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PRT 2008 Lecture 9.

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Presentation on theme: "PRT 2008 Lecture 9."— Presentation transcript:

1 PRT 2008 Lecture 9

2 Sustainable Agriculture

3 Definition Farming systems that are capable of maintaining their productivity and usefulness indefinitely. Such systems must be resource-conserving, socially supportive, commercially competitive and environmentally sound.

4 Sustainable agriculture
Produce food without depleting the earth’s resources Not polluting Follows the principle of nature Take industrial production as its model Result in agri-business Socially acceptable Follow ecology-based approaches Promote biodiversity, recycle plant nutrients, protect soil from erosion, conserve water and integrate crops and livestock It is profitable

5 Objectives of sustainability
Economic sustainability Social sustainability Environmental sustainability

6 Economic sustainability
The family saving is going up Debt is going down The farm enterprise is consistently profitable Purchase of fertilizer is decreasing Reliance on government payment is decreasing

7 Social sustainability
The farm support businesses in the community Money circulate within the economy The number of rural family is going up Young people take over their parent’s farms University graduates return to the community after graduation

8 Environmental sustainability
There is no bare ground Clean water Wildlife is abundant Fish in the stream The farm landscape is diverse in vegetation

9 Farm as an ecosystem On any farm, 4 ecosystems are at work. It will conserve soil and water resources, reduced cost.

10 Applying the principle of sustainability
Keep the soils covered throughout the year Diversification

11 Diversification Crop rotation Use cover crops and green manures
Use compost and fertilizers Weed management Pest management Disease management


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