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Ch 37- Plant Nutrition-Outline

Ch 37- Plant Nutrition-Outline - Chapter 37 Plant nutrition...

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Chapter 37
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Plant nutrition also depend on soil nutrients, such as water and minerals require certain chemical elements to complete their life cycle Every organism continually exchanges energy & materials with its environment plants derive most of organic mass from CO 2 in the air root & shoot systems of a vascular plant ensure extensive networking w/ both sources & reservoirs of inorganic nutrients
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Macronutrients and Micronutrients in plants <50 chemical elements identified among inorganic substances only 17 of these are essential to plants essential nutrient is a chemical element required for plant to complete its life cycle Hydroponic cultures All nutrients except K + All nutrients
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Essential nutrients Nine of the essential elements are called macronutrients Required in large amounts
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Essential nutrients Remaining eight are called micronutrients If concentrations are too high, damage is possible to the plants
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Symptoms of Mineral Deficiency depends on nutrient’s function & mobility w/in plant deficiency of a mobile nutrient usually affects older organs more than young ones deficiency of a less mobile nutrient usually affects younger organs more than older ones Most common defiencies: Healthy Phosphate Potassium Nitrogen
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Soil quality is a major determinant of plant distribution and growth along w/ climate, soil texture & composition are major factors determining whether a plant can grow well in a certain location The Soil topsoil is a mixture of particles of rock, living organisms, & humus horizons often visible in vertical profile Texture soil’s general structure Composition organic and inorganic chemical components Humus remains of partially decayed organic material Topsoil other vertical layers
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