Maleic Hydrazide in potato volunteer control
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This report from 2006 has been re-posted on our website as it has become topical this season.
Maleic hydrazide (MH) is a molecule that dates from the late 1940’s. It has been available in the US since that time, but only appeared in the UK in the mid 1980’s. The effect of MH is to inhibit cell division rather than cell expansion.