scholarly journals Plastic mulches reduce adult and larval populations of Drosophila suzukii in fall-bearing raspberry

2021 ◽  
Author(s):  
Hanna McIntosh ◽  
Amaya Atucha ◽  
Philip A. Townsend ◽  
W. Beckett Hills ◽  
Christelle Guédot
Keyword(s):  
Management Practices ◽  
Canopy Temperature ◽  
Visible Spectrum ◽  
Cultural Practice ◽  
Management Program ◽  
Drosophila Suzukii ◽  
Uv Spectrum ◽  
Future Studies ◽  
Major Pest ◽  
Conventional Systems

AbstractThe invasive spotted-wing drosophila, Drosophila suzukii, is a major pest of fruit crops worldwide. Management of D. suzukii relies heavily on chemical control in both organic and conventional systems, and there is a need to develop more sustainable management practices. We evaluated the efficacy of three colors of plastic mulches at reducing populations of D. suzukii in fall-bearing raspberry and assessed the mulches’ impacts on canopy microclimate factors relevant to D. suzukii. Black, white, and metallic plastic mulches reduced adult D. suzukii populations by 42–51% and larval populations by 52–72% compared to the grower standard. The mulches did not change canopy temperature or relative humidity, but metallic mulches increased canopy light intensity compared to the black mulch. Radiance in the visible spectrum (401–680 nm) was higher for the white and metallic mulch plots, but the black mulch plots did not differ from the control. In the UV spectrum (380–400 nm), all three plastic mulches had higher radiance than the control plots. Future studies will determine whether changes in radiance are associated with the observed reduction in D. suzukii populations. Plastic mulches are a promising cultural practice for managing D. suzukii since they can reduce adult and larval populations and could be incorporated into an integrated pest management program in both organic and conventional systems.

scholarly journals Plastic mulches reduce adult and larval populations of Drosophila suzukii in fall-bearing raspberry

2021 ◽  
Author(s):  
Hanna R McIntosh ◽  
Amaya Atucha ◽  
W Beckett Hills ◽  
Philip A Townsend ◽  
Christelle Guedot
Keyword(s):  
Management Practices ◽  
Canopy Temperature ◽  
Visible Spectrum ◽  
Cultural Practice ◽  
Management Program ◽  
Drosophila Suzukii ◽  
Uv Spectrum ◽  
Future Studies ◽  
Major Pest ◽  
Conventional Systems

The invasive spotted-wing drosophila, Drosophila suzukii, is a major pest of fruit crops world-wide. Management of D. suzukii relies heavily on chemical control in both organic and conventional systems, and there is a need to develop more sustainable management practices. We evaluated the efficacy of three colors of plastic mulches at reducing populations of D. suzukii in fall-bearing raspberry and assessed the mulches' impacts on canopy microclimate factors relevant to D. suzukii. Black, white, and metallic plastic mulches reduced adult D. suzukii populations by 42-51% and larval populations by 52-72% compared to the grower standard. The mulches did not change canopy temperature or relative humidity, but metallic mulches increased canopy light intensity compared to the black mulch. Radiance in the visible spectrum (401-680 nm) was higher for the white and metallic mulch plots, but the black mulch plots did not differ from the control. In the UV spectrum (380-400 nm), all three plastic mulches had higher radiance than the control plots. Future studies will determine whether changes in radiance are associated with the observed reduction in D. suzukii populations. Plastic mulches are a promising cultural practice for managing D. suzukii since they can reduce adult and larval populations and could be incorporated into an integrated pest management program in both organic and conventional systems.

CONSIDERATIONS OF TALENT MANAGEMENT IN RETENTION OF ACADEMICS IN THE NATIONAL UNIVERSITY OF LESOTHO

2021 ◽  
Author(s):  
Theressa Madzingesu Zengeya ◽  
◽  
Gregory Alexander ◽  
Desiree Pearl Larey ◽  
◽  
...  
Keyword(s):  
Social Theory ◽  
Qualitative Methodology ◽  
Management Practices ◽  
Talent Management ◽  
Symbolic Capital ◽  
Management Program ◽  
Structured Interviews ◽  
Design And Implementation ◽  
National University ◽  
The University

