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Chapter 38 Plant nutrition

By Team GS. Chapter 38 Plant nutrition. Basic Plant info…. Energy inputs are required for the ongoing construction of a plant - Just like all organisms Plants aquire nutrients through photosynthesis and from the soil

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Chapter 38 Plant nutrition

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  1. By Team GS Chapter 38Plant nutrition

  2. Basic Plant info… • Energy inputs are required for the ongoing construction of a plant - Just like all organisms • Plants aquire nutrients through photosynthesis and from the soil • Nitrogen is particulary problematic because most plants are unable to convert atmospheric nitrogen available for absorption

  3. Continued…. • Some plants are able to capture animals and secrete digestive juices to make nitrogen available for absorption

  4. Sources of plant nutrients • Fixation of atmospheric carbon dioxide (CO2) • simple sugar with the energy of the sun

  5. Macronutrients • Carbon • Oxygen • Hydrogen • Nitrogen • Potassium • Calcium • Magnesium • Phosphorous • Sulfur

  6. Micronutrients • Iron • Manganese • Zinc • Boron • Copper • Molybdenum

  7. Soil • Soil is a perfect host for some bacteria and fungi that aid in obtaining nutrients in a useable form.

  8. Composition of soil • Plant growth is affected by the composition • Composition includes: Sand Rocks- various sizes Clay Silt Humus- partly decayed organic material 92 naturally occuring elements found in soil

  9. Topsoil • Roots are found in topsoil • Living organisms • Humus • ½ of all topsoil is made or airpockets

  10. Cultivation • Nutrients are recycled and made available to organisms on a continous basis • Major techniques have been created to help cultivators • Crop rotation- solution of nutrient deficiency • Why? • Ex soy beans are great for using nitrifying bacteria

  11. Process of nitrification

  12. How plants grow in soil • Most roots occur in the topsoil, which is the upper most top layer of soil and contains organic matter • Subsoil lies underneath the topsoil and contains larger mineral particles for plants to feed off • Raw material known as bedrock also releases nutrients over time and weathering.

  13. Fertilizers • Was first ment to be used in large production farms to replace nutrients lost in cultivated fields • Most commonly added is Nitrogen, phosphorous, and potassium • Both synthetic and organic fertilizer are often added in large quantities and can be significant sources of pollution in certain situations. • Less signs of pollution are shown with organic based fertilizers.

  14. Basic working

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