Acron, the Russian fertilizer group, has been forced to slash the size and pricing of its London listing in a sign that investor appetite for commodity stocks has been battered by falling resources prices and fears of growing political interference from Moscow.

Acron plans to place 20,000 shares on the London Stock Exchange and 10,000 in Moscow at US$9 per global depository receipt or US$90 per share, way below the price range of US$12-15 per GDR and US$120-$150 per share announced in July, sources close to the deal said.