The aim of the study was to examine the contribution of talent management practices at the National University of Lesotho in the retention of talented academics. The university has immense competition within the local, regional and international labour market. It isthreatened by high mobility and low retention of highly qualified staff, which has affected the quality of learning, especially postgraduate programmes. The study employed Bourdieu’s social theory and Adam’s theory of equity as a theoretical lens to understand talent management practices to retain talented academics. Bourdieu’s theory was used to offer insight on the various forms of capital, and how the capitals could be instrumental in the design and implementation of talent management practices in order to increase retention of talent in universities. In this study ‘talent’ is used to refer to holders of doctorates, associate professors and professors or researchers of new information and theories and inventors of new technology with great potential to make a significant impact on the university’s productivity. A literature review was undertaken to examine how the social theory of Bourdieu, particularly the conversion of different kinds of capital (symbolic capital) are used by the university to recognise the value of talented academics in order to retain these academics. Following a qualitative methodology and purposive sampling, data was generated through semi-structured interviews and document analysis to advance a critical and interpretive understanding of the perspectives of talent management from both management and talented academics in the university. Thematic analysis was used to synthesise the data. The data from fourteen (14) participants composed of management and academics revealed that, though the university is implementing talent management practices, it does not have an official and structured talent management program, which is imperative in retaining academics. This study concludes by advocating the design and implementation of a formal, contextual and structured talent management framework, in consultation with all key stakeholders, in order to increase retention of talent academics in the National University of Lesotho.

Assessment of solid waste management practice in the university campus

2021 ◽  
Vol 22 (3) ◽  
pp. 561-575
Author(s):  
Saad Dahlawi ◽  
Mahmoud F. El Sharkawy
Keyword(s):  
Waste Management ◽  
Solid Waste ◽  
Management Practices ◽  
Solid Waste Management ◽  
Management Practice ◽  
Chemical Properties ◽  
Management Program ◽  
University Campus ◽  
Content Type ◽  
The University

Purpose Municipal solid waste (MSW) consists mainly of several recyclable materials such as paper and cardboard. Inside the educational institutes, especially universities, MSW is generated from several facilities including offices and cafeterias. Without an effective management program, solid waste can have detrimental impacts on the environment. This paper aims to assess the solid waste management practices followed at the main campus of Imam Abdulrahman Bin Faisal University (IAU), Dammam – Saudi Arabia. Design/methodology/approach The MSW samples were collected from different sources inside the IAU campus such as the college buildings (such as the teaching rooms and staff offices), the administrative buildings and services buildings (e.g. the main library, the photocopying center, the restaurant and cafeteria) at least one time per week during a full academic term (January–May) of the academic year 2017–2018. The collected MSW samples were segregated into seven categories, and the net amount of each category and the overall weight of the MSW were determined once every week. The MSW samples were characterized for physical and chemical properties including moisture, carbon and ash contents. Food product waste (FPW) of the main university restaurant was studied separately. Findings Data on the composition of MSW samples revealed that 80% of wastes were recyclable, 19% as compostable materials, while only 1% of the materials were a non-recyclable waste. More than 73% of the recyclable materials include paper and plastic warranting dire need of an effective solid waste management program. The highest value of FPW was recorded for the breakfast meal. Originality/value Most of the waste generated from the university campus was recyclable type that needs to be handled carefully to avoid its mixing with other types of the waste stream. Waste characterization is an important tool that helps in understanding the amount and pattern of waste generation. It can be used as a decision-making tool for implementing sustainable waste management programs for universities.

scholarly journals Veld management with specific reference to game ranching in the grassland and savanna areas of South Africa

Koedoe ◽  
1990 ◽  
Vol 33 (2) ◽  
Author(s):  
W.S.W. Trollope
Keyword(s):  
South Africa ◽  
Land Use ◽  
Nature Conservation ◽  
National Parks ◽  
Management Practices ◽  
Wide Spectrum ◽  
Management Program ◽  
Specific Reference ◽  
Game Ranching ◽  
Over Time

Veld management refers to the management of natural vegetation for specific objectives related to different forms of land use. In the wildlife context a wide spectrum of different forms of land use are practised ranging from pure nature conservation in large national parks through to smaller areas used for game farming. Consequently the products useable to society emanating from these areas vary greatly, and therefore the management of veld stocked with wildlife is extremely complex and must be adapted to the particular form of land use that is being practised. A generally accepted principle is that the smaller the area being used for wildlife the more intensively it must be managed, particularly game ranches. A prerequisite for the development of an effective veld management program is a comprehensive assessment of the condition of the veld upon which realistic veld management practices can be formulated. These practices will include stocking the veld with the appropriate species and numbers of animals, grazing and browsing management, veld burning and the provision of watering points. Finally a programme for monitoring veld condition over time is a prerequisite for sound veld management.

