Northern Prairie Wildlife Research Center
Table 6:Density of nests/10ha on conventional, minumum-tillage, and organic fields fallow, sunflower, and wheat in southeast North Dakota, 1992-93.
| Nest densitya | SE | |
| Field type | ||
| Conventional | 0.5AB | 0.02 |
| Minimum-tillage | 1.2A | 0.03 |
| Organic | 1.0B | 0.02 |
| Crop type | ||
| Fallow | 1.5CD | 0.04 |
| Sunflower | 0.5C | 0.02 |
| Wheat | 0.6D | 0.01 |
| aNumbers in a column followed by the same letter differ (P ≤ 0.05). | ||
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://www.npwrc.usgs.gov/resource/birds/birduse/table6.htm
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