Does the rainbow promise better weather, wetter weather, both or more extreme weather? What can we actually do about it?
On 24 August 2017m the Water Resources Institute published a piece on their website looking at “7 Reasons We’re Facing a Global Water Crisis” in a piece written by Leah Schleifer. With credit to them, I try here to relate those lessons to British farming and maybe farming elsewhere in developed counties that do not really think water may be a significant economic problem sooner rather than later.
Reason 1. We’re Changing the Climate, Making Dry Areas Drier and Precipitation More Variable and Extreme.
Without mentioning any particular name, one who denies climate change must either be demented or have some ulterior motive. In most farming areas, water will in general get shorter in areas where it is already short and rain, when it does happen, at higher rates and with more wind. In general terms, most climatologists agree, this trend will continue. However, there is some evidence that we may have already started to switch off, or otherwise change, the Gulf Stream. If that turns out to be the case, the western areas of the UK may get colder, not warmer, especially in winter.
The effects of these changes will affect everything in farming including field drainage, soil organic matter, the way we control weeds in crops. We had better be ready to respond to these pressures. One thing is for sure – it will not stay the same.
There is one rule to watch; mostly, where rain is already short in the eastern areas, we will get less and when it happens it will be in heavy weather. Cereal crop lodging before harvest will be an increasing risk. All areas may experience flash flooding.
Conservation farming action;
- Add organic matter and reduce cultivations to reduce oxidation of organic matter.
- Subsoil at intervals.
- Maintain ditches and field drainage.
Bill Butterworth, Land Research Ltd., September 17