Examine the yield performance of new Bt corn varieties.
| Cooperator: | Tom Weiler |
| County of Site: | Morrow |
| Nearest Town: | Chesterville |
| Major Soil Type: | Millgrove |
| Drainage: | Systematic |
| Irrigation: | None |
| Tillage: | Fall chisel, field cultivate |
| Previous Crop: | Soybeans |
| Soil Test: | pH 7.0 P 23 ppm K 154 ppm |
| Fertilizer: | 180# NH3 pre-plant, 11 gallon 10-34-0 + 46# P2O5 + 120# K2O |
| Herbicide: | Dual II - 1 qt., Atrazine 1.8#, Bladex 1.8# |
| Plant Population: | 26,700 |
| Plant Pop. @Harvest: | 25,800 |
| Variety: | 4 Bt varieties plus non-Bt tester |
| Planting Date: | April 30 |
| Harvest Date: | October 3 |
| Variety | # Day Corn | % Harvest Moisture | Yield Bu/Ac | % of Tester |
|---|---|---|---|---|
| Countrymark N6800 Bt | 112 | 27.2 | 198.38 | 118 |
| Countrymark N4640 Bt | 103 | 19.9 | 122.74 | 72 |
| Pioneer 35NO5 | 105 | 22.4 | 157.76 | 93 |
| Pioneer 33Y09 | 113 | 28.8 | 174.26 | 103 |
| Pioneer 3335 (Tester) | 111 | 25.3 | 169.42 | - |
This research project was designed to study the effect of Bt corn on yield. Last year in an adjacent field, European corn borer was as bad as we had in the county. Corn borer was not a problem this year. Pioneer 3335 was used as the tester. Testers were on each side of each variety. Results are the average of three approximately quarter-acre replicated strips.
For additional information, contact:
Steve Ruhl
Ohio State University Extension - Morrow County
871 W. Marion Rd., Suite 102
Mt. Gilead, OH 43338
419-947-1070
ruhl.1@osu.edu