+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Response of thinned immature lodgepole pine to nitrogen and boron fertilization



Response of thinned immature lodgepole pine to nitrogen and boron fertilization



Canadian Journal of Forest Research 20(5): 579-585



A study was undertaken to investigate the effects of nitrogen and boron, applied singly and in combination, on the growth of young, thinned lodgepole pine [Pinus contorta] in the interior of British Columbia, [Canada]. Results indicate that subacute boron deficiencies without visible growth disturbance symptoms, may reduce the nitrogen fertilization response potential of lodepole pine. Combined nitrogen and boron application significantly improved the 3-year mean height and volume increment over the obtained with nitrogen alone. Relatively small boron additions (i.e., 1.5 and 3.0 kg boron .cntdot. ha-1) to the soil surface elevated foliar boron concentrations and maintained them throughut the 3-year study period. No toxic effects of boron application on foliage were observed. Both 1st- year fascicle weight response and 2nd-year branch elongation proved to be reliable indicators of subsequent stem volume response. The slightly larger stem growth response obtained with a complete fertilizer treatment, when combined with needle weight and foliar analysis data, indicates that nitrogen and nitrogen plus boron treatments may have induced a marginal sulphur deficiency. Because boron deficiency symptoms can develop rapidly following an interruption in boron uptake, and because top dieback can have such an adverse effect on stem quality and value, it is recommended that boron be added to nitrogenous fertilizer when undertaking aerial fertilization projects in lodgepole pine forests where average foliar boron concentrations are below 15 ppm.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 007751682

Download citation: RISBibTeXText

DOI: 10.1139/x90-075


Related references

Response of thinned, immature lodgepole pine to nitrogen fertilization: six-year growth response. FRDA Report Victoria, BC 1992; ( 184): vii + 34 pp., 1991

Response of thinned, immature lodgepole pine to nitrogen fertilization: three-year growth response. FRDA Report Victoria, BC ( 036): iv + 37 pp., 1989

Response of thinned lodgepole pine after fertilization. Research Note, Pacific Northwest Forest and Range Experiment Station, USDA Forest Service (PNW-335): 6, 1979

Effects of nitrogen and boron fertilization on foliar boron nutrition and growth in two different lodgepole pine ecosystems. Canadian Journal of Forest Research 33(6): 988-996, 2003

Using foliar variables to predict the response of lodgepole pine to nitrogen and sulphur fertilization. Canadian Journal of Forest Research 30(9): 1389-1399, 2000

Anaerobically mineralizable soil nitrogen as a predictor of growth response to fertilization in lodgepole pine. Canadian Journal of Forest Research 22(6): 915-918, 1992

Evaluation of a mature lodgepole pine stands resistance to the current mountain pine beetle infestation after nitrogen fertilization. Bc Journal Of Ecosystems And Management: 1, 50-53, 2008

Response of thinned ponderosa pine to fertilization. Research Note, Pacific Northwest Forest and Range Experiment Station, USDA Forest Service (PNW-339): 8, 1979

Variation of boron concentration in pine needles from trees growing on mineral soil in Sweden and response to nitrogen fertilization. Communicationes Instituti Forestalis Fenniae (116): 111-115, 1983

Colonization patterns of the mountain pine beetle in thinned and unthinned lodgepole pine stands. Forest science 39(3): 528-545, 1993

Response of ponderosa pine and lodgepole pine to fertilization. Proceedings, Forest Fertilization Conference: 89-94, 1981

Growth response in a douglas fir lodgepole pine stand after thinning of lodgepole pine by the mountain pine beetle a case study. Journal of the Entomological Society of British Columbia 87: 16-21, 1990

Tree wound dynamics in thinned and unthinned stands of grand fir, ponderosa pine, and lodgepole pine in eastern Oregon. Northwest Science 69(4): 276-283, 1995

5 year volume increment from nitrogen fertilization in thinned plantations of pole size loblolly pine. Forest Science 22(1): 85-90, 1976

Response of pole-size Lodgepole Pine to fertilization. USDA Forest Service Research Note, Pacific Northwest Forest and Range Experiment Station (PNW-247): 10, 1975