From a random sample of 10 discussion groups, production per farm for those with an average of 6 years in a group was 6621 kg milkfat ahead of those in their first year. The farmers joining discussion groups were producing at district average at the time of joining. The extension input to obtain these results on 106 farms amounted to less than that of half a consulting officer. There would appear to be a potential to lift national dairy production by 10% over the next 10 years within those farmers not making regular use of extension services alone. The initial contact with these farmers would need to be made through unsolicited visiting.
