scholarly journals Phytophthora and Pythium Spp. From Pine Plantations in South Australia

1973 ◽  
Vol 26 (1) ◽  
pp. 163 ◽  
Author(s):  
EM Davison ◽  
M Bumbieris
Keyword(s):  
Phytophthora Cinnamomi ◽  
South Australia ◽  
Seed Orchard ◽  
Pine Plantations ◽  
Forest Reserve ◽  
Phytophthora Cryptogea

A survey was carried out during the winter of 1971 to determine whether Phytophthora and Pythium spp. are present in South Australian pine plantations. Phytophthora cryptogea was frequently isolated from Kuitpo forest reserve in the Adelaide hills, but Phytophthora cinnamomi was isolated from only one tree in a pine seed orchard.

Oracella acuta (loblolly pine mealybug).

2021 ◽  
Author(s):  
Paris Lambdin
Keyword(s):  
Pinus Taeda ◽  
Loblolly Pine ◽  
Natural Enemies ◽  
Food Source ◽  
Guangdong Province ◽  
Seed Orchard ◽  
Pinus Elliottii ◽  
Slash Pine ◽  
Pine Plantations ◽  
The Usa

Abstract This species has had limited distribution from its native habitats in the southern region of the USA since its discovery and description (Lobdell, 1930). O. acuta appears to be restricted to feeding on species of pines and loblolly pine, Pinus taeda, is its preferred food source. In its native habitat, populations seldom reach pest status due to the presence of natural enemies. In 1988, it was transported to a pine seed orchard in China on slash pine, Pinus elliottii, scions purchased in the USA. Sun et al. (1996) noted that O. acuta-infested slash pine scions leaving the USA and entering China in 1988 were not subjected to the quarantine restrictions of either country. The loblolly pine mealybug quickly became established and rapidly spread throughout pine plantations in the Guangdong Province, China where it threatens both native and introduced species of pines in the region.

Phytophthora cryptogea. [Distribution map].

2013 ◽  
Author(s):  
Keyword(s):  
New York ◽  
South Carolina ◽  
New South ◽  
South Australia ◽  
Distribution Map ◽  
Phytophthora Cryptogea ◽  
Central Russia ◽  
South Wales ◽  
New Distribution ◽  
Distribution In Europe

Abstract A new distribution map is provided for Phytophthora cryptogea Pethybr. & Laff. Chromista: Oomycetes: Peronosporales. Hosts: various. Information is given on the geographical distribution in Europe (Austria, Belgium, Bulgaria, Croatia, Czechoslovakia, France, Germany, Greece, Hungary, Ireland, Italy, Sicily, Macedonia, Netherlands, Norway, Poland, Russia, Central Russia, Serbia, Spain, Sweden, UK, Channel Islands, England and Wales, Northern Ireland, Scotland), Asia (China, Guangdong, Jiangsu, Xinjiang, Yunnan, Iran, Israel, Japan, Jordan, Korea Republic, Pakistan, Taiwan, Turkey), Africa (Egypt, South Africa, Zimbabwe), North America (Canada, Alberta, British Columbia, Ontario, Quebec, Mexico, USA, Arizona, California, Florida, Georgia, Hawaii, Illinois, Kentucky, Maryland, Massachusetts, Michigan, New Hampshire, New Jersey, New York, North Carolina, Ohio, Oklahoma, Oregon, Pennsylvania, South Carolina, Texas, Virginia, Washington, Wisconsin, Wyoming), South America (Argentina, Brazil, Santa Catarina, Chile, Ecuador), Oceania (Australia, New South Wales, Queensland, South Australia, Tasmania, Victoria, Western Australia, New Zealand, Papua New Guinea).

GLAZE DAMAGE IN RED AND SCOTS PINE PLANTATIONS IN SOUTHEASTERN MANITOBA

1961 ◽  
Vol 37 (1) ◽  
pp. 16-21 ◽  
Author(s):  
J. H. Cayford ◽  
R. A. Haig
Keyword(s):  
Scots Pine ◽  
Red Pine ◽  
Pine Plantations ◽  
Ice Storm ◽  
Forest Reserve ◽  
Permanent Damage

In November 1958, an ice storm caused severe bending of stems in young red and Scots pine plantations on the Sandilands Forest Reserve in southeastern Manitoba. A study was carried out to investigate the recovery of bent trees and to determine the extent of permanent damage in the plantations.Between 50 and 100 per cent of the trees in young red pine plantations were bent so severely that their tops were touching the ground. Scots pine plantations were less severely affected. However, both species showed considerable recovery and little or no permanent damage has occurred in plantations younger than 14 or older than 25 years of age. Approximately one quarter of the trees growing in two dense red pine plantations, 16 and 22 years of age, were judged to have been permanently damaged.

