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1 November 2001 Competition between Canada thistle and winter wheat
A. P. Mamolos, K. L. Kalburtji
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Abstract

This study was conducted to determine the effect of Canada thistle density and the direct and indirect effects of Canada thistle aboveground biomass and N concentration on wheat yield. A 4-yr experiment (1991–1995) with four Canada thistle densities (0, 4, 16, 64 plants m−2) was conducted. Initial statistical analysis showed a significant effect of Canada thistle density on wheat yield. Multiple regression and path analysis showed that the main factor causing wheat yield loss was Canada thistle N concentration. The second factor affecting wheat yield was Canada thistle biomass, and the last was Canada thistle density.

Nomenclature: Canada thistle, Cirsium arvense (L.) Scop. CIRAR; winter wheat, Triticum aestivum (L.) Em. Tell. ‘Yecora’.

A. P. Mamolos and K. L. Kalburtji "Competition between Canada thistle and winter wheat," Weed Science 49(6), 755-759, (1 November 2001). https://doi.org/10.1614/0043-1745(2001)049[0755:CBCTAW]2.0.CO;2
Received: 9 December 1999; Accepted: 19 June 2001; Published: 1 November 2001
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