Bob Nielsen

100 articles by this author

Article List

thumbnail image

The grain fill period begins with successful pollination and initiation of kernel development, and ends approximately 60 days later when the kernels are physiologically mature. During grain fill, the developing kernels are the primary sink for concurrent photosynthate produced by the corn plant.


thumbnail image

The other day, one of the patrons of Rudy’s Bar and Grill walks in with an ear of corn that exhibited long, flowing locks of blonde silks tumbling down the sides of the husk leaves and asked two questions: “Why are the silks so long?” and “Do such long silks bode ill for the success of corn pollination?”


thumbnail image

– Corn produces individual male and female flowers on the same plant.
– The ear represents the female flower of the corn plant.
– Severe soil moisture deficits can delay silk emergence and disrupt the synchrony of pollen shed and silk availability, resulting in poor kernel set.






thumbnail image

The cost of seed corn is the largest single variable input cost for most Indiana corn growers (Dobbins et al., 2017). Minimizing that cost involves a combination of shrewd purchasing skills and wise selection of seeding rates. This summary focuses on our recent research evaluating the yield response of corn to plant population in field scale trials conducted around the state of Indiana.


Every year, I get a lot of phone calls from folks wanting to know why their neighbor’s fields of corn ended up with such poor uneven lousy-looking stands. Since some seem so ecstatic about this happening to their neighbors, I figured maybe they would like to know how to prepare a crappy stand of corn for themselves next year.