scholarly journals Coarse root growth of Veronese poplar trees varies with position on an erodible slope in New Zealand

2009 ◽  
pp. 251-264
Author(s):  
I. R. McIvor ◽  
G. B. Douglas ◽  
R. Benavides
Keyword(s):  
New Zealand ◽  
Root Growth ◽  
Coarse Root ◽  
Poplar Trees

scholarly journals Coarse root growth of Veronese poplar trees varies with position on an erodible slope in New Zealand

2009 ◽  
Vol 76 (1) ◽  
pp. 251-264 ◽  
Author(s):  
I. R. McIvor ◽  
G. B. Douglas ◽  
R. Benavides
Keyword(s):  
New Zealand ◽  
Root Growth ◽  
Coarse Root ◽  
Poplar Trees

Valsa sordida. [Descriptions of Fungi and Bacteria].

1998 ◽  
Author(s):  
V. P. Hayova
Keyword(s):  
Czech Republic ◽  
New Zealand ◽  
North America ◽  
South America ◽  
Environmental Stress ◽  
Geographical Distribution ◽  
Plant Diseases ◽  
Republic Of Georgia ◽  
Distribution Maps ◽  
Poplar Trees

Abstract A description is provided for Valsa sordida. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASE: Valsa sordida is usually associated with Valsa canker of poplar twigs. Wounded trees, and trees injured by insects or attacked by other pathogens are more susceptible to infection. Development of Valsa canker is affected by environmental stress (Guyon, 1996; Tao et al., 1984). Poplar canker caused by V. sordida has been studied in different countries (CMI Distribution Maps of Plant Diseases, 1977; Worrall, 1983; Wang et al., 1981) The fungus can be often found in declining poplar stands together with another pathogen of poplar trees, Leucostoma niveum. Valsa sordida may also cause necrosis of willow twigs. HOSTS: Populus spp., Salix spp. and, more rarely, other woody angiosperms. GEOGRAPHICAL DISTRIBUTION: Africa: Morocco. Asia: Armenia, Azerbaijan, China, Republic of Georgia, India, Iran, Iraq, Israel, Japan. Kazakhstan, Korea, Russia (Tatarstan), Turkey, Turkmenia, Uzbekistan. Australasia: Australia (Victoria), New Zealand. Europe: Austria, Belgium, Bulgaria, Czech Republic, Denmark, Estonia, France, Germany, Greece, Ireland, Italy, Netherlands, Norway, Poland, Portugal, Rumania, Russia, Slovakia, Sweden, Switzerland, UK, Ukraine, former Yugoslavia. North America: Canada (Alberta, British Columbia, Nova Scotia, Ontario, Québec, Saskatchewan). USA (California, Colorado, Michigan, Minnesota). South America: Chile. TRANSMISSION: Both conidia and ascospores are air-borne, especially under humid conditions. Yellow or orange exudation of conidia from conidiomata can be often seen after rain.

Structural root growth of young Veronese poplars on erodible slopes in the southern North Island, New Zealand

2007 ◽  
Vol 72 (1) ◽  
pp. 75-86 ◽  
Author(s):  
I. R. McIvor ◽  
G. B. Douglas ◽  
S. E. Hurst ◽  
Z. Hussain ◽  
A. G. Foote
Keyword(s):  
New Zealand ◽  
Root Growth

GROWTH AND REPRODUCTION OF NEW ZEALAND, MEDITERRANEAN, AND HYBRID DACTYLIS GLOMERATA AFTER SHORT DAY AND TEMPERATURE TREATMENTS

1966 ◽  
Vol 46 (3) ◽  
pp. 233-241 ◽  
Author(s):  
S. O. Fejer
Keyword(s):  
New Zealand ◽  
Root Growth ◽  
Untreated Control ◽  
Floral Induction ◽  
Dactylis Glomerata ◽  
Control Material ◽  
Reciprocal Differences ◽  
Dactylis Glomerata L ◽  
Short Days ◽  
Growth And Reproduction

Floral induction was studied in New Zealand and Mediterranean varieties of Dactylis glomerata L. and their hybrids. Treatments of 1 month vernalization, or 1 month of cold short days, or 2 months of warm short days, when followed by long days, induced almost complete heading in the field for most materials. Early dates of heading, many fertile tillers of increased height, and heads of a large and branched type also were induced by these treatments as compared with the untreated control material. Certain cold treatments produced, at early vegetative stages, more growth than the control. It is inferred that earlier attempts to vernalize New Zealand Dactylis plants were unsuccessful because of the restricted root growth in pots and flats. Plant breeding implications concerning heterosis, genotype–environment interactions, and reciprocal differences in hybrids were discussed.

