Our season started with early planting and reasonable emergence in many cases. Early in the season dry conditions may have promoted deeper rooting of the crop which helped it tolerate stresses later in the season. Again this year we saw that many producers are striving for higher plant populations with some over 30,000 plants per acre at harvest. Overall our average was near 28,000 plants per acre, up about 500 plants/acre from last year. Even with these plant populations, the number of down and barren plants was relatively low and similar to last year, approximately 5 and 2% respectively, indicating that modern hybrids have been bred to tolerate these higher plant populations. Another statistic this year of interest was the emergence, or the ratio of plants per acre to seed drop. We found this to average about 90%, which is excellent, given the number of fields planted in April in this years program. Our data also show that top yields can be achieved without excessive inputs as many producers reported top yields with less than one pound of N per bushel of corn- some as low as 0.9 lb of N per bushel. Also, many producers have again demonstrated that with the right management, top yields can be achieved with no-till production.
Congratulations to all the producers who participated in this years prorgam. Many thanks are due to the extension agents and crop consultants who help collect the yield and cultural information for the club. Also, many thanks are due to Mark Antle in the Department of Crop and Soil Sciences for his diligent work in pulling this report together.
Greg W. Roth
2005 Champions of the 5-Acre Corn Club.
5 Acre Corn Club Champions for 2005—3 Year Average Yield.
A summary of the results, ordered by county, of the Five-Acre Corn Club including management practices of the participants.