Survival of the Weevil, Hylobiuswarreni Wood, in Lodgepole Pine Stumps

1973 ◽  
Vol 3 (3) ◽  
pp. 367-372 ◽  
Author(s):  
H. F. Cerezke
Keyword(s):  
Lodgepole Pine ◽  
Larval Feeding ◽  
Larval Population ◽  
The Third ◽  
Tree Removal ◽  
Second Year ◽  
One Year ◽  
Feeding Zone

Survival of the weevil, Hylobiuswarreni Wood, in lodgepole pine stumps was examined over a 5-year period in a clearcut area near Robb, Alberta. Larvae continued to develop in the stumps for 2 years after tree removal, although an estimated 88.4% of the larval population apparently died, but none were found in the third year. In the fourth year after cutting, an increase in weevil abundance occurred in adjacent uncut trees. Numbers of newly developed adults in the clearcut areas one year after cutting were about the same as in the uncut areas, but were much higher than in the uncut areas in the second year. The increased rate of weevil development and high numbers of adults in clearcut areas during the second season was attributed to higher temperatures in the larval feeding zone of the stumps. The effects of clearcutting on the surviving adult weevils are discussed and recommendations are made for using clearcutting as a method for weevil control.

Effects of Partial Girdling on Growth in Lodgepole Pine with Application to Damage by the Weevil Hylobiuswarreni Wood

1974 ◽  
Vol 4 (3) ◽  
pp. 312-320 ◽  
Author(s):  
H. F. Cerezke
Keyword(s):  
Lodgepole Pine ◽  
Lateral Roots ◽  
Wide Band ◽  
Post Treatment ◽  
First Year ◽  
Larval Feeding ◽  
Radial Increment ◽  
The Third ◽  
Second Year ◽  
Root Collar

Leader growth and radial increment on the stem and main lateral roots during three consecutive years following partial girdling treatment were analyzed on 25- to 30-year-old lodgepole pine (Pinuscontorta Dougl. var. latifolia Engelm.) from a natural stand in west-central Alberta. Simulation of the larval feeding wounds of the weevil, Hylobiuswarreni Wood, consisted of the removal of a 7-mm-wide band of bark from 0% (control), 20%, 40%, 60%, 80%, and 90% of the root-collar circumference of 58 sample trees.Partial girdling reduced leader elongation and radial increment of the leader and lateral roots. Leader height decreased with increased girdling of the root-collar during each of the three post-treatment years. Below the leader, partial girdling of the root-collar did not affect radial increment in the first year, caused an increase during the second year, and a decrease in the third year. At 2 cm above the partial girdles, radial growth above the girdled side of stems was always less than that on the nongirdled side and showed a trend of increase with increased girdling on both girdled and nongirdled sides of the stem. Radial increment was considerably reduced on lateral roots extending below girdle wounds during the three post-treatment years. Two graphs are prepared which can be used to estimate height and radial increment losses in young pine stands infested by H. warreni.

SPREADING RATE OF CREEPING-ROOTED ALFALFA

1971 ◽  
Vol 51 (5) ◽  
pp. 367-370
Author(s):  
D. H. HEINRICHS
Keyword(s):  
Stand Density ◽  
Shoot Formation ◽  
Spreading Rate ◽  
Grid Spacing ◽  
The Third ◽  
Second Year ◽  
One Year ◽  
Spreading Line

Creeping-rooted alfalfa plants were studied for rate of spreading when planted in a grid spacing of 1.8 m. One year after planting, only three out of 15 lines displayed 100% creep in all five replicates on the basis of shoot formation. In the second year, all clones of all 15 plant lines had developed above-ground shoots. The range of spread varied from an average of 101 cm for the least spreading line to 176 cm for the strongest spreading line. By the third year they had expanded an additional 27% on the average. The stand density decreased as distance from the center of the plant increased. There were definite differences among creeping-rooted plant lines in rate of spreading ability. In three years most plants had spread horizontally to within each other’s peripheries.

scholarly journals "The Big Sister Model in Educational Training” The Art of Mentoring and fellow Mentoring" (BSM)

2017 ◽  
Vol 6 (1) ◽  
pp. 93
Author(s):  
Warda Sada-Gerges (PhD )
Keyword(s):  
Training Program ◽  
Interpersonal Relations ◽  
Training Model ◽  
Control Group ◽  
Educational Training ◽  
Continuous Training ◽  
The Third ◽  
Second Year ◽  
One Year ◽  
Student Mentor

