Chapter 13: Food, Soil Conservation, and Pest Management - PowerPoint PPT Presentation

1 / 18
About This Presentation

Chapter 13: Food, Soil Conservation, and Pest Management


Title: Chapter 13: Food, Soil Conservation, and Pest Management Author: bromwell Last modified by: Administrator Created Date: 1/1/1601 12:00:00 AM – PowerPoint PPT presentation

Number of Views:219
Avg rating:3.0/5.0
Slides: 19
Provided by: bromwell


Transcript and Presenter's Notes

Title: Chapter 13: Food, Soil Conservation, and Pest Management

Chapter 13 Food, Soil Conservation, and Pest
We are nine meals away from anarchy. Lord
Cameron of Dillington
  • January February 2012

Food for Thought
  1. What do humans need to live?
  2. What do people take into their bodies from the
    environment to help them survive?
  3. Why do we need air, water, and food to survive?

An essential element
  • is required for an organism to complete its life
  • cannot be replaced by another element
  • is directly involved in the organisms
    metabolism and
  • is required by many different organisms.
  • Adapted from Arnon, D. Stout, P. (1939). The
    essentiality of certain elements in minute
    quantity for plants with special reference to
    copper. Plant Physiology, 14(3), 599-602.

(No Transcript)
Elements Essential for Human Growth
Food Security
Today we produce more than enough food to meet
the basic nutritional needs of every person on
the earth.
Food Security
  • every person in a given area has daily access
    to enough nutritious food to have an active and
    healthy life.
  • Impediments to national food security
  • Poverty
  • War and corruption
  • Harmful environmental effects of agriculture
  • Climate change

  • To maintain good health, people require
    macronutrients and micronutrients in their diet.
  • Chronic undernutrition (hunger) people cannot
    grow or buy enough food to meet their basic
    energy needs
  • Malnutrition people who consume a diet deficient
    in protein, calories, and/or other key nutrients
  • Usually a low protein, high carbohydrate,
    vegetarian diet
  • Affects 1 in 6 people in developing countries
    mostly children

  • Micronutrient deficiency Underconsumption of
    even small amounts of nutrients with necessary
    health benefits or essential functions in the
  • 1 in 3 suffer from vitamin or mineral deficiency
  • Vitamin A increased susceptibility to childhood
    diseases/ blindness
  • Iron anemia, fatigue, infection, increases
    likelihood women die in childbirth
  • Iodine goiter, proper metabolism

  • a severe shortage of food in an area
    accompanied by mass starvation, many deaths,
    economic chaos, and social disruption.
  • Causes
  • Crop failures
  • Drought
  • Flooding
  • War
  • Other natural disasters

Sudan famine, 2000
  • occurs when food energy intake exceeds energy
    use and causes excess body fat.
  • Consequences of overnutrition
  • Greater incidence of disease and illness
  • Lower life expectancy
  • Reduced quality of life
  • Disproportionate expenditure of capital
  • 93 of Americans fall into this

Growing Food
  • Do plants need food?
  • 2. Do you think that plants require the same
    essential elements as humans?

Elements Essential for Plant Growth
Elements Essential for Plant Animal Growth
Sources of Essential Nutrients
Essential Nutrient Air Water Soil
Boron (B)
Calcium (Ca)
Carbon (C)
Chlorine (Cl)
Copper (Cu)
Hydrogen (H)
Iron (Fe)
Magnesium (Mg)
Manganese (Mn)
Molybdenum (Mo)
Nickel (Ni)
Nitrogen (N)
Oxygen (O)
Phosphorus (P)
Potassium (K)
Sulfur (S)
Zinc (Zn)
Sources of Essential Nutrients
Essential Nutrient Air Water Soil
Boron (B) S
Calcium (Ca) S
Carbon (C) A S
Chlorine (Cl) S
Copper (Cu) S
Hydrogen (H) A W S
Iron (Fe) S
Magnesium (Mg) S
Manganese (Mn) S
Molybdenum (Mo) S
Nickel (Ni) S
Nitrogen (N) S
Oxygen (O) A W S
Phosphorus (P) S
Potassium (K) S
Sulfur (S) S
Zinc (Zn) S
Essential Element Summary
  • Plants get their essential elements (nutrients)
    from three sources
  • Water hydrogen and oxygen
  • Air hydrogen, oxygen, and carbon
  • Soil All essential elements
  • Farmers need to know which essential elements are
    found in the soil and how much of each is present.

  • Due January 24
  • Read pp.67-70 in text
  • Research the N-P-K rating on fertilizers. What is
    it? What essential elements are involved? Why are
    these important to plants? Submit paragraph in
    MLA format to drop box.
  • LAB Wednesday!
  • Goggles and aprons REQUIRED
Write a Comment
User Comments (0)