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To test the hypothesis that elevated atmospheric CO 2 and elevated temperature, simulating current and predicted future growing season conditions, act antagonistically on phosphorus acquisition of ponderosa pine, seedlings were grown in controlled-environment chambers in a two temperature (25/10 °C and 30/15 °C)×two CO 2 (350 and 700 μl −1 ) experimental design. Mycorrhizal...
The effects of raised temperature and extended photoperiod on the dehardening of quiescent and winter-hardy Scots pine saplings were examined in an open-top-chamber experiment. The saplings were exposed during winter to natural, square-curve fluctuating (between 1 and 11 °C with a 14 d interval), and constant (6 °C) temperatures with a natural and an extended (17 h) photoperiod. Frost hardiness of...
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