In an ongoing search for new models to streamline college training and mentoring, a different training model was developed called the "Big Sister Model". This model was experienced for five years in the kindergarten-training program at the Kay College of education in Israel. Within this model, two female students are trained in each kindergarten: one in the third college year and the other in the second. Together with kindergarten staff, the two students plan the class curriculum and activities. A third-year student, who possess additional one year experience in practicing (veteran), has the opportunity to mentor a 2nd year student who also has the opportunity to observe the training of the third year and get more experience. This process provides a good staff relationship and develops interpersonal relations based on social and psychological elements, which points to a huge positive change in behavior, interpersonal relations and its motivations. In peer mentoring, the mentor accompanies, analyzes, supports, instructs, empowers and provides necessary knowledge in the mentoring process. It undergoes a process of empowerment, leadership, and success (Power et Al, 2011). This study is a continuous action research that aims at examining the effectiveness of the “Big sister” training model. When a third-year student mentors a second-year student, her personality will be accordingly empowered. Moreover, she is exposed to another year of the second year training program, once when she receives guidance in the second year and once more as a 3rd year student mentor. The second-year student enjoys continuous training throughout the day with a close colleague in addition to the training teacher and pedagogical mentor. In addition, she reveals the contents and skills of the third year allowing her ongoing internalization over time all third-year program. In the effectiveness of the training, we also sought to deeply examine the areas that this model promotes and strengthens as well as, how much the students perceive it as a training benefactor compared to the regular model in a control group.

scholarly journals Different Web Credibility Assessment as a Result of One Year Difference in Education

2015 ◽  
Vol 8 (2) ◽  
pp. 117-133
Author(s):  
Oana Ţugulea
Keyword(s):  
Real World ◽  
Ease Of Use ◽  
Information Support ◽  
Credibility Assessment ◽  
The Third ◽  
Second Year ◽  
Web Credibility ◽  
One Year ◽  
Site User

AbstractThis study is based on the hypothesis that one year of study difference between students underlines different evaluations of the dimensions of commercial presentation websites’ credibility. The objectives of this study are: (-) highlighting significant differences of credibility dimensions evaluation between second and third year of study students; (-) highlighting the dimensions considered to be important by the second year of study students; (-) highlighting the dimensions considered to be important by the third year of study students. For presentation commercial Websites, as approached by this study, second year of study students consider “site-user connection” and “information support” as important dimensions; for the same category of Websites, third year of study students consider “ease of use”, “real world feel” and “site-etiquette” as important dimensions.

Bark Thickness and Bark Resin Cavities on Young Lodgepole Pine in Relation to Hylobiuswarreni Wood (Coleoptera: Curculionidae)

1973 ◽  
Vol 3 (4) ◽  
pp. 599-601 ◽  
Author(s):  
H. F. Cerezke
Keyword(s):  
Lodgepole Pine ◽  
Lateral Roots ◽  
Larval Feeding ◽  
Bark Thickness ◽  
Cavity Size ◽  
Inner Bark ◽  
Feeding Zone ◽  
Root Collar ◽  
Lower Stem

Some patterns of bark thickness and bark resin cavity size, density, and their proportionate area in the inner bark on lateral roots, root-collar, and lower stem of 20–25-year-old lodgepole pine (Pinuscontorta Dougl. var. latifolia Engelm.) are described in relation to the oviposition and larval feeding-zone of the weevil, Hylobiuswarreni Wood. The oviposition and feeding-zone occurred where bark thickness was maximal, but where the density of cavities and their proportionate area occupied in the bark were low.

LIME AND DAIRY PRODUCTION

1982 ◽  
pp. 93-103
Author(s):  
N.A. Thomson
Keyword(s):  
Soil Moisture ◽  
Dairy Cows ◽  
Milk Production ◽  
Soil Ph ◽  
Dairy Production ◽  
Pasture Production ◽  
The Third ◽  
One Year ◽  
Plasma Magnesium

In a four year grazing trial with dairy cows the application of 5000 kg lime/ ha (applied in two applications of 2500 kg/ha in winter of the first two years) significantly increased annual pasture production in two of the four years and dairy production in one year. In three of the four years lime significantly increased pasture growth over summer/autumn with concurrent increases in milk production. In the last year of the trial lime had little effect on pasture growth but a relatively large increase in milkfat production resulted. A higher incidence of grass staggers was recorded on the limed farmlets in spring for each of the four years. In the second spring immediately following the second application of lime significant depressions in both pasture and plasma magnesium levels were recorded. By the third spring differences in plasma magnesium levels were negligible but small depressions in herbage magnesium resulting from lime continued to the end of the trial. Lime significantly raised soil pH, Ca and Mg levels but had no effect on either soil K or P. As pH levels of the unlimed paddocks were low (5.2-5.4) in each autumn and soil moisture levels were increased by liming, these factors may suggest possible causes for the seasonality of the pasture response to lime

Bankruptcy Model Construction and its Limitation in Input Data Quality

2019 ◽  
Vol 10 (2) ◽  
pp. 117-125
Author(s):  
Dana Kubíčková ◽  
◽  
Vladimír Nulíček ◽  
Keyword(s):  
Data Quality ◽  
Normal Distribution ◽  
Input Data ◽  
Model Construction ◽  
The Third ◽  
Third Stage ◽  
Discriminant Analyses ◽  
One Year ◽  
The University ◽  
Multivariate Discriminant

