THE EFFECT OF ELEVATED CO2 CONCENTRATION ON GROWTH OF PHLEUM PRATENSE L IN DIFFERENT PARTS OF THE GROWTH SEASON

摘要

Seedlings of Phleum pratense L. (timothy) of the same age were grown in five sequential four-week periods during one growth season (May 5-September 23) at low (380 mu mol mol(-1)) and high (650 mu mol mol(-1)) CO2 concentration. The experiment was performed in 10 9 m(2) field plots surrounded by plastic foil walls (''field chambers'') in the relatively cool climate (10-13 degrees C mean temperature) of the west coast of Norway (59 degrees N latitude).