Diversity: A Key Element of Sustainable Agricultural Systems

dc.contributor.author Liebman, Matt
dc.date 2018-08-10T17:37:54.000
dc.date.accessioned 2020-06-30T04:41:26Z
dc.date.available 2020-06-30T04:41:26Z
dc.date.issued 1998-11-18
dc.description.abstract <p>Over the last five decades, Iowa's agricultural landscape has become markedly less diverse in both crop and non-crop vegetation. In 1950, corn and soybean were planted on 27% and 6%, respectively, of Iowa's farmland, but by 1994, corn and soybean occupied 39% and 27% of the state's farmland (Kanwar and Klonglan, 1998). During this same period the percentage of Iowa farmland planted with oat fell from 19 to 2%; hay acreage dropped from 11 to 5% (Kanwar and Klonglan, 1998). This type of reduction in crop diversity across the landscape is related to low diversity in individual fields over time. More than 90% of the >21 million acres planted with corn and soybean in Iowa in 1991 contained only those two crops in 1989 and 1990 (USDA-ERS, 1992). Intensification of crop production in Iowa through drainage and field enlargement has resulted in a reduction of wetland vegetation and tree cover along streams and former field borders (Schultz et a!., 1997).</p>
dc.identifier archive/lib.dr.iastate.edu/icm/1998/proceedings/10/
dc.identifier.articleid 1605
dc.identifier.contextkey 11977026
dc.identifier.doi https://doi.org/10.31274/icm-180809-599
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath icm/1998/proceedings/10
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/43509
dc.source.bitstream archive/lib.dr.iastate.edu/icm/1998/proceedings/10/ICM_1998_12.pdf|||Fri Jan 14 18:10:18 UTC 2022
dc.subject.disciplines Agriculture
dc.subject.disciplines Agronomy and Crop Sciences
dc.title Diversity: A Key Element of Sustainable Agricultural Systems
dc.type event
dc.type.genre event
dspace.entity.type Publication
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