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Sustainable Agriculture

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Sustainable Agriculture Chapter 11 APES January 2007 GOALS: Define sustainable agriculture Examine the obstacles Explore options to enhance the sustainability of ... – PowerPoint PPT presentation

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Title: Sustainable Agriculture


1
Sustainable Agriculture
  • Chapter 11
  • APES January 2007

2
GOALS
  • Define sustainable agriculture
  • Examine the obstacles
  • Explore options to enhance the sustainability of
    agriculture over time

3
From Hunter and gatherer.
4
To an agrarian lifestyle
5
To today.
6
How can we make it sustainable?
7
What is Sustainable Agriculture?
  • The goal is to sustainably produce enough food
    and fiber and repair the damage caused by the
    process.

8
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10
Where can we find the solutions to these problems?
  • The Past and the Future.
  • Old methods that have been long forgotten and new
    technologies we have yet to try out.

11
Step 1 Conserve the SOIL!
  • Carefully manage these factors
  • Land management
  • Ground cover
  • Tillage system
  • Climate
  • Soil type

12
Managing the Topography
  • Contour farming
  • Strip farming
  • Terracing
  • Perennial species

13
Contour Farming
14
Contour Farming
15
Strip farming
16
Strip farming and contour farming
17
What do these do?
  • Contour farming works across the hill rather than
    down, slowing down the erosive process.
  • Strip-farming allows the farmer to harvest one
    crop while leaving the other crop behind to hold
    the soil in place.

18
Terracing
19
Terracing
  • This method
  • Involves shaping
  • The land to create
  • Shelves to hold
  • Soil and water
  • And nutrients.

20
Perennial species orchards
21
Perennial species grapes
22
Perennial species Alfalfa
23
Perennial Crops HAY
24
Provide ground cover
  • LEAVE crop residue
  • PROVIDE a cover crop

25
CROP RESIDUE
26
Pros and Cons of Crop Residue
  • This can save 99 of the erosion from happening
  • But it can cause disease and pest issues
    requiring more spraying the following year.

27
Cover Crops
28
Cover Crops
29
Cover crops facts
  • Rye, wheat, alfalfa can be planted immediately
    and plowed under at planting time. The problem
    you have to pay to seed it and that costs .
  • This can provide a source of fertilizer for the
    next crop or allows for a double harvest. It can
    also improve the soil.

30
Mulch
31
Reduce the Tillage Impacts
32
Moldboard Plow
  • Controls weeds
  • Controls pests
  • Brings nutrients up
  • Reduces competition
  • Provides good seedbed
  • Improved drainage
  • Improved aeration

33
LESS IS MORE
  • Less Plowing and cultivation
  • Better water management
  • Preserves soil
  • Saves energy
  • Increases crop yields

34
Reduced Tillage Systems
  • Minimum till
  • Conserv-till
  • No-till

35
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37
Minimum till
38
Conserv-till
39
No-till
40
Low Input Sustainable Agriculture
  • Soil Facts LISA
  • Articlegt great history!
  • US GOVT

41
GO ORGANIC?
  • USDA organic site
  • Wikipedia
  • Cnn site
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