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The best time for corn pollen production is when it is exposed to sunlight. Corn plants begin releasing pollen through photosynthesis, and the amount of pollen increases with rising temperatures. Pollen is especially abundant in the morning, so corn is most active when the sun is up and the temperature is around 25-30°C, rather than in the dim morning light. If the soil is dry, the amount of pollen will decrease, so please be careful to keep it moist.