scholarly journals Farmer experience with tree fodder

2003 ◽  
Vol 10 ◽  
pp. 7-15
Author(s):  
J.F.L. Charlton ◽  
G.B. Douglas ◽  
B.J. Wills ◽  
J.E. Prebble
Keyword(s):  
New Zealand ◽  
Soil Conservation ◽  
Leaf Fall ◽  
Poplar Trees ◽  
Tree Fodder ◽  
Practical Guidelines ◽  
Livestock Farmers ◽  
Natural Leaf ◽  
Supplementary Feed ◽  
Grazing Livestock

Use of trees for drought feed on New Zealand farms has been practised sporadically for many years, after farmers found that tree prunings were useful as supplementary feed during summer droughts. The Ministry of Agriculture & Forestry (MAF) Sustainable Farming Fund recently funded a farmer-led team to develop the concept of tree fodder use on livestock farms in the southern North Island. Livestock farmers in Hawke's Bay, Rangitikei and Wairarapa who are already using tree fodder were interviewed to generate practical guidelines from their experience. Additional experience from Otago has been included here. Farmers obtain tree fodder by pruning and pollarding soil conservation trees, and by coppicing or grazing livestock on fodder blocks, or by taking advantage of natural leaf fall from poplar trees. The most common practice was pruning willows and poplars originally planted for soil conservation, during summer using a chainsaw. Most farmers found tree fodder feeding a valuable practice and well worthwhile. Over a three-tofour week period, two farmers reported taking 1.5-2 hours per day to feed 1,000 sheep, or cutting five or six trees per day to feed approximately 1,000 ewes. Keywords: tree fodder; poplars; willows; coppicing; pruning.

Magellanic Cloud Eclipsing Binaries: Primary Distance Indicators

1999 ◽  
Vol 190 ◽  
pp. 563-566
Author(s):  
J. D. Pritchard ◽  
W. Tobin ◽  
J. V. Clausen ◽  
E. F. Guinan ◽  
E. L. Fitzpatrick ◽  
...  
Keyword(s):  
New Zealand ◽  
Magellanic Cloud ◽  
Eclipsing Binaries ◽  
Fundamental Parameters ◽  
Distance Indicators

Our collaboration involves groups in Denmark, the U.S.A. Spain and of course New Zealand. Combining ground-based and satellite (IUEandHST) observations we aim to determine accurate and precise stellar fundamental parameters for the components of Magellanic Cloud Eclipsing Binaries as well as the distances to these systems and hence the parent galaxies themselves. This poster presents our latest progress.

Heat-Etching with a Bullivant Type II Simple Freeze-Cleave Device

1970 ◽  
Vol 28 ◽  
pp. 106-107 ◽  
Author(s):  
Ronald S. Weinstein ◽  
N. Scott McNutt
Keyword(s):  
New Zealand ◽  
General Hospital ◽  
Massachusetts General Hospital ◽  
Type I ◽  
Type Ii ◽  
Collaborative Effort ◽  
Temperature And Pressure ◽  
The University

The Type I simple cold block device was described by Bullivant and Ames in 1966 and represented the product of the first successful effort to simplify the equipment required to do sophisticated freeze-cleave techniques. Bullivant, Weinstein and Someda described the Type II device which is a modification of the Type I device and was developed as a collaborative effort at the Massachusetts General Hospital and the University of Auckland, New Zealand. The modifications reduced specimen contamination and provided controlled specimen warming for heat-etching of fracture faces. We have now tested the Mass. General Hospital version of the Type II device (called the “Type II-MGH device”) on a wide variety of biological specimens and have established temperature and pressure curves for routine heat-etching with the device.

A Cytochemical Study of Glucose-6-Phosphatase (G-6-PASE) in Cells Participating in Atherogenesis of Rabbit Aorta

1975 ◽  
Vol 33 ◽  
pp. 460-461
Author(s):  
Sidney D. Kobernick ◽  
Edna A. Elfont ◽  
Neddra L. Brooks
Keyword(s):  
Lipid Metabolism ◽  
New Zealand ◽  
Aortic Wall ◽  
Rabbit Aorta ◽  
Plaque Formation ◽  
Metabolic Changes ◽  
Atherosclerotic Plaques ◽  
Cytochemical Study ◽  
Cellular Alteration ◽  
New Zealand White Rabbits

This cytochemical study was designed to investigate early metabolic changes in the aortic wall that might lead to or accompany development of atherosclerotic plaques in rabbits. The hypothesis that the primary cellular alteration leading to plaque formation might be due to changes in either carbohydrate or lipid metabolism led to histochemical studies that showed elevation of G-6-Pase in atherosclerotic plaques of rabbit aorta. This observation initiated the present investigation to determine how early in plaque formation and in which cells this change could be observed.Male New Zealand white rabbits of approximately 2000 kg consumed normal diets or diets containing 0.25 or 1.0 gm of cholesterol per day for 10, 50 and 90 days. Aortas were injected jin situ with glutaraldehyde fixative and dissected out. The plaques were identified, isolated, minced and fixed for not more than 10 minutes. Incubation and postfixation proceeded as described by Leskes and co-workers.

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