Drought sensitivity of red spruce seedlings affected by precipitation chemistry. [Picea rubens]
Conference
·
OSTI ID:5686879
Red spruce seedlings that had been exposed to a combination of simulated rain of pH 4.1 and mist of pH 3.6 were more severely affected by a drought regime than were seedlings treated with rain and mist of pH 5.1. The increased drought susceptibility, which was manifested in lower xylem water potentials and a greater reduction in photosynthesis, was not a result of altered physiological resistance, but was an indirect effect of a stimulation of needle growth by nitrogen fertilization, which increased plant water use and the severity of the drought.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 5686879
- Report Number(s):
- CONF-8606147-1; ON: DE86012231
- Country of Publication:
- United States
- Language:
- English
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