Steve Prochaska, Extension Agriculture and Natural Resources Agent
To evaluate the yields of two Roundup Ready soybean varieties in a Modified Relay Intercropping (MRI) system.
| Test Site: | The Ohio State University | Fertilizer: | Applied fall 1997:26-104-120 |
| Unger Farm | spring 103 lbs N applied 3/27/98 | ||
| County: | Crawford | Herbicide: | 1 qt Roundup Ultra |
| Major Soil Type: | Blount | applied 7/31/98 | |
| Drainage: | Non-Systematic | Interseeded: | Soybeans 6/8/98 |
| Irrigation: | None | Seeding Rate: | 75 lbs/acre |
| Soil Test | pH 6.9 | Varieties: | Asgrow AG2701 (2,750 seeds/lb) |
| P | 31 ppm | Pioneer 93B01 (3,200 seeds/lb) | |
| K 122 ppm |
Soybeans were planted into 10-inch row wheat with a Great Plains 1500 drill. Drill was on a three-point hitch of the tractor to plant soybeans. The same drill was used for both wheat and soybean planting. Twenty-inch tram lines were also established in the 15' wide plots. Weeds present included giant ragweed, volunteer wheat, giant foxtail, lambs quarter, Canada thistle, field bindweed. Experiment design was completely randomized with three replications.
| Variety | Yield (bu/acre) |
|---|---|
| Asgrow A2701 | 41.97 |
| Pioneer 93B01 | 39.77 |
| F = 1.13 Not significant at P = 0.05 CV = 6.2% | |
Roundup Ready soybeans performed very well in a Modified Relay Intercropping system in 1998. The two varieties tested were not significantly different from each other.
For additional information, contact:
Dr. Steve Prochaska
Ohio State University Extension, Crawford County
117 East Mansfield Street
Bucyrus, OH 44820
419-562-8731
prochaska.1@osu.edu