Effects of Repeated Fertilization on Forest Floor and Mineral Soil Properties in Young Lodgepole Pine and Spruce Forests in Central British Columbia
Effects of Repeated Fertilization on Forest Floor and Mineral Soil Properties in Young Lodgepole Pine and Spruce Forests in Central British Columbia

Author: Robert Peter Brockley

Publisher: University of British Columbia Press

Published: 2009

Total Pages: 64

ISBN-13:

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Experimental Project (EP) 886.13 Maximizing the Productivity of Lodgepole Pine and Spruce in the Interior of British Columbia was implemented by the B.C. Ministry of Forests Research Branch in 1992 to examine the potential to dramatically improve the productivity of interior forests by permanently alleviating nutritional growth constraints. Nine area-based field installations (six pine and three spruce) were established on representative sites within three biogeoclimatic zones between 1992 and 1999. The growth and yield objectives of the "maximum productivity" study are to compare the effects of different regimes and frequencies of repeated fertilization on forest growth and development and to determine optimum fertilization regimes for maximizing stand volume production. In addition, several companion studies have been undertaken at selected sites to determine the long-term effects of large nutrient additions on above- and belowground timber and non-timber forest resources. The purpose of this report is to examine the 12-year effects of repeated fertilization on forest floor and mineral soil properties at two study sites (one pine and one spruce) in central British Columbia.--Document.

Effects of Intensive Fertilization on the Foliar Nutrition and Growth of Young Lodgepole Pine Forests in the British Columbia Interior
Effects of Intensive Fertilization on the Foliar Nutrition and Growth of Young Lodgepole Pine Forests in the British Columbia Interior

Author: Robert Peter Brockley

Publisher:

Published: 2010

Total Pages: 68

ISBN-13:

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Beginning in 1992, the British Columbia Ministry of Forests established a small network of lodgepole pine and interior spruce nutrient optimization research installations on representative sites within three major biogeoclimatic (BEC) zones in the British Columbia Interior. The objectives of the long-term "maximum productivity" study are to (1) compare the effects of different regimes and frequencies of repeated fertilization on the foliar nutrition, growth, and development of young interior forests, and (2) determine the effects of large nutrient additions on above- and below-ground timber and non-timber resources. This report examines the effects of repeated fertilization on foliar nutrition and tree- and stand-level growth and development over 12 years at the five lodgepole pine study sites.--Document.

Advances in Biology and Ecology of Nitrogen Fixation
Advances in Biology and Ecology of Nitrogen Fixation

Author: Takuji Ohyama

Publisher: BoD – Books on Demand

Published: 2014-01-29

Total Pages: 286

ISBN-13: 9535112163

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Biological nitrogen fixation has essential role in N cycle in global ecosystem. Several types of nitrogen fixing bacteria are recognized: the free-living bacteria in soil or water; symbiotic bacteria making root nodules in legumes or non-legumes; associative nitrogen fixing bacteria that resides outside the plant roots and provides fixed nitrogen to the plants; endophytic nitrogen fixing bacteria living in the roots, stems and leaves of plants. In this book there are 11 chapters related to biological nitrogen fixation, regulation of legume-rhizobium symbiosis, and agriculture and ecology of biological nitrogen fixation, including new models for autoregulation of nodulation in legumes, endophytic nitrogen fixation in sugarcane or forest trees, etc. Hopefully, this book will contribute to biological, ecological, and agricultural sciences.