Download or read book Altitudinal Variation in Eucalyptus Urophylla S T Blake written by Vicente P. G. Moura and published by . This book was released on 1977 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Altitudional Variation in Eucalyptus Urophylla S T Blake written by V. P. G. Moura and published by . This book was released on 1977 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: Eucalyptus urophylla S.T. Blake is a tropical species occurring naturally in a group of islands of the Lesser Sunda Archipelago, beteween 6 and 10 latitude Sourth and between 188 and 128 longitude East. E. urophylla grows in a wide range of soils from almost sea level to 2980 meters in altitude. The climate ranges from hot to cool tropical conditions with a pronounced dry seasson of about three months in the winter. A study was made of genetic variation in E. urophylla taken from an altitudional transect mostly in East Timor with the exception of one seed sample which came from 600m altitude in the nearby island of pantar. The physiological basis of the genetic variation with altitude was examined by growing seedlings fram six altitudes, 600, 1200, 1500, 2100m and 2740m, under controlled conditions. The seeds were found to vary in size with altitude, being larger in the provenances from higher altitudes. Cotyledon size was dependent on seed size and strongly affected the early seedling growth, larger cotyledons resulting in larger seedlings up to four weeks of age. After four weeks the positive relationship of cotyledon size and seedling growth changed, firstly disappearing in the six-week-old seedlings then becaming negative in seedlings at eight weeks of age. The germination of seeds in a range of constant temperature (10 to 40) showed that all provenances germinated equally weel between 20 and 32 C, with an optium around 31C. These was a slightly superior rate of germination of the high altitude provences at the lawest temperature regime. Seedlings grown at four temperatures (12, 20, 25 and 30 C) fram 12 to 22 weeks age showed that all provenances grew best at the two highest temperatures. Howeres, differences were found between provenances with a trend to decreased height and dry weight with increasing altitude. This trend was associated with changes in certain characters. Leaf size and internode length decreased with rise in altitude of seed provenance while leaf thickness increased with altitude. Two conclusions are drawn with regard to field plantations o f E. urophylla in the tropics. The firsts is that seedling selection shoud be delayed until the age at least eight weeks in order to avoid the overriding influence of seed and cotyledon size the early growth of seedlings. The second is that low altitude populations are better adapted to grow in high temperature conditions, but high altitude populations are likely to be more successful in the cool conditions found at high altitudes.
Download or read book Provenance Variation and Progeny Testing of Eucalyptus Urophylla S T blake Grown at Lad Krating Plantation Chachoensao Province written by Mandy Maid and published by . This book was released on 2006 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Eucalyptus Urophylla S T Blake written by Chaw Chaw Sein and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Eucalyptus urophylla S T Blake ecology and silviculture in Vietnam written by Chaw Chaw Sein and published by CIFOR. This book was released on 2011-01-13 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: This manual summarises information on the ecology and silviculture of the species Eucalyptus urophylla S.T. Blake, with an emphasis on Vietnam. It also encompasses growth and yield data from published sources, as well as collected from sites under smallholder industrial plantations in Binh Dinh and Phu Tho provinces, Vietnam. This manual is 1 of 5 that guide smallholder tree planting of five selected tree species in Vietnam. The other four species are: Acacia hybrid, Acacia mangium Willd, Cinnamomum parthenoxylon (Jack) Meisn and Erythrophloeum fordii Oliver.
Download or read book Trial Growth Performance of Eucalyptus Urophylla S T Blake written by Tim Vercoe and published by . This book was released on 1994 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Australian Systematic Botany written by and published by . This book was released on 1995 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Australian Journal of Botany written by and published by . This book was released on 1993 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Australian Forestry written by and published by . This book was released on 1989 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agrindex written by and published by . This book was released on 1995 with total page 1088 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nutrition of Eucalypts written by PM Attiwill and published by CSIRO PUBLISHING. This book was released on 1996-01-01 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most eucalypts grow naturally on soils low in fertility. Commercial plantations of eucalypts have been established around the world over a range of climates and soils. These two themes are central to this book. Nutrition of Eucalypts provides a comprehensive survey of nutritional ecology of eucalypts in their natural environment and in plantations. The authors, who are all at the forefront of research and development in their fields, are from the various eucalypt growing regions including Brazil, India, China, Spain and Australia. Their text aims at a state-of-the-art presentation. The book includes a key and descriptions for recognising nutrient deficiencies in eucalypts.
