We have heard plenty in the news about the problems associated with farming. As land use intensifies, our rivers receive more and more nutrients and the result is that you can't swim in over 80 per cent of them after rain.
40 per cent of New Zealand's land area is used by pastoral farming and the great shift away from sheep and towards dairy cattle (which have gone up a herd of 3.4 million to 5.9 million from 1990 - 2010) has increased the impact on waterways dramatically.
So what are we going to do about this? Farmers see themselves as the backbone of the New Zealand economy and yearn to be recognised as such by urban populations who increasingly view them as polluters.
It is clear that simply criticising farming with negativity is not going to change how it works. Those farming who have a negative impact on the land and water are less likely to change their systems if they feel like they are backed into a corner. It is certainly true that a great deal of them do care deeply about the land and see themselves as stewards.
With milk prices plummeting, those of us who are concerned about the health of the waterways are worried that the environment will drop down the priority list - as recent conversions to dairy are suddenly struggling to survive.