scholarly journals Susceptibility of apple cultivars to collar rot (Phytophthora cactorum Leb. et Cohn. Schroet.)

2013 ◽  
Vol 39 (1) ◽  
pp. 5-13
Author(s):  
Zbigniew Borecki
Keyword(s):  
Laboratory Test ◽  
Field Experiment ◽  
Apple Tree ◽  
Phytophthora Cactorum ◽  
Collar Rot ◽  
Dormant Stage ◽  
Methods Of Evaluation ◽  
Apple Cultivars ◽  
End Stage ◽  
High Degree

The susceptibility of 16 apple cultivars to collar rot caused by the fungus <i>Phytophthora cactorum</i> was tested. Three methods of evaluation were applied: a laboratory test, a greenhouse experiment and a field experiment. Two cultivars were very sensitive: 'Discovery' and 'Hibernal'. The next susceptibility group comprised the cultivars: 'Gloster', 'Florina', 'Liberty', 'Julyred', 'Paulared' and 'Jonnee'. Moderately susceptible were: 'Šampion', 'Nova Easygro', 'Jonagold' and 'Quinte'. Least susceptible were: 'Summerred', 'Nüred', 'Jonamac' and 'Spartan'. Not one of the tested cultivars was completely resistant to infection with <i>Phytophthora cactorum</i>. A high degree of correlation was noted between the results obtained in the greenhouse, in the field and in the laboratory test on annual shoots cut off at the dormant stage of the trees. Much less reliable results were obtained in the laboratory test on apple-tree shoots cut in September in the end stage of vegetation of the trees.

Spatial Variability of Contaminant Transport in a Fractured Till, Avedøre Denmark

1999 ◽  
Vol 30 (4-5) ◽  
pp. 333-360 ◽  
Author(s):  
Larry McKay ◽  
Johnny Fredericia ◽  
Melissa Lenczewski ◽  
Jørn Morthorst ◽  
Knud Erik S. Klint
Keyword(s):  
Hydraulic Conductivity ◽  
Spatial Variability ◽  
Field Experiment ◽  
Contaminant Transport ◽  
Tracer Test ◽  
Conductivity Measurements ◽  
Fine Grained ◽  
Downward Migration ◽  
Rapid Transport ◽  
High Degree

A field experiment shows that rapid downward migration of solutes and microorganisms can occur in a fractured till. A solute tracer, chloride, and a bacteriophage tracer, PRD-1, were added to groundwater and allowed to infiltrate downwards over a 4 × 4 m area. Chloride was detected in horizontal filters at 2.0 m depth within 3-40 days of the start of the tracer test, and PRD-1 was detected in the same filters within 0.27 - 27 days. At 2.8 m depth chloride appeared in all the filters, but PRD-1 appeared in only about one-third of the filters. At 4.0 m depth chloride appeared in about one-third of the filters and trace amounts of PRD-1 were detected in only 2 of the 36 filters. Transport rates and peak tracer concentrations decreased with depth, but at each depth there was a high degree of variability. The transport data is generally consistent with expectations based on hydraulic conductivity measurements and on the observed density of fractures and biopores, both of which decrease with depth. Transport of chloride was apparently retarded by diffusion into the fine-grained matrix between fractures, but the rapid transport of PRD-1, with little dispersion, indicates that it was transported mainly through the fractures.

A PROSPECTS OF THE SUPER-INTENSIVE UNSUPPORTED GARDENS ESTABLISHMENT OF COLUMNAR APPLE TREE VARIETIES

1970 ◽  
pp. 45-48
Author(s):  
S. А. Korneeva ◽  
Е. N. Sedov ◽  
T. V. Янчук
Keyword(s):  
Economic Efficiency ◽  
Apple Tree ◽  
Maximum Yield ◽  
Biological Features ◽  
Apple Cultivars ◽  
High Level ◽  
Dwarf Rootstocks

Columnar apple cultivars are optimally suited to lay apple tree plantings using intensive technology, which provides for super-dense placement of trees. The article considers a variant of growing columnar apple cultivars on inserts of dwarf rootstocks 3-17-38 and 62-396. The use of dwarf rootstocks 3-17-38 and 62-396 as intercalar inserts in the cultivation of columnar apple cultivars, along with good anchoring of plants, provides high precocity, productivity and economic efficiency of planting. All the costs of laying the orchard and annual works on agrotechnical care of the trees were paid off in the fourth year after planting.The economic and biological features of the columnar cultivars provided not only a quick return of the investments, but also a high level of profitability. The profitability of the studied columnar planting for the 6th year after planting (2020) on average for all cultivars was 106.0 % on the insert of the dwarf rootstock 62-396 and 104.7 % on the insert 3-17-38. The profit received on average for the plantings amounted to 2 378 661 rubles per ha. In the group of the studied cultivars, there is a difference in economic efficiency. The lowest level of productivity and profitability was in the Vostorg cultivar: on average, on two inserts, the yield in 2020 was 27.3 t/ha and the profitability was 66.6%. The Girlyanda cultivar was characterized by the maximum yield and profitability: 88.0 t/ha and 115.8%, respectively.

