He was involved in high - profile litigation in relation to the effectiveness of the Maxicrop brand of fertilizer .
Douglas Charles Edmeades ONZM ( born 1949 ) is a New Zealand soil scientist .
Douglas Charles Edmeades ONZM was involved in high - profile litigation in relation to the effectiveness of the Maxicrop brand of fertilizer .
Douglas Charles Edmeades ONZM ( born 1949 ) is a New Zealand soil scientist .