LA MESURE DE L’INTERFÉRENCE DU CHIENDENT DANS L’ORGE
- 1 January 1982
- journal article
- research article
- Published by Canadian Science Publishing in Canadian Journal of Plant Science
- Vol. 62 (1) , 183-188
- https://doi.org/10.4141/cjps82-025
Abstract
Barley (Hordeum vulgare L. ’Champlain’) was grown with quackgrass (Agropyron repens (L.) Beauv.) at various densities for 3 yr. According to the regression analysis, a linear relation is appropriate to describe the relationship between yield of barley and biomass or density of quackgrass. A greater proportion of yield variability was explained by density (64%) than by biomass (40%). Density is then a better criterion than biomass to predict yield lost in barley. The linear relationship between barley yield and the shoot density of quackgrass is estimated by the following equation: yield barley = 345.3–0.5682 dens, quackgrass. An increase of 10 shoots/m2 in the mean density of quackgrass resulted in a mean loss of 6 g/m2 in the yield of barley.This publication has 1 reference indexed in Scilit:
- THE BIOLOGY OF CANADIAN WEEDS. 24. AGROPYRON REPENS (L.) BEAUV.Canadian Journal of Plant Science, 1977