Bouteluoa gracilis plants. Net photosynthetic rates of Bouteloua gracilis plants. The open symbols and the dashed line correspond to defoliated plants. The closed symbols and the full line correspond to control plants. Treatments were applied 40 days after germination.
Bars indicate standard errors.
From Detling et al. 1979 . Effect of defoliation on the rate of NO 3 - uptake of a simulated sward of Lolium perenne grown on flowing nutrient solution under artificial light with a photoperiod of 9 hours. The defoliation treatment was applied 60 days after sowing. The plants were defoliated at 5 cm above the base of the shoots 3 hours after the start of the photoperiod. From Clement et al. 1978 .