Climate change brews up trouble for coffee
Posted Wednesday, May 16 2012 at 21:36
As the world grapples with climate change, Kenya coffee and tea farmers are being forced to wake up to the reality of these new conditions as scientists paint grim prospects for the cash crops.
Scientists warn that this change is permanent and may force growers to drastically change their farming methods, including the type of crops. Experts predict that certain tea and coffee-growing areas will no longer be viable by 2050.
“The central region will become less viable for coffee due to drier weather while the western one will become more suitable due to increased precipitation,” said Patrick Kimari, a researcher with Kimathi University College of technology in Nyeri.
Dr Kuria Thiong’o, a geomatic engineering and geospatial information scientist at the university noted that tea-growing will also be forced towards the higher regions due to drier weather patterns.
But most of these areas are protected forest, which means that tea will slowly be forced out of production, he added.
Inability to quantify the extent of expected changes mainly due to lack of research into the field have shrouded climate change in ambiguity and as a result, no clear-cut mitigation policies have been formulated.
But on the ground, farmers are already experiencing the harsh effects of climate change with a host of new challenges previously not experienced.
Every year it is going from bad to worse. Sometimes the rain is too much and sometimes it comes at a time when it is not anticipated while at other times it is very hot when it should be raining,” said Mr Paul Mugo a tea farmer from Keru in Kiriaini.
The latest example of the grave effects of climate change was the frost that hit most tea- growing areas in the country, causing heavy losses.
“We only used to hear of frost. It has now hit us in a big way,” said Mr Mugo who owns 3,000 tea bushes on his three-quarter- acre farm.
The frost was caused by high temperatures during the day followed by low temperatures during the night, forming a blanket of frost that settled on tea.
In Murang’a and Nyeri, a combination of frost and the dry weather that followed led to a 20 per cent drop in production.
Since no one expected that such a phenomenon would occur as a result of climate change, the losses were heavy despite the availability of simple mitigation measures such as trees which can provide a sink for the frost blanket.
“My field was not affected because I have planted a lot of trees. But in my neighbour’s farm for example, there was no harvest because of the frost and the heat that followed after the frost,” said Mr John Mwaniki from Iriaini in Othaya district.
Jane Nyambura from Ethical Tea Partnership, a non-commercial consortium of tea buyers and packers from Australia, UK and the US noted that the changing weather was expected to lead to new pests and crop diseases.