Angonin, C., Caussanel, J. P., and Meynard, J. M.
1996. Competition between winter wheat and Veronica hederiifolia: influence of weed density and the amount and timing of nitrogen application. Weed Res.
Appleby, A. P., Olson, P. O., and Colbert, D. R.
1976. Winter wheat yield reduction from interference by Italian ryegrass. Agron. J.
Auld, B. A., Kemp, D. R., and Medd, R. W.
1983. The influence of spatial arrangement on the grain yield of wheat. Aust. J. Agric. Res.
Austin, M. P.
1982. Use of a relative physiological performance value in the prediction of performance in multispecies mixtures from monocultures performance. J. Appl. Ecol.
Barbour, M. G., Burk, J. H., and Pitts, W. D.
1987. Pages 198–204 in Terrestrial Plant Ecology. Menlo Park, CA: Benjamin/Cummings.
Burrill, L. C., Braunworth, W. S. Jr., William, R. D., Parker, R. R., Swan, D. G., and Kidder, D. W.
1988. Pages 29–48 in Pacific Northwest Handbook. Corvallis, OR: Oregon State University.
Concannon, J. A.
1987. The Effects of Density and Proportion of Spring Wheat and Lolium multiflorum Lam. . Oregon State University, Corvallis, OR. 101 p.
Cripps, J.E.L., Melville, F., and Nicol, H. I.
1975. The relationships of granny apple tree growth and early cropping to planting density and rectangularity. J. Hortic. Sci.
1973. Dummy variables and some of their uses in regression analysis. Pages 1–146
Cunia, T. et al., eds. Proceeding of IUFRO Meeting. France. June 25–29, 1973.
Doli, H., Holm, O., and Sogaard, B.
1994. Effect of crop density on competition by wheat and barley with Agrostemma githago and other weeds. Weed Res.
Fischer, R. A. and Miles, R. E.
1973. The role of spatial pattern in the competition between crop plants and weeds. A theoretical analysis. Math. Biosci.
Gaudit, G. L. and Keddy, P. A.
1988. A comparative approach to predicting competitive ability from plant traits. Nature
Ghersa, C. M. and Martinez Ghersa, M. A.
1991. A field method for predicting yield losses in maize caused by johnsongrass (Sorghum halepense). Weed Technol.
Goodall, W. D.
1957. Some consideration in the use of point quadrat methods for the analysis of vegetation. Aust. J. Biol. Sci.
Grace, J. B.
1990. On the relationships between plant traits and competitive ability. Pages 51–65
Grace, J. B. and Tilman, D. T., eds. Perspective on Plant Competition. New York: Academic Press.
Hashem, A., Radosevich, S. R., and Roush, M. L.
1994. Morphology and growth of winter wheat as affected by competition from Italian ryegrass (Lolium multiflorum Lam). Ann. Bangladesh Agric.
1963. The effect of row width on the yield of cereals. Field Crop Abstr.
1985. Crop loss in wheat (Triticum aestivum) as determined using weeded and non-weeded quadrats. Weed Sci.
Huxley, P. A.
1963. Considerations when experimenting with changes in plant spacing. Working paper # 15. ICRAF, P.O. Box 30677, Nairobi.
Kropff, M. J.
1988. Modeling the effects of weeds on crop production. Weed Res.
Kropff, M. J. and Spitters, C.J.T.
1991. A simple model of crop loss by weed competition from early observations on relative leaf area of the weeds. Weed Res.
Loomis, R. S. and Williams, W. A.
1969. Productivity and morphology of crop stands: pattern with leaves. in
Eastin, J. D. et al., eds. Physiological Aspects of Crop Yield. Madison, WI: ASA and CSA.
Martin, R. J., Cullis, J. B., and McNamara, D. W.
1987. Prediction of wheat yield loss due to competition by wild oats (Avenu spp.). Aust. J. Agric. Res. 38: 487–499.
Medd, R. W., Auld, B. A., Kemp, D. R., and Musisom, R. D.
1985. The influence of wheat density and spatial arrangements on annual ryegrass, Lolium rigidum, competition. Aust. J. Agric. Res.
Monsi, M. and Saeki, T.
1953. Uber den Lichtfaktor in den Pflanzengesllshaften und seine beduetung fur die Stoffproduktion. Jap. J. Bot.
Radford, B. J., Wilson, B. J., Cartiledge, O., and Watkins, F. B.
1980. Effect of wheat seeding rate on wild oat competition. Aust. J. Exp. Agric. Anim. Husb.
Radosevich, S. R.
1987. Methods to study interaction among crops and weed. Weed Technol.
Radosevich, S. R.
1988. Methods to study crop and weed interaction. Pages 121–143
Alteiri, M. A. and Liebman, M., eds. Weed Management in Agroecosystems: Ecological Approaches. Boca Raton, FL: CRC Press.
Roush, M. L.
1988. Models of a Four-Species Annual Weed Community Dynamics. . Oregon State University, Corvallis, OR. 217 p.
[SAS] Statistical Analysis Systems. 1987. SAS/STAT Guide for Personal Computers. Version 6. Cary, NC: Statistical Analysis Systems Institute.
Shainsky, L. J.
1988. Competitive Interactions Between Douglas-fir and Red Alder Seedling: Growth Analysis, Resource Use, and Physiology. . Oregon State University, Corvallis, OR. 221 p.
1983. An alternative approach to the analysis of mixed cropping experiment. I. Estimation of competition effects. Neth. J. Agric. Sci.
Stern, W. R. and Donald, C. M.
1962. The influence of leaf area and radiation on the growth of clover swards. Aust. J. Agric. Sci.
Vitta, J. I. and Quintanilla, C. F.
1996. Canopy measurements as predictors of weed-crop competition. Weed Sci.
Watkinson, A. R.
1981. Interference in pure and mixed population of Agrostemma githago
. J. Appl. Ecol.
Wilson, B. J. and Wright, K. J.
1990. Predicting the growth and competitive effects of annual weeds in wheat. Weed Res.
Wilson, B. J., Wright, K. J., Brain, P., Clements, M., and Stephens, E.
1995. Predicting the competitive effects of weed and crop density on weed biomass, weed seed production and crop yield in wheat. Weed Res.