Lesson 4 (2-1-16) - Lesson 4 Plant Nutrition and Defense Soil Highly weathered outer layer of the Earths crust The Earths crust includes an estimated 92

Lesson 4 (2-1-16) - Lesson 4 Plant Nutrition and Defense...

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Lesson 4: Plant Nutrition and Defense Soil Highly weathered outer layer of the Earth’s crust The Earth’s crust includes an estimated 92 naturally occurring elements o Most are found in the form of inorganic compounds called minerals Plants depend on soils o Slide 4: Picture of layers O Horizon: Most organic layer A Horizon: Very organic, everything decomposed at surface, worm in soil, water gets pulled out B Horizon: Many inorganic minerals C Horizon: Least organic, mostly rock (bedrock), layer of sandstone, water goes horizontal Water and Mineral Availability About half of the soil volume is occupied by pores o May be filled with air or water or both Hydrogen bonds adhere water to soil particles and dissolve nutrients Aquatic angiosperms like seagrasses are adapted to get most, if not all, of their nutrients by diffusion directly from water “Air plants” like bromeliads have roots that absorb water and nutrients from the fine dust or particles along the tree branches that they attach to Macro and Microelements Most basic nutrients are elements Macroelements: plant nutrients required in relatively large amounts Microelements: plant nutrients required in relatively small amounts Plant Macronutrients Chris HOPKINS Ca-fe Mighty Good Plant Micronutrients Closed - Chlorine Monday - Manganese Morning - Molybdenum See u - Copper Zoon – Zinc
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Nutrient Groups Protein Lipid
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