Which weather phenomenon blowing down from the Andes can disrupt flowering and cause coulure?

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Multiple Choice

Which weather phenomenon blowing down from the Andes can disrupt flowering and cause coulure?

The wind that comes off the Andes and down into the Argentine plains is a warm, dry, downslope airflow. When it arrives during flowering, it quickly raises temperatures and lowers humidity, stressing the vines and directly affecting the delicate process of pollination and fruit set. That stress can cause flowers to abort or not set properly, leading to coulure. Among the options, this wind is the one that uniquely originates from the Andes, matching the described effect. The others come from different regions and don’t fit the Andes origin or the same impact on flowering.

The wind that comes off the Andes and down into the Argentine plains is a warm, dry, downslope airflow. When it arrives during flowering, it quickly raises temperatures and lowers humidity, stressing the vines and directly affecting the delicate process of pollination and fruit set. That stress can cause flowers to abort or not set properly, leading to coulure. Among the options, this wind is the one that uniquely originates from the Andes, matching the described effect. The others come from different regions and don’t fit the Andes origin or the same impact on flowering.

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