Enhancing the competitive ability of crops - Ecological Management of Agricultural Weeds - page 275

Figure 6.2 Biomass ofcrop and weed in response to their combined density
( N C

N W ) when the crop and weed are highly similar.(a) The model,with N W fixed
at an arbitrary value.( b) An example using barley as both crop and weed,with N W
fixed at 50,200,and 400 plants m 2 , a 0.61 and b 0.00293.(Redrawn from

Håkansson,1983.)