caa a22 4500 477111262 CHVBK 20180405111609.0 cr unu---uuuuu 170330e19960201xx s 000 0 eng 10.1007/BF00009324 doi (NATIONALLICENCE)springer-10.1007/BF00009324 Effect of an artificially induced drought on leaf peroxidase activity, mineral nutrition and growth of sugar maple [Elektronische Daten] [Christian Pilon, Benoit Côté, James Fyles] The effect of an artificially induced drought was investigated in an 80-year-old sugar maple (Acer saccharum Marsh.) stand in southern Quebec. We hypothesized that leaf peroxidase activity would increase, and that leaf nutrient deficiencies typical of declining trees (K, Mg) would develop during the year following the imposition of the drought. An impermeable tarpaulin was placed on the ground at the base of the trees during the summer of 1991. Foliage and soils were sampled periodically during the summers of 1991 and 1992. The treated trees showed decreased leaf water potential and increased peroxidase activity over most of the 1991 growing season. Diameter growth was significantly reduced in 1992. Soil NO 3 - and K+ were elevated while Mn2+ was reduced under the tarpaulin treatment at various times during the 1991 growing season. Soil NO 3 - , NH 4 + , K+ and Mg2+ were elevated in the treated plots at various times during the 1992 growing season even though there was a lack of effect on foliar nutrient concentrations over the same period. Drought conditions may have reduced water and nutrient uptake without significantly affecting leaf nutrient status. Kluwer Academic Publishers, 1996 Acer saccharum nationallicence forest decline nationallicence soil fertility nationallicence water stress nationallicence Pilon Christian Department of Natural Resource Sciences, Macdonald Campus of McGill University, 21, 111 Lakeshore, H9X 3V9, Ste-Anne-de-Bellevue, QC, Canada aut Côté Benoit Department of Natural Resource Sciences, Macdonald Campus of McGill University, 21, 111 Lakeshore, H9X 3V9, Ste-Anne-de-Bellevue, QC, Canada aut Fyles James Department of Natural Resource Sciences, Macdonald Campus of McGill University, 21, 111 Lakeshore, H9X 3V9, Ste-Anne-de-Bellevue, QC, Canada aut Plant and Soil Kluwer Academic Publishers 179/2(1996-02-01), 151-158 0032-079X 179:2<151 1996 179 11104 https://doi.org/10.1007/BF00009324 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00009324 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Pilon Christian Department of Natural Resource Sciences, Macdonald Campus of McGill University, 21, 111 Lakeshore, H9X 3V9, Ste-Anne-de-Bellevue, QC, Canada aut NATIONALLICENCE 700 1- Côté Benoit Department of Natural Resource Sciences, Macdonald Campus of McGill University, 21, 111 Lakeshore, H9X 3V9, Ste-Anne-de-Bellevue, QC, Canada aut NATIONALLICENCE 700 1- Fyles James Department of Natural Resource Sciences, Macdonald Campus of McGill University, 21, 111 Lakeshore, H9X 3V9, Ste-Anne-de-Bellevue, QC, Canada aut NATIONALLICENCE 773 0- Plant and Soil Kluwer Academic Publishers 179/2(1996-02-01), 151-158 0032-079X 179:2<151 1996 179 11104 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer