Bauce E and Allen D C 1991 Etiology of a sugar maple decline. Can. J. For. Res. 21, 686–693.
Beaufils E R 1971 Physiological Diagnosis—A guide for improving maize production based on principles developed for rubber trees. Fert. Soc. S. Afr. J. 1, 1–31.
Beaufils E R 1973 Diagnosis and Recommendation Integrated System (DRIS). A General Scheme for Experimentation and Calibration Based on Principles Developed from Research in Plant Nutrition. Soil Sci. Bul. 1, Univ. of Natal, Pietermaritzburg, South Africa. 132 p.
Bernier B, Paré D and Brazeau M 1989 Natural stresses, nutrient imbalances and forest decline in southeastern Quebec. Water Air Soil Pollut. 48, 239–250.
Bondietti E A, BaesIII C F and McLaughlin S B 1989 Radial trends in cation ratios in tree rings as indicators of the impact of atmospheric deposition on forests. Can. J. For. Res. 19, 586–594.
Camiré C, Hendershot W H and Lachance D 1990 Le Dépérissement des Erablières, Causes et Solutions Possibles. C.R.B.F., Fac for. Géom., Univ. Laval, Québec. 290 p.
Côté B, Hendershot W H and O'Halloran I 1993 Response of sugar maple to seven types of fertilization in southern Quebec: growth and nutrient status. In Forest Decline in the Atlantic and Pacific Region. Eds. R FHuettl and DMueller-Dombois. pp 162–174. Springer-Verlag, Berlin, Heidelberg.
Derome J 1990/91 Effects of forest liming on the nutrient status of podzolic soils in Finland. Water Air Soil Pollut. 54, 337–350.
Ellis R C 1979 Response of crop trees of sugar maple, white ash, and black cherry to fertilization. Can. J. For. Res. 9, 179–188.
Evers F H and Huettl R F 1990/91 A new fertilization strategy in declining forests. Water Air Soil Pollut. 54, 495–508.
Federer C A, Hornbeck J W, Tritton L M Martin C W, Pierce R S and Smith C T 1989a Long-term depletion of calcium and other nutrients in eastern US forests. Env. Manage. 13, 593–601.
Federer C A, Tritton L M, Hornbeck J W and Smith R B 1989b Physiologically based dendroclimate models for effects of weather on red spruce basal-area growth. Agric. For. Meteorol. 46, 159–172.
Foster N W, Hazlett P W, Nicolson J A and Morrison I K 1989 Ion leaching from a sugar maple forest in response to acidic deposition and nitrification. Water Air Soil Pollut. 48, 251–261.
Foster N W, Morrison I K, Yin X and Arp P A 1992 Impact of soil water deficits in a mature sugar maple forest: stand biogeochemistry. Can. J. For. Res. 22, 1753–1760.
Glatzel G 1991 The impact of historic land use and modern forestry on nutrient relations of Central European forest ecosystems. Fert. Res. 27, 1–8.
Haug I and Feger K H 1990/91 Effects of fertilization with MgSO4 and (NH4)2SO4 on soil solution chemistry, mycorrhiza and nutrient content of fine roots in a Norway spruce stands. Water Air Soil Pollut. 54, 453–467.
Hendershot W H 1991 Fertilization of sugar maple showing dieback symptoms in the Quebec Appalachians, Canada. Fert. Res. 27, 63–70.
Hendershot W H and Duquette M 1986 A simple barium chloride for determining cation exchange capacity and exchangeable cations. Soil Sci. Soc. Am. J. 50, 605–608.
Hendershot W H, Fyles J W and Lawrence M 1990 Nutrient availability in FH horizon samples amended with fertilizer and lime. Commun. Soil Sci. Plant Anal. 21, 933–939.
Hendershot W H and Jones A R C 1989 Maple decline in Quebec: a discussion of possible causes and the use of fertilizers to limit damage. For. Chron. 65, 280–287.
Huettl R F 1990 Nutrient supply and fertilizer experiments in view of N saturation. Plant and Soil 128, 45–58.
