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Winter isn't coming: climate change hits Greek olive crop
https://phys.org/news/2023-11-winter-isnt-climate-greek-olive.amp"The old growers here say it is very important for the trees to rest in the winter. It takes about one to two months of good cold weather for the tree to rest... so that it can yield later," Vassilaki said.
Athanassios Molassiotis, an agronomist and head of the arboriculture lab of Thessaloniki's Aristotelio University, said his team recorded an increase in temperature of two degrees during October, November and December 2022 compared to a year earlier.
This affected the olive buds "because we know that the tree bears fruit after cold winters, especially the Halkidiki variety, which has high requirements at low temperatures in winter," he said.
"We found that in many trees, there was no flowering and therefore no fruit afterwards," Molassiotis said.
Athanassios Molassiotis, an agronomist and head of the arboriculture lab of Thessaloniki's Aristotelio University, said his team recorded an increase in temperature of two degrees during October, November and December 2022 compared to a year earlier.
This affected the olive buds "because we know that the tree bears fruit after cold winters, especially the Halkidiki variety, which has high requirements at low temperatures in winter," he said.
"We found that in many trees, there was no flowering and therefore no fruit afterwards," Molassiotis said.
Chill hours are a common requirement for many fruiting trees. Something similar happened to Georgia's peach crop.
https://www.usatoday.com/story/news/nation/2023/06/06/georgias-peach-crops-2023-suffers/70293494007/