This is because when the sunlight hits the leaves, it allows photosynthesis to occur. But when you have extended periods of sunlight, like summer, it causes photosynthesis to continue for a longer time, which causes rapid energy storage. This makes excess food for the plant which gives the plant more energy for growth and pollination.
Explanation: Crops in the Arctic region grows more in summer season because there is more absorption of sunlight by the leaves and other parts of the body. More sunlight favors the growth of crops and due to this reason the crops in the summer season grows better than in winters