scholarly journals Use of the Microdebrider in the Surgical Management of Rhinophyma

2018 ◽  
Vol 97 (1-2) ◽  
pp. E42-E45
Author(s):  
Winsion Chow ◽  
Goran Jeremic ◽  
Leigh Sowerby
Keyword(s):  
Ease Of Use ◽  
Sebaceous Glands ◽  
Connective Tissues ◽  
Revolution Speed ◽  
Surgical Tool ◽  
Acne Rosacea ◽  
End Stage ◽  
High Degree ◽  
Superficial Tissue ◽  
Surgical Option

Rhinophyma is a disfiguring end-stage manifestation of acne rosacea. It is characterized by a painless hyperplasia of the sebaceous glands and connective tissues of the nose. Numerous surgical modalities—including scalpel surgery, dermabrasion, CO2 laser ablation, and electrocautery—have been reported with varying results. We describe our experience with using a microdebrider to treat 2 patients—a 65-year-old man and a 74-year-old man—who presented with rhinophyma. The instrument we used was the Medtronic Straight-shot M4 Microdebrider. Using a low revolution speed, we easily excised the bulky superficial tissue. At higher revolution speeds with the use of a small shaver tip, we were able to achieve delicate contouring of the nasal tip and ala without causing scarring. Postoperatively, both patients exhibited an excellent cosmetic outcome and expressed a high degree of patient satisfaction. We conclude that the microdebrider is an excellent surgical tool for treating rhinophyma lesions. Its ease of use and its availability at most surgical centers makes it a favorable surgical option.

Treatment of patient with end-stage hepatocellular carcinoma by the mineral pulse light stimuli on LV acupoints- case report

2020 ◽  
Author(s):  
yongchol cha ◽  
Hyok Choe ◽  
Songjin Oh ◽  
ZinHwa Cha
Keyword(s):  
Hepatocellular Carcinoma ◽  
Light Stimulus ◽  
Treatment Options ◽  
Liver Malignancy ◽  
Pulse Light ◽  
Light Stimuli ◽  
Cirrhotic Patients ◽  
Light Stimulator ◽  
End Stage ◽  
High Degree

Abstract Background; Hepatocellular carcinoma (HCC) represents a major and steadily increasing global health challenge as the most common primary liver malignancy and leading cause of death in cirrhotic patients. The only hope for curative treatment or significant increase in life expectancy is early detection. Once patients have progressed towards end-stage HCC, effective treatment options are extremely limited on the background of a very high degree of heterogeneity in clinical presentation and outcome. Objectives; The purpose of this study is to perform clinical trial on an end-stage HCC patient by mineral pulse light stimulus on LV acupoints without any drugs use. Methods; End-stage HCC patient was stimulated by mineral pulse light stimulator (MPLS). Stimulus acupoints; LV3, LV14, SP6. The selected acupoints were stimulated by MPLS for 50~60 minutes once a day. The same method was performed on the patient for 25days and rested for 5days, and again repeated every month without any drugs use. Results; After treatment, the general patient conditions and alfa-fetoprotein level were improved and hepatoma size was decreased to 9.1×8.5cm from 11.0×9.7cm before treatment (a), and the decay areas was disappeared.Conclusions; End-stage HCC patient was improved by mineral pulse light stimulus on LV acupoints without any drugs use.

STUDIES OF CROWN ROT OF APPLE TREES

1942 ◽  
Vol 20c (9) ◽  
pp. 457-490 ◽  
Author(s):  
Maurice F. Welsh
Keyword(s):  
Soil Moisture ◽  
Apple Tree ◽  
Disease Incidence ◽  
Antagonistic Effect ◽  
Crown Rot ◽  
Phytophthora Cactorum ◽  
Additional Information ◽  
Two Factors ◽  
Below Ground ◽  
Old Trees

