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Last updateMon, 24 Jun 2019 2pm

World News

Warning of crops yield fall

A study says that crops yields around the world could fall within a decade unless action is taken to speed up the introduction of new varieties.
Temperatures are rising faster than the development of crop varieties that can cope with a warmer world.
In Africa, researchers found that it can take 10-30 years before farmers can grow a new breed of maize.
By the time these new crops are planted, they face a warmer environment than they were developed in.
The scientists behind the study, published in the journal Nature Climate Change, looked closely at the impact of temperature rises on crop duration - that's the length of time between planting and harvesting.
They found that in a warmer world durations will be shorter meaning these varieties will have less time to accumulate biomass and yields could be affected.

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