Some views on supplementation

摘要

This article is based on telephone conversations between Peter Flegg and the following growers to whom we are very grateful: Idris Hanmer, Baron Jackson Welsh Mushrooms, S. Wales, Simon Grayson, Bilting Mushrooms Kent, Brian Oxley, Monaghan Middlebrook Ltd, Somerset, Steve Woolley, Chesswood Produce Ltd, Sussex, Robert de Steiger, Harpers Hill Mushrooms, Devon and Mike Hayward and Jacobs. Blue Prince Mushrooms Ltd. Surrey.