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purpose
Evaluate the influence of several cover crop cultivars seeded after wheat harvest on weed suppression.
- Cooperator: KBS
- Nearest town: Kalamazoo
- Soil type: Kalamazoo Sandy Loam
- Seeding method: No-till drill
- Wheat harvest date July 6, 1999
- Cover seeding date: July 8, 1999
- Sampling date: October 21, 1999
- Exp. design: Randomized Complete Block
- Replications: 4
Results
| Treatment |
Seeding Rate
(lb/A) |
Cover Crop Biomass
(lb/A) |
Weed Biomass
(lb/A) |
| Oilseed Radish |
20 |
1414 B |
43 B |
| Hairy Vetch |
30 |
2644 A |
156 B |
| Crimson Clover |
15 |
1917 B |
348 B |
| Soybeans |
1 bu |
808 C |
442 B |
| Control |
|
0 D |
2483 A |
| LSD@ 0.05% |
|
538 |
574 |
October 14, 1999 (click on image for larger picture)
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| Oilseed Radish |
Hairy Vetch |
Crimson Clover |
Soybeans |
Control |
Discussion
The planting of any cover crop suppressed weeds substantially better than planting no cover crop. Hairy vetch produced the most biomass, with soybeans producing the least biomass. Droughty conditions this summer affected this experiment. (This experiment was repeated in 2000)
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