The aim of the research project solved at the University of Finance and administration is to construct a new bankruptcy model. The intention is to use data of the firms that have to cease their activities due to bankruptcy. The most common method for bankruptcy model construction is multivariate discriminant analyses (MDA). It allows to derive the indicators most sensitive to the future companies’ failure as a parts of the bankruptcy model. One of the assumptions for using the MDA method and reassuring the reliable results is the normal distribution and independence of the input data. The results of verification of this assumption as the third stage of the project are presented in this article. We have revealed that this assumption is met only in a few selected indicators. Better results were achieved in the indicators in the set of prosperous companies and one year prior the failure. The selected indicators intended for the bankruptcy model construction thus cannot be considered as suitable for using the MDA method.

Cyclanilide Spray Increases Branching in Containerized Whip Production

2007 ◽  
Vol 25 (4) ◽  
pp. 221-228
Author(s):  
Petra Sternberg ◽  
Daniel K. Struve
Keyword(s):  
Shoot Elongation ◽  
Major Goal ◽  
Mature Tree ◽  
Lateral Branching ◽  
Reduced Height ◽  
Second Year ◽  
One Year ◽  
Tree Quality ◽  
Tree Pruning ◽  
Number Of Branches

Abstract A major goal in the production of tree whips is to produce appropriately sized, well-branched liners with a crown form similar to that of a mature tree. Pruning is used to induce lateral branching. This can result in poor tree quality, reduced growth and the practice is labor intensive. An alternative to mechanical pruning, foliar Cyclanilide® (CYC) sprays at 0, 56, 1 12 and 223 ppm were applied to container grown whips to determine its effect on branching of Amelanchier; Cercis, Malus and Tilia whips. Most species responded to CYC sprays with increased lateral branching if treated during active shoot elongation. Cyclanilide® sprays of 1 12 ppm produced the greatest number of branches. Sprays at 56 ppm resulted in reduced branching (relative to 112 ppm), while sprays of 223 ppm did not increase the number of branches, relative to sprays of 112 ppm, but reduced growth. Cyclanilide® sprays reduced height growth, relative to untreated whips, but did not alter height diameter growth. Cyclanilide® foliar applications to container -grown whips during periods of active shoot elongation increased branching in one-year-old whips that normally do not branch until the second year of production. Further, the origin of lateral branching can be controlled by timing of CYC application. The results indicate that CYC foliar sprays can be an important tool in the production of one-year-old branched whips.

The Return of N’Guyen Van Binh

2020 ◽  
Vol 46 (2) ◽  
pp. 25-42
Author(s):  
Geoff Read
Keyword(s):  
Third Republic ◽  
Forced Labor ◽  
Political Prisoner ◽  
Second Empire ◽  
Indentured Servitude ◽  
The Third ◽  
Original Sentence ◽  
French Colonial ◽  
One Year

This article explores the case of N’Guyen Van Binh, a South Vietnamese political prisoner exiled for his alleged role in “Poukhombo’s Rebellion” in Cambodia in 1866. Although Van Binh’s original sentence of exile was reduced to one year in prison he was nonetheless deported and disappeared into the maw of the colonial systems of indentured servitude and forced labor; he likely did not survive the experience. He was thus the victim of injustice and his case reveals the at best haphazard workings of the French colonial bureaucracy during the period of transition from the Second Empire to the Third Republic. While the documentary record is entirely from the perspective of the colonizers, reading between the lines we can also learn something about Van Binh himself including his fierce will to resist his colonial oppressors.

Influence of abiotic factors and hosts on seasonal dynamic of green lacewing, Chrysoperla carnea (Stephens)

2016 ◽  
Vol 3 (3) ◽  
Author(s):  
ARVIND KUMAR ◽  
POOJA KHULBE
Keyword(s):  
Abiotic Factors ◽  
Host Population ◽  
Maximum Temperature ◽  
First Year ◽  
Green Lacewing ◽  
Larval Population ◽  
Correlation Studies ◽  
Helianthus Annus ◽  
Sunflower Crop ◽  
Second Year

Influence of abiotic factors and hosts on population dynamics of green lacewing, Chrysoper lacarnea (Stephens) was studied in sunflower, Helianthus annus (Linn.).The maximum number of C. carnea population was found during mid March –mid April in the first year and mid April – mid May in the second year in sunflower crop. The maximum number of host population viz. egg and larva of Helicoverpa armigera and Myzuspe rsicae population were found during mid March –mid April in both the year and correlation studies revealed the positive and significant correlation between larval population of H. armigera, M. persicae and predator C. carnea. While there was no significant relationship found between eggs of H. armigera and C. carnea. The C. carnea population on H. annus during both the year was positively correlated with maximum temperature and found significant,while negatively correlated with relative humidity.However, no significant correlation of C. carnea was found with minimum temperature in both the year.

Sign in / Sign up

Export Citation Format

Share Document