Table 4: Field 2: stepwise regression relating peak biomass to the weighted (by biomass) plant parameters associated with the various species composition treatments. See Table 2 for further details.

N treatment ( 𝑟 2 = 0 . 4 5 , 𝑃 < . 0 0 0 1 )P and Non fertilized treatment ( 𝑟 2 = 0 . 4 5 , 𝑃 < . 0 0 0 1 )
VariablesCoefficientSEPVariablesCoefficientSEP

RGR752.61173.43.0001RGR671.8675.20.0001
Imax-N297.71127.44.0205ρ194.5437.10.0001
β−1028.0982.49.0001Imax-N167.0361.76.0071
τ−417.75110.59.0002NUE−696.99124.10.0001
τ−555.3770.25.0001
β−523.4743.72.0001
R : S−187.2139.71.0001