Do utility corridors affect movements of small terrestrial fauna?

2009 ◽  
Vol 36 (6) ◽  
pp. 488 ◽  
Author(s):  
Susan M. Carthew ◽  
Briony Horner ◽  
Katherine M. W. Jones
Keyword(s):  
South Australia ◽  
Native Forest ◽  
Vertebrate Species ◽  
Long Distance ◽  
Forest Reserve ◽  
Linear Forest ◽  
Significant Difference ◽  
Future Work ◽  
The Impact ◽  
Bassiana Duperreyi

Linear forest clearings created by utility corridors have the potential to fragment landscapes, create edge effects and isolate populations of plants and animals. Here, we investigated the impact of utility corridors on small terrestrial fauna inhabiting Nangwarry Native Forest Reserve, south of Penola in south-eastern South Australia. Twelve sites straddling linear clearings of two widths (1.5 and 4.2 m) were surveyed over 2 years with 53 traps arranged as five transects at each site. This resulted in a total of 933 captures of 18 vertebrate species, including four amphibians, eight reptiles and six mammals. Propensity for capture near edges v. interiors, distances moved between recaptures and willingness to cross linear clearings varied among species, and was not related to taxa groups. For example, the small skink Bassiana duperreyi was extremely mobile and crossed tracks regularly. At the other extreme, the frog Neobatrachus pictus was more likely to be caught on interior transects and was never recorded moving between captures. The small dasyurid Antechinus flavipes was the most regularly caught species, and made both short- (<50 m) and long-distance (>1500 m) movements, with longer moves made by dispersing juveniles. Movements by this species often involved clearing crossings, although these were more likely when time between recaptures was longer, particularly for females. However, the overall rate of crossings for this species was not different from that expected if movements were random. In conclusion, the relatively narrow utility corridors studied here did not appear to affect the mobility of the majority of vertebrates significantly, with approximately half of the 85 movements recorded being of animals crossing a clearing, and no significant difference between the proportion crossing the wider (4.2 m) and the narrower (1.5 m) clearings. The present study is one of only a handful investigating movement patterns in reptiles and amphibians, particularly in relation to disturbances. However, sample sizes were small for some species, and future work should focus on those species that look to be either particularly mobile or sedentary, and encompass responses to the wider (up to 15 m) permanent tracks in the region.

scholarly journals Phytophthora Root Rot Mortality in Fraser Fir Seedlings

HortScience ◽  
2004 ◽  
Vol 39 (5) ◽  
pp. 1025-1026 ◽  
Author(s):  
John Frampton ◽  
D.M. Benson
Keyword(s):  
Phytophthora Cinnamomi ◽  
Seed Orchard ◽  
Seed Source ◽  
Resistance Testing ◽  
Phytophthora Root Rot ◽  
Fraser Fir ◽  
Seed Sources ◽  
Richards Function ◽  
Genotype Interaction ◽  
Overall Mortality

Seventeen-month-old seedlings from three fraser fir (Abies fraseri [Pursh] Poir.) seed sources (Mount Mitchell, Richland Balsam and Roan Mountain) were inoculated in an outdoor lath house with five genotypes of Phytophthora cinnamomi Rands. After 122 days, overall mortality was 90.5% with significant (p ≤ 0.07) differences among seed sources. The Mount Mitchell source had lower mortality (83.2%) than the Roan Mountain source (95.8%), while the Richland Balsam source (92.5%) was intermediate. Mortality curves were developed using nonlinear regression (Richards' function). Due to a significant seed source × inoculum genotype interaction (p ≤ 0.0001), equations were developed for each combination of seed source and inoculum genotype. Results suggest that while the overall frequency of resistance in fraser fir is low, seed sources differ in their frequency of resistance and that more than one resistance gene may be present. Survivors from this or similar inoculations could be cloned via grafting or rooted cuttings for further resistance testing and/or grafted into a Phytophthora-resistant fraser fir seed orchard.

Bracken fern control for radiata pine plantations in South Australia

1989 ◽  
Vol 52 (1) ◽  
pp. 37-44 ◽  
Author(s):  
Ulla Karjalainen ◽  
David Boomsma
Keyword(s):  
South Australia ◽  
Radiata Pine ◽  
Pine Plantations ◽  
Bracken Fern
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