2 O H + + OH - Capacity Availability (pH) Balance ___________________________________________________
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Root Zone Management for Greenhouse Crops _________________________________________________________ The Foundation of Root Zone Management Intensity The Root Zone Capacity Availability Ca:Mg Fe:Mn K:Ca:Mg Balance ___________________________________________________
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