January 7, 2009

Ladybugs a sign of healthy olive trees

Spanish researchers say ladybugs in olive orchards are a good indicator of the groves' health and sustainability.

The University of Granada found that ladybugs are a useful way of distinguishing organic, conventional and integrated farming systems.

The university said a two-year study of three large Spanish olive groves showed the richness and abundance of ladybugs was higher in organic orchards.