But the difference between ears emerging on day zero and 3 to 4 days late is negligible (0.01 pound), and the picture illustrates that ears from plants emerging first weren’t always the heaviest in the row. Obviously, you want plants to emerge uniformly, and the trend, ever so slightly, is toward bigger ears for plants emerging first. Average for the 1- to 2-day delay was 0.51 pound for 3 to 4 days was 0.56 pound for 5 days was 0.52 pound and for 9 to 14+ days was 0.5 pound per ear. Average weight for ears from plants that emerged first was 0.57 pound, cob and all. Is that a fluke? Row 4 was 1/1,000 of an acre, with 28 harvestable ears. The ears from plants with no delay are in the middle of the pack.

The two heaviest ears are from plants that emerged several days late. From left to right, weights and days of delay were: Ear 1, 0.49 pound, 9 to 14+ days Ear 2, 0.53 pound, 5 days Ear 3, 0.51 pound, no delay Ear 4, 0.44 pound, 9 to 14+ days Ear 5, 0.53 pound, 3 to 4 days Ear 6, 0.39 pound, 5 days and Ear 7, 0.49 pound, no delay. So, which of these seven ears weighs the most, and which weighs the least? You would expect ears from plants emerging the first day to lead the pack, but that’s not what the digital scales reported. They don’t compensate as much as soybeans, but they can still put on a bigger ear than if it’s normal spacing or they’re crowded.” Comparing ears

Plants with extra room will compensate for that missing plant. It was inaccurate because you must account for spacing. “In 2020, we attempted to evaluate the effect of delay in emergence on ear size without taking plant spacing into account. “Spacing along the row also impacts how big of an ear a plant produces,” says Dave Nanda, director of genetics for Seed Genetics Direct. Related: Delay in corn emergence doesn’t tell whole story

That may explain why that ear is bigger than you might expect with such a long delay in emergence. You can’t see an ear to its left because it is out of the picture, but there was a 12-inch gap in the row. The ear farthest to the left is from a plant that emerged somewhere between nine and 14 or more days after the first plants emerged. If there is no number, it signifies that the plant producing that ear was the first to emerge. The numbers represent days of delay in emergence. The distance between ears matches the spacing of stalks along the row from which these ears were shucked. A section of Row 4 in the conventional tillage half of the Corn Watch ’21 field is laid out before you in the picture.

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