Huettl R F, Fink S, Lutz H-J, Poth M and Wisniewski J 1990 Forest decline, nutrient supply and diagnostic fertilization in Southwestern Germany and in Southern California. For. Ecol. Manage. 30, 341–350.
Jones A R C 1990 A comparison of the state of decline of European and Eastern North American forests. In Le Dépérissement des Érablières, Causes et Solutions Possibles. Eds. CCamiré, W HHendershot and DLachance, C.R.B.F., Fac for. Géom., Univ. Laval, Québec. 290 p.
Keeney D R and Nelson D W 1982 Nitrogen inorganic forms. In Methods of Soil Analysis-Part 2. Chemical and Microbiological Properties (2nd edition). Eds. A LPage R HMiller and D RKeeney. Agron. 9 ASA-SSSA Madison, Wisconsin.
Kozlowski T T, Kramer P J and Pallardy S G 1991 The Physiological Ecology of Woody Plants. Ed. H AMooney. pp 248–302. Academic Press Inc., San Diego, California.
Lozano F C and Huynh K D 1989 Foliar diagnosis of sugar maple decline by DRIS. Commun. Soil Sci. Plant Anal. 20, 1895–1914.
Millers I, Allen D C and Lachance D 1992 Sugar maple crown conditions improved between 1988 and 1990. U.S. Forest Serv. and Forestry Canada, NA-TP-03-92.
Raison R J, Khanna P K, Connell M J and Falkiner R A 1990 Effects of water availability and fertilization on nitrogen cycling in a stand of Pinus radiata. For. Ecol. Manage. 30, 31–43.
Rehfuess K E 1989 Acidic deposition-Extent and impact on forest soils, nutrition, growth and disease phenomena in Central Europe: a review. Water Air Soil Pollut. 48, 1–20.
S.A.S. Institute Inc. 1985 SAS User's Guide: Statistics. Version 5 edition. Cary, NC. 956 p.
Schneider B U and Zech W 1990/91 The influence of Mg fertilization on growth and mineral contents of fine roots in (Picea abies [Karst.] L.) stands at different stages of decline in NE-Bavaria. Water Air Soil Pollut. 54, 469–476.
Schulze E-D 1991 Water and nutrient interactions with plant water stress. In Response of Plants to Multiple Stresses. Eds. H AMooney, W EWinner and E JPell. pp 89–101. Academic Press, San Diego, California.
Sheldrick B H 1984 LRRI contribution no. 84–30, Res. Branch, Agric. Canada
Shipley B, Lechowicz M, Dumont S and Hendershot W H 1992 Interacting effects of nutrients, pH-Al and elevated CO2 on the growth of red spruce (Picea rubens Sarg.) seedlings. Water Air Soil Pollut. 64, 585–600.
Stanturf J A, StoneJr E L and McKittrick R C 1989 Effects of added nitrogen on growth of hardwood trees in southern New York. Can. J. For. Res. 19, 279–284.
Thomas R L, Sheard R W and Moyer J R 1967 Comparison of conventional and automated procedures for nitrogen, phosphorus and potassium analysis of plant material using single digestion. Agron. J. 59, 240–243.
Tomlinson G H 1990 Hypotheses advanced to explain forest death. In Effects of Acid Deposition on the Forests of Europe and North America. Ed. G HTomlinson. pp 11–49. CRC Press, Boca Raton.
Tomlinson G H 1990/91 Nutrient disturbances in forest trees and the nature of the forest decline in Quebec and Germany. Water Air Soil Pollut. 54, 61–74.
Tveite B, Abrahamsen G and Stuanes A O 1990/91 Liming and wet acid deposition effects on tree growth and nutrition: experimental results. Water Air Soil Pollut. 54, 409–422.
Ulrich B 1980 Die Ealder in Mitteleuropa: Messergebnisse ihrer Umweltbelastung, Theorie ihrer Gefahrdung, Prognose ihrer Entwicklung. Allg. Forstz. 35, 1198–2202.
Zoettl H W, Huettl R F, Fink S, Tomlinson G H and Wisniewski J 1989 Nutritional disturbances and histological changes in declining forests. Water Air Soil Pollut. 48, 87–109.