They compost their fruit peelings from the key stage one fruit scheme and then use the compost on their crops.
'Then they put it on their crops.
Moreover, farmers use a range of chemicals on their crops including fungicides, pesticides and herbicides.
For the farmers of Boca Poza, this learning experience has changed their perspective on their crops.
That there are actual farmers who spend less time on their crops is beside the point.
Now agricultural companies increasingly worry about the impact of the price fluctuations of oil on their crops.
Bill Robertson, the company founder, said he was inspired to develop the technology after watching his uncle's hard work to get reliable information on their crops in Iowa.
The PRI's power among peasants -- who live mostly on their crops and government assistance -- could not quash a palpable desire for change.
5.57pm BST My verdict There is, it seems, no effective way for oilseed rape farmers to combat pests on their crops this autumn.
Local people, dependent on their crops, said they despaired of making a living because they were afraid to work fields peppered with unexploded munitions.
Many frogs lost their homes when farm ponds were filled in and others were wiped out accidently by farmers' overuse of chemicals on their crops.
