Bird use of an experimental strip intercropping system in northeast Iowa
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Published source details
Stallman H.R. & Best L.B. (1996) Bird use of an experimental strip intercropping system in northeast Iowa. Journal of Wildlife Management, 60, 354-362.
Published source details Stallman H.R. & Best L.B. (1996) Bird use of an experimental strip intercropping system in northeast Iowa. Journal of Wildlife Management, 60, 354-362.
Actions
This study is summarised as evidence for the following.
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Plant more than one crop per field (intercropping) Action Link |
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Plant more than one crop per field (intercropping)
A study on two arable farms in Iowa, USA, in May-August 1992-3 (Stallman & Best 1996), found that 35 bird species used fields under an experimental intercropping system, with an average of 108 birds/count/100 ha. Three native species (red-winged blackbird Agelaius phoeniceus, common grackle Quiscalus quiscula and vesper sparrow Pooecetes gramineus) nested in the fields, but that only one nest of forty (2.5%) successfully fledged young. Destruction by farming activities was the largest cause of nest mortality (39%) followed by predation (29%). Desertion only occurred at 5% of nests. Strips were 4.6 m wide and contained corn, soybeans and oats as well as mammoth red clover Trifolium pratense.
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