1.   Extensification for meat production purposes is therefore an option that is consistent with sustainable agriculture.

2.   Hence sustainable agriculture could replace unsustainable agriculture, reducing the impact of erosion and flooding on downstream agricultural areas.

3.   One battleground in the debate is the issue of whether biotechnology threatens sustainable agriculture.

4.   Quietly, slowly and significantly, sustainable agriculture is sweeping the farming systems of the world.

5.   The basic challenge for sustainable agriculture is to maximise the use of locally-available and renewable resources.

6.   What is the expected response of farmers in industrialised countries to sustainable agriculture?

7.   While companies talk about sustainable agriculture, they create plant varieties that can withstand being sprayed by their most virulent herbicides.

8.   And Nagengast is serving as executive director of the Kansas Rural Center, a nonprofit agency that works on sustainable agriculture and family farming issues.

9.   And some experts think GM crops will pale by comparison with sustainable agriculture.

10.   Few countries have switched wholesale to sustainable agriculture.