scholarly journals EVALUASI LAPANG TERHADAP DAMPAK APLIKASI INSEKTISIDA ISOPROCARB PADA SERANGGA PREDATOR DAN HAMA KUTU PERISAI AULACASPIS TEGALENSIS Zhnt. (HOMOPTERA: DIASPIDIDAE) DI PERTANAMAN TEBU

2004 ◽  
Vol 4 (2) ◽  
pp. 69-74
Author(s):  
Rosma Hasibuan
Keyword(s):  
Field Study ◽  
Field Evaluation ◽  
Chemical Insecticide ◽  
Insecticide Application ◽  
Sugarcane Field ◽  
Carbamate Insecticide ◽  
Predacious Species ◽  
The Impact ◽  
Field Plots ◽  
Aulacaspis Tegalensis

Field evaluation of isoprocarb insecticide-application-effects on predacious insects and scale pest Aulacaspis tegalensis Zhnt. (Homoptera: Diaspididae) in sugarcane plantations.  The sugarcane scale, Aulacaspis tegalensis Zehntner,  is a new  serious pest of sugarcane in Lampung Province.  Over the years, most control practices against A. tegalensis  rely on the use of chemical insecticide.  A  field  study was conducted to assess  the  impact of  isoprocarb (carbamate-insecticide) on sugarcane scale pests  and  their natural predators in sugarcane  plantation.  The results indicated  that the application of  isoprocarb  (at recommended  concentration = 1.25 mg/L) in sugarcane field failed to cause  a significant reduction on  scale pest  populations.  In contrast, the numbers of  predacious insects was significantly reduced  in isoprocarb-treated-field plots.     The  predacious insects  in association with scale pests in sugarcane fields were predominantly  coccinellids.  Four species of primary predacious coccinellids attacking scale pests were: Chilocorus melanophthalmus, Chilocorus sp.,  Scymnus sp, and Telsimia sp.  This field study indicated that the predacious species were more susceptible to isoprocarb than their prey.

Administrative Empowerment and its Impact on Creative Thinking: A Field Study in Private Sector Banks in the Kurdistan Region

2015 ◽  
Vol 1 (3) ◽  
pp. 317
Author(s):  
Abdul Wahab Abdul Fatah Alalwsy
Keyword(s):  
Private Sector ◽  
Field Study ◽  
Creative Thinking ◽  
Study Finding ◽  
Kurdistan Region ◽  
Major Study ◽  
The Impact

The aim of this study is to reveals the Impact of managerial empowerment in creative thinking at the private sector banks of Kurdistan Region .the study depends on descriptive and analytical methodize using the practical manner. Study sample consists of employees in (13) banks of the private sector at Kurdistan Region, its amounted (132). a major study finding that there is a significant statistical impact and positive statistical significant correlation between  managerial empowerment and creative thinking ,by its factors, Originality ,Flexibility ,Fluency, Sensitivity to the problems and the ability to analyze .                                                                                                                     

scholarly journals Testing the Effect of Hedge Height on Perceived Safety—A Landscape Design Intervention

2021 ◽  
Vol 13 (9) ◽  
pp. 5063
Author(s):  
Katinka H. Evensen ◽  
Helena Nordh ◽  
Ramzi Hassan ◽  
Aslak Fyhri
Keyword(s):  
Field Study ◽  
Field Experiments ◽  
Landscape Design ◽  
Urban Environments ◽  
Space Management ◽  
Perceived Safety ◽  
Urban Green Spaces ◽  
Outdoor Spaces ◽  
Surrounding Areas ◽  
The Impact

Access to safe, green urban environments is important for quality of life in cities. The objective of this study is to explore the impact of a safety-enhancing landscape design measure on visitors’ experiences in an urban park. Additionally, this paper combines the use of field and virtual reality (VR) experiments, contributing methodological insights into how to evaluate safety measures in green space management and research on perceived safety. In a field experiment (n = 266), we explored whether the height of a hedge along a pathway influenced perceived safety among users. The field study showed that cutting down the hedge improved the perceived prospect of the immediate surrounding areas for female users, which again made them feel safer in the park. We developed a VR experiment for an evening scenario in the same environment (n = 19) to supplement the field study and test the effect of the intervention further. The VR experiment also found a gender effect on perceived safety, with females reporting lower perceived safety, but no effect was shown for the height of the hedge. The results in this study show that environmental attributes such as perceived prospect and concealment should be considered in the design and management of urban green spaces. Additionally, this research demonstrates an approach to conducting field experiments to test the effects of actual design interventions and then further developing these experiments using VR technology. Further research on perceived safety in outdoor spaces is needed to make use of this combined method’s potential.

