continued unabated, causing aesthetic damage to horse-chestnut, one of the favourite ornamental trees in European cities. Damage symptoms Larvae of the hor
employees, on the crops, and on the local environment. It has never been a favourite activity of mine. Biological plant protection is so much better. Although
predatory mite introduced by Koppert in the 60s, and it remains Rianne’s favourite. ‘It stands talls on its legs, is perfectly round and runs over the leaves
