1.   Angry farmers used tractors as blockades on the streets.

2.   Farmers use chemicals to kill insects that would destroy their crops.

3.   Many farmers use low-flying aircraft to water their crops.

4.   Now, fruit trees are sprayed to cure their diseases, and salmon farmers use drugs by the sack.

5.   The environmental agency is taking aim at a popular but dangerous chemical used by farmers.

6.   The farmer was using a tractor to plough the field.

7.   The farmers use an intricate system of drainage canals.

8.   The larger or very intensive farmers had generally used training to prepare themselves and their men much better than the smaller units.

9.   The farmer used an organic pest control on his crops.

10.   Atrazine is used by farmers to control weeds in maize, but is not seen as essential.