“WHO. Increasing temperatures and more variable rainfalls on our Planet are expected to reduce crop yields in many tropical developing regions, where food security already is a problem.”
Note from author: Although WHO´s statement refers only to crop yields in many tropical developing regions, anyone who has even the slightest experience/understanding about agriculture and farming, along with general comprehension about biology/geography will realize that one of the major risks of agriculture involves weather. It also depends much upon fresh water, healthy soils and a healthy environment. If and when weather patterns change (drastically) by becoming less and less predictable, with e.g. too much rain, it can have significant impacts upon crop yields, or at worst, even destroy a whole crop.
With agriculture being the largest consumer of fresh water resources worldwide, there is a need for optimizing fresh water usage in the agricultural sector. FAO (2012) has published a report, Crop yield response to water with the purpose to serve primarily agricultural practitioners along with a number of other target groups with important information on how to possibly optimize fresh water usage in agricultural/farming practices. The complete report can be found here: Crop yield response to water
At another TEDx Talk, Mark Owen speaks about the future of water:
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