The form of apple tree crown rot that occurs in the irrigated orchards of British Columbia is confined to the below-ground bark tissues of the tree. It has been encountered in trees of all ages and of all the commercial varieties.Proof is given that this crown rot is caused by the fungus Phytophthora cactorum (L. & C.) Schroet. Typical symptoms of the disease have been reproduced in over 200 trees of various ages as a result of their inoculation with this fungus. Isolation has been possible only from the margins of active lesions, and has proved difficult even from these tissues. There is evidence that the activity of P. cactorum is inhibited in rotted tissues by the antagonistic effect of one or more secondary organisms.The influence of soil moisture and temperature on disease incidence has been studied by field observations and by the inoculation of two-year—old trees under controlled conditions in Wisconsin tank equipment in the greenhouse. The effects of these two factors seem to be interrelated, with the highest incidence of disease in an almost saturated soil at the highest temperature imposed, 32 °C. The influence of soil moisture is exerted particularly in the subsoil, rather than in the locus of crown rot attack.Certain varieties of apple have been found to vary in their resistance to crown rot. Deep wounds have proved necessary to allow entry of the fungus into bark tissues.The additional information now available is being utilized in a search for improved means of combating the disease.

scholarly journals Impact of Microtus arvalis and Lepus europaeus on apple trees by trunk bark gnawing

2019 ◽  
Vol 55 (No. 2) ◽  
pp. 142-147
Author(s):  
Josef Suchomel ◽  
Jan Šipoš ◽  
Ladislav Čepelka ◽  
Marta Heroldová
Keyword(s):  
Apple Tree ◽  
Common Vole ◽  
Apple Orchard ◽  
Lepus Europaeus ◽  
Microtus Arvalis ◽  
European Hare ◽  
Bark Damage ◽  
Dead Trees ◽  
Apple Cultivars ◽  
Common Voles

A unique evaluation of the apple tree trunk bark damage caused by common vole and European hare was presented. Damage was found in an apple orchard under organic farming, in Central Moravia (Czech Republic), at 700 m a.s.l. There were two cultivated apple cultivars Red Spring and Melodie/Angold. Damage occurred in winter with the snow cover lasting from December to February. In total 1 012 trees and 95.7% of trees were damaged. The cv. Red Spring was damaged more than cv. Melodie/Angold. Almost 90% of the dead trees were killed by common voles. While hares damaged both cultivars equally, voles damaged the cv. Red Spring to a significantly greater extent (P = 0.04). The study confirms the need of further research on the development of methodologies for orchard protection from damage caused by small mammals.

Hydrothermal Field Experiment Simulating Steel Canister Embedded in Expansive Clay - Physical Behavior of the Clay

1991 ◽  
Vol 257 ◽  
Author(s):  
Roland Pusch ◽  
Ola Karnland ◽  
Alain Lajudie ◽  
Rosemarie Atabek
Keyword(s):  
Field Experiment ◽  
Physical Properties ◽  
Mineral Composition ◽  
Water Saturation ◽  
Expansive Clay ◽  
Physical Behavior ◽  
Gas Formation ◽  
Aluminum Compounds ◽  
Short Test ◽  
High Degree

ABSTRACTField heat experiments with kaolinite/smectite clay surrounding heaters in boreholes were conducted for 0.7 and 4 years with temperatures up to 170-180°C. The short test gave a high degree of water saturation even in the hottest part (> 75 %) and almost no change in physical properties and mineral composition. The long test gave a dry inner zone of claystone, indicating gas formation, and rich precipitation of silica/aluminum compounds and sulphate minerals. Brittleness characterized the hot parts and stiffening occurred also in the colder parts due to precipitation of silica and aluminum.

scholarly journals Early Urological Complications After Live Related Renal Transplantation: An Update

2020 ◽  
Vol 46 (2) ◽  
pp. 68-72
Author(s):  
Tohid Mohammad Saiful Hossain ◽  
Tahmina Karim
Keyword(s):  
Kidney Transplant ◽  
Patient Survival ◽  
Surgical Complication ◽  
Graft Loss ◽  
Standard Of Care ◽  
Delay In Diagnosis ◽  
Post Transplant ◽  
Urological Complications ◽  
End Stage ◽  
High Degree