scholarly journals Influence of Flower Thrips on Fusarium Hardlock Severity

Plant Disease ◽  
2007 ◽  
Vol 91 (11) ◽  
pp. 1423-1429 ◽  
Author(s):  
D. J. Mailhot ◽  
J. J. Marois ◽  
D. L. Wright
Keyword(s):  
Gossypium Hirsutum ◽  
Untreated Control ◽  
Yield Loss ◽  
Fusarium Verticillioides ◽  
Field Conditions ◽  
Control Group ◽  
Flower Thrips ◽  
The Impact ◽  
Field Plots

Cotton (Gossypium hirsutum) fiber is sometimes affected by hardlock, which is characterized by a failure of the fiber to expand outward from the boll at maturity. Because affected fiber is inaccessible to mechanical harvesters, yield loss can be considerable. Hardlock has been linked to infection by Fusarium verticillioides. The involvement of flower thrips (Frankliniella spp.), which are commonly found in cotton flowers, was explored. At 1100 h, approximately 10% of cotton flowers contained thrips that were carrying F. verticillioides. The effect of thrips and/or Fusarium in flowers and bolls was explored under greenhouse conditions. Exposing flowers to Fusarium and thrips resulted in bolls with the most severe symptoms. Exposure to either Fusarium or thrips alone resulted in more hardlock than was noted in the control group. The impact of thrips was also evaluated under field conditions. Field plots were treated with insecticides, a fungicide, both, or left untreated. Insecticides reduced thrips numbers and reduced hardlock severity. The fungicide had no impact on thrips numbers and was less effective at reducing hardlock. Combining insecticide and fungicide applications was no more effective than using insecticides alone, although it more frequently increased yield. The untreated control plots generally had the most severe hardlock and lowest yields. Reducing hardlock severity resulted in higher yields, although not consistently. These studies suggest that thrips increase the severity of hardlock, and reducing their numbers may diminish hardlock severity.

Impact of vegetative cover and slope on runoff, erosion, and water quality for field plots on a range of soil and spoil materials on central Queensland coal mines

Soil Research ◽  
2000 ◽  
Vol 38 (2) ◽  
pp. 313 ◽  
Author(s):  
C. Carroll ◽  
L. Merton ◽  
P. Burger
Keyword(s):  
Water Quality ◽  
Soil Erosion ◽  
Overland Flow ◽  
Salt Content ◽  
Vegetative Cover ◽  
Rhodes Grass ◽  
Erosion Rates ◽  
Mine Sites ◽  
The Impact ◽  
Field Plots

In 1993, a field study commenced to determine the impact of vegetative cover and slope on runoff, erosion, and water quality at 3 open-cut coal mine sites. Runoff, sediment, and water quality were measured on 0.01-ha field plots from 3 slope gradients (10, 20, 30%), with pasture and tree treatments imposed on soil and spoil material, and 2 soil and spoil plots left bare. The greatest soil erosion occurred before pasture cover established, when a large surface area of soil (>0.5 plot area) was exposed to rainfall and overland flow. Once buffel grass (Cenchrus ciliaris) colonised soil plots, there were negligible differences in soil erosion between slope gradients. On spoil, Rhodes grass (Chloris gayana) reduced in situ soluble salt content, and reduced runoff electrical conductivity to levels measured in surrounding creeks. Where spoil crusted there was poor vegetative growth and unacceptably large runoff and erosion rates throughout the study.

Sociocultural Influences on an Important Example of Iranian Urban Form

2008 ◽  
Vol 33 (1) ◽  
pp. 72-85
Author(s):  
Fereshteh Habib ◽  
Ibrahim Numan ◽  
Hifsiye Pulhan
Keyword(s):  
Field Study ◽  
Urban Form ◽  
Human Perception ◽  
Cultural Factors ◽  
Dimensional Approach ◽  
Sociocultural Influences ◽  
Deductive Method ◽  
The Subject ◽  
The Impact ◽  
The City

In casting a new look at city; this study interprets the urban form in respect of the role played by human perception of space. The main aim of this research at a macro level is to attain a strong theorical basis through a multi-dimensional approach to the city. The method of analyzing and carrying out a critique of it at an applied level will clarify the impact, which cultural factors have in the formation of urban form. This preliminary recognition and idealism is based on a hermeneutic and deductive method that is particular to the intellectual sciences In the process of devising theories, studying the urban planning texts related to the subject of study and the conclusion from the field study which is carried out in the Isfahan Naghshe Jahan square in the Safavy period played a key role in the research in addition to the goals and questions.

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