The ears on my sweet corn are poorly filled. What are possible causes?

Question:

The ears on my sweet corn are poorly filled. What are possible causes?

Answer:

Poorly filled ears are usually the result of poor pollination.  Hot, dry winds and dry soil conditions may adversely affect pollination and fertilization and result in poorly filled ears. Water sweet corn during pollination if the soil is dry.  Improper planting also may affect pollination.  Corn is wind pollinated.  Plant sweet corn in blocks of four or more short rows to promote pollination.