They argue that large-scale bioethanol plants will inevitably lead to the clearing of forests to make way for new crop land.

And as part of a mixed farming system, clover-rich pastures provide a non-chemical way of building up fertility on crop land.

Single crop 25%, double crop 41% and treble crop land 34%.

Single crop 49%, double crop 39% and treble crop land 12%.

Flooding caused major damage to crops, while landslides destroyed crop land across the country.