Download or read book A Study of Altitudinal Variation in Eucalyptus Pauciflora Sieb Ex Spreng written by John William Green and published by . This book was released on 1967 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Journal of Forest Research written by and published by . This book was released on 2011 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Altitudinal Variation in Eucalyptus Regnans written by Kenneth George Eldridge and published by . This book was released on 1969 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study reported in this thesis was made to investigate some of the factors controlling the natural variation and distribution of Eucalyptus regnans F. Muell and to estimate some of its genetic properties.
Download or read book Plant Diversity in Biocultural Landscapes written by Siva Ramamoorthy and published by Springer Nature. This book was released on 2023-06-09 with total page 715 pages. Available in PDF, EPUB and Kindle. Book excerpt: The edited book highlights comprehensive studies on plant diversity dynamics, ecosystem processes, and best conservation practices from the interdisciplinary perspectives such as the botanists, ecologists, conservation biologists, geneticists, cell biologists, molecular biotechnologists, and social scientists. The main focus of the book is to address biodiversity loss and ecosystem collapse amidst the escalating climate change problems, aggravated by anthropogenic activities in biocultural landscapes. The book describes the biocultural landscape of today, ecology of plant diversity, botany of keystone and other rare species of economic and pharmaceutical significance, ecosystem processes, conservation, and emerging frameworks to sustain biocultural landscapes in the Anthropocene. Biocultural landscapes are tracks of land in many parts of the world, shaped by unique human-nature interactions. Many of these landscapes are populated with indigenous peoples with a unique way of life including their interaction with plants and the environment. The relationship between humans and nature in biocultural landscapes used to be harmonious. However, as the human population surges, much pressure has been experienced by the landscape, hence, the loss of biodiversity and degradation of ecosystem services that cascade to agricultural systems. The book is of interest to teachers, professors, policymakers, researchers, and advocates in the fields of botany, ecology, taxonomy, biodiversity conservation, environmental science, molecular biology and genomics, molecular ecology, agriculture, and Agri-tourism, forestry, social science, and climate change professionals. Also, the book serves as a good reference and additional reading material for undergraduate and graduate students.
Download or read book The CABI Encyclopedia of Forest Trees written by CABI and published by CABI. This book was released on 2013 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt: The CABI Encyclopedia of Forest Trees provides an extensive overview of 300 of the world's most important forest trees. Tropical, subtropical, temperate and boreal trees of major economic importance are included, covering tree species used in agroforestry practices around the world. Many of the species covered are considered to be multipurpose trees with uses extending beyond timber alone; the land uses such as watershed protection or provision of windbreaks, and non-wood uses such as the production of medicines, resins, food and forage, are also listed. Comprehensive information is presented on each tree's importance, with a summary of the main characteristics of the species, its potential for agroforestry use and any disadvantages it possesses. The tree's botanical features such as habit, stem form, foliage, inflorescence, flower and fruit characters and phenology are covered in detail with over 70 color plate pictures to aid identification. Also included are specific sections devoted to pests and diseases, distribution and silvicultural characteristics and practices, including seed sowing, nursery care, planting, thinning, and harvesting. In addition to the wealth of information detailed, based on datasheets from CABI's Forestry Compendium, selected references for further reading are provided for each entry, making this book an essential reference work for forestry students, researchers and practitioners.
Download or read book Firewood Crops written by and published by National Academies. This book was released on 1980 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
