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Haydock PPJ. 2002. Just how much do you know about PCN? Potato Review, January 2002, pp12-15 & 38-39.
Haydock PPJ, Davies R. 2001. When is the best time to apply Telone? Potato Review. September 2001, pp 10-12.
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Haydock PPJ. 1999. Nematicides essential in PCN integrated approach. Arable Farming, March 13 1999, pp16-18.
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Haydock PPJ. 1998. Protect staff by safe use of nematicides. Potato Review, January 1998, pp. 36-38.
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