In 2009, Nufarm NZ (who distribute ProGibb SG in NZ) asked an independent expert to review all their data on ProGibb SG. Dr Edmeades says after reviewing all the research data on ProGibb SG, he can’t fault Nufarm’s science process to date. He also said "It is reasonable to conclude from this data that ProGibb SG when applied at the recommended rate within 0 – 5 days following grazing will increase relative pasture production by 36% on average with a range of 12% to 63%, providing the pasture is utilised within 40 – 50 days following application."