Using foliar variables to predict the response of lodgepole pine to nitrogen and sulphur fertilization

被引:22
作者
Brockley, RP [1 ]
机构
[1] BC Minist Forests, Kalamalka Forestry Ctr, Venon, BC V1B 2C7, Canada
关键词
D O I
10.1139/x00-066
中图分类号
S7 [林业];
学科分类号
0829 ; 0907 ;
摘要
Six-year basal area responses to nitrogen (N) fertilizer, alone and in combination with sulphur (S), in 31 lodgepole pine (Pinus contorta Dougl. var. latifolia Engelm.) stands in the interior of British Columbia were compared with pre-treatment measures of foliar N and S and first-year increases in fascicle mass to determine the utility of these variables for predicting growth response and for determining appropriate fertilizer prescriptions. Results indicate that pre-fertilization levels of foliar N or inorganic sulphate-S (SO4) may be more reliable than the fascicle mass screening method for predicting whether or not a significant stemwood response will occur following N fertilization. When combined, N and SO4 levels in unfertilized foliage explained 68% of the variation in relative basal area response to fertilization with N alone. Foliar nutrients were also useful for determining whether or not lodgepole pine would respond incrementally to S when added in combination with N. Stands in which pre-fertilization foliar SO4 was less than or equal to 60 mg/kg and N/S ratio was greater than or equal to 13 did not respond significantly to N alone but always responded significantly to N + S. Conversely, a foliar SO4 level > 60 mg/kg combined with a N/S ratio of less than or equal to 12 always resulted in a favourable response to N with no incremental benefit of added S.
引用
收藏
页码:1389 / 1399
页数:11
相关论文
共 39 条
[21]   RELATIONSHIP BETWEEN SULFUR AND NITROGEN IN FOLIAGE OF PINUS-RADIATA [J].
KELLY, J ;
LAMBERT, MJ .
PLANT AND SOIL, 1972, 37 (02) :395-+
[22]  
MIKA PG, 1992, U WASH I FOR RESOUR, V73, P127
[23]   WET OXIDATION PROCEDURE SUITABLE FOR DETERMINATION OF NITROGEN AND MINERAL NUTRIENTS IN BIOLOGICAL-MATERIAL [J].
PARKINSON, JA ;
ALLEN, SE .
COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS, 1975, 6 (01) :1-11
[24]   GROWTH-RESPONSE AND RECOVERY OF N-15-FERTILIZER ONE AND 8 GROWING SEASONS AFTER APPLICATION TO LODGEPOLE PINE IN BRITISH-COLUMBIA [J].
PRESTON, CM ;
MEAD, DJ .
FOREST ECOLOGY AND MANAGEMENT, 1994, 65 (2-3) :219-229
[25]   SULFUR-CONTENT OF PLANT-MATERIAL - A COMPARISON OF METHODS OF OXIDATION PRIOR TO DETERMINATION [J].
RANDALL, PJ ;
SPENCER, K .
COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS, 1980, 11 (03) :257-266
[26]   DETERMINATION OF INORGANIC SULFATE IN FOLIAGE WITH BARIUM CHLORANILATE [J].
RICHTER, DD ;
JOHNSON, DW .
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1983, 47 (03) :522-524
[27]   Stem-growth response of Pinus sylvestris and Picea abies to nitrogen fertilization as related to needle nitrogen concentration [J].
Sikstrom, U ;
Nohrstedt, HO ;
Pettersson, F ;
Jacobson, S .
TREES-STRUCTURE AND FUNCTION, 1998, 12 (04) :208-214
[28]  
*SPSS INC, 1997, SIGM US MAN VERS 4 0
[29]  
Timmer V. R., 1984, Forest soils and treatment impacts. Proceedings, Sixth North American Forest Soils Conference, University of Tennessee, Knoxville, June 1983, P335
[30]   COMPARATIVE FOLIAR ANALYSIS OF YOUNG BALSAM FIR FERTILIZED WITH NITROGEN, PHOSPHORUS, POTASSIUM, AND LIME [J].
TIMMER, VR ;
STONE, EL .
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1978, 42 (01) :125-130