Background: Kidney transplant is the standard of care for end stage kidney disease and associated with immunological, vascular and urological complications. Urological complications remain the most common type of surgical complication in the early post-transplant period, inspite of major procedural advances many grafts are still being lost due to same. Objectives: The purpose of this review was to discuss the different presentations, compare various ureterovesical anastomosis techniques and provide a basic overview for the management of post-transplant urological complications hence to improve graft and patient survival. Methods: This study was a narrative review.  Recent available literature was searched by keywords. The most recent information from relevant articles were collected and reviewed. This write up was compiled after the review of articles from the last 50 years. Results: Majority of these complications could be traced back to the time of retrieval and anastomosis of ureter. So, the high degree of suspicion, early detection, accurate diagnosis and timely management of urological complications occurring after kidney transplant were the key tasks of transplant team managing the patients. A delay in diagnosis or management of these complications could lead to morbidity to the recipient even graft loss and or mortality. Conclusion: To minimize the early complications of post kidney transplantation high degree of suspicion and prompt intervention is needed for graft and patient survival. Bangladesh Med Res Counc Bull 2020; 46(2): 68-72

scholarly journals Influence Of Chemicals Of Arbolin Group On Branching Of Maiden Trees Of Three Apple Cultivars

2015 ◽  
Vol 23 (2) ◽  
pp. 95-104 ◽  
Author(s):  
Pavel Zhalnerchyk ◽  
Andrzej A. Przybyła ◽  
Franciszka Jaumień
Keyword(s):  
Amino Acids ◽  
Tree Growth ◽  
Potassium Salt ◽  
Apple Tree ◽  
Axillary Buds ◽  
Growing Seasons ◽  
Golden Delicious ◽  
Apple Cultivars

Abstract Studies realized in 2008 and 2009 proved that Neo Arbolin Extra (10 g GA4+7 and 50 g BA in 1 l of solution) and Neo Arbolin (18 g GA4+7 and 18 g BA in 1 l of solution) applied separately or with Algamino Plant (18% extract from seaweeds and 10% of potassium salt of amino acids) stimulated the development of axillary buds on apple maiden trees of ‘Ligol’, ‘Golden Delicious’ and ‘Mutsu’ cultivars grafted on M.9 rootstock, thus enhancing the number of feathers longer than 10 cm. Preparations were applied twice, from the middle of June to July 9. Results differed between years, which may be related to different weather courses during the growing seasons. Neo Arbolin Extra at a concentration 30 ml·l−1 with adjuvant addition (Adpros 5 ml·l−1) gave the best results in branching of maiden trees of three examined cultivars. Trees treated with those preparations twice produced more than 10 feathers (> 10 cm) in the year highly favoring maiden tree growth and more than 6 feathers in the less favorable year. Algamino Plant did not influence apple tree branching.

scholarly journals First Report of Root and Collar Rot by Sclerotium rolfsii on Apple Trees in Italy

Plant Disease ◽  
1999 ◽  
Vol 83 (7) ◽  
pp. 695-695
Author(s):  
L. Corazza ◽  
A. Belisario ◽  
E. Forti
Keyword(s):  
Apple Tree ◽  
Sclerotium Rolfsii ◽  
Apple Trees ◽  
Collar Rot ◽  
Athelia Rolfsii ◽  
Leaf Chlorosis ◽  
General Decline ◽  
Summer Temperatures ◽  
Ground Plate ◽  
Mycelial Strands

Sclerotium rolfsii Sacc. (teleomorph Athelia rolfsii (Curzi) Tu & Kimbrough) is a polyphagous, soilborne plant pathogen. In summer 1998, a sudden death of 2-year-old apple trees (Malus domestica Borkh.) cv. Royal Gala grafted on M9 rootstock was observed in an orchard near Rome, Italy. Symptoms were stunted vegetation, leaf chlorosis, and root and collar rot. A fungus identified as S. rolfsii was observed producing sclerotia and whitish mycelial strands on root and collar bark. Isolations from roots and at the margin of subcortical necrosis on the collar consistently yielded S. rolfsii colonies on potato dextrose agar (PDA); sclerotia developed within 7 days. Koch's postulates were fulfilled by inoculating 10 1-year-old apple tree cv. M9 rootstocks, grown in 3.5-liter pots, with an S. rolfsii isolate grown for 1 week on PDA at 25°C. One ground plate per plant was used, placed around collar and main roots. Five control plants were treated with PDA only. Rootstocks were kept in the greenhouse at 26 ± 2°C. Within 2 months, 70% of inoculated plants died, with marked necrosis girdling the collar. The other inoculated plants showed a general decline, with widespread necrosis on collars and main roots. Control plants remained healthy. S. rolfsii was reisolated from collars and roots of symptomatic plants. S. rolfsii has been recorded on apple trees in the U.S., India, China, and Israel. In Italy, it is destructive on several crops, and was recently recorded on walnut (1). This first outbreak of S. rolfsii on apple in Italy may have been favored by exceptionally warm late spring and summer temperatures. Reference: (1) A. Belisario and L. Corazza. Plant Dis. 80:824, 1996.

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