Curative Activity of Insecticides Used to Control Spotted-Wing Drosophila (Diptera: Drosophilidae) in Tart Cherry Productions

2020 ◽  
Vol 113 (5) ◽  
pp. 2372-2379
Author(s):  
Ignatius Putra Andika ◽  
Christine Vandervoort ◽  
John C Wise
Keyword(s):  
Residue Analysis ◽  
Spotted Wing Drosophila ◽  
Tart Cherry ◽  
Drosophila Suzukii ◽  
Preventive Actions ◽  
Curative Action ◽  
Major Pest ◽  
Marketable Fruit ◽  
Tart Cherries ◽  
Vast Range

Abstract Spotted-wing drosophila (Drosophila suzukii Matsumura) is a major pest of soft-skinned fruit and due to the low infestation tolerance for marketable fruit, growers take preventive actions to hinder spotted-wing drosophila damages. Insecticides application is one of the measures taken by growers. Although intensive spraying programs have been used to manage spotted-wing drosophila, its early infestation, rapid reproduction, and vast range of host have caused damage to still occur in fruit, including tart cherries, Prunus ceraus (Linnaeus). Therefore, there is a merit for information on insecticide’s curative activity to understand whether sprays manage spotted-wing drosophila individuals within infested fruit. Tart cherry fruit were exposed to spotted-wing drosophila adults for 3 d. After this infestation period, insecticides were applied 1 and 3 d later. Small larvae, large larvae, and pupae were counted 9 d after initial infestation. A parallel set of insecticide-treated tart cherries were subjected to residue analysis. Phosmet and spinetoram were able to reduced live spotted-wing drosophila counts compared with the control at all life stages and insecticide application times, whereas zeta-cypermethrin, acetamiprid, and cyantraniliprole were less consistent in reducing spotted-wing drosophila numbers. Chromobacterium subtsugae demonstrated no curative action. Residue analysis demonstrated that zeta-cypermethrin residues mostly remained on fruit surface. Small portions of phosmet, spinetoram, and cyantraniliprole were able to penetrate fruit surfaces and move into subsurface tissues. Acetamiprid was the only compound which >47% penetrated into the fruit subsurface consistently across both years. Curative activity demonstrated in this study can provide additional tactics for spotted-wing drosophila management in tart cherry Integrated Pest Management (IPM) programs.

FIRST RECORD OF TRICHOGRAMMA INYOENSE (HYMENOPTERA: TRICHOGRAMMATIDAE) ATTACKING THE BERTHA ARMYWORM, MAMESTRA CONFIGURATA (LEPIDOPTERA: NOCTUIDAE)

1998 ◽  
Vol 130 (1) ◽  
pp. 105-106 ◽  
Author(s):  
P.G. Mason ◽  
J.D. Pinto ◽  
Z.L. Long ◽  
J.L. Harris
Keyword(s):  
Current Trend ◽  
First Record ◽  
Management Program ◽  
Western Canada ◽  
Mamestra Configurata ◽  
Major Pest ◽  
Negative Impacts ◽  
Agriculture And Food ◽  
The Impact ◽  
Bertha Armyworm

The bertha armyworm, Mamestra configurata Walker, is a major pest of canola in western Canada. In 1994, 1995, and 1996 more than 670 000, 650 000, and 250 000 ha of canola were sprayed for bertha armyworm, respectively (Anonymous 1994, 1995, 1996). Despite the current trend towards increased acreage of canola production in western Canada, canola acreages declined markedly in 1996 from that planted in 1995 (Saskatchewan Agriculture and Food Statistical Facts 1996) in part because of the perception by farmers of the impact of bertha armyworm outbreaks in 1994 and 1995. Much research has been carried out in western Canada on the bertha armyworm with the aim of developing an integrated pest management program which includes the understanding of its biological control agents. Turnock (1984) reported that the native parasitoid complex of larval M. configurata consists of five species of Hymenoptera and 10 species of Diptera. Only two of these, namely Banchus flavescens Cresson (Hymenoptera: Ichneumonidae) and Athrycia cinerea (Coquillett) (Diptera: Tachinidae), have large negative impacts on its populations (Wylie and Bucher 1977).

Emergence of Maruca vitrata as a Major Pest of Food Legumes and Evolution of Management Practices in Asia and Africa

2021 ◽  
Vol 66 (1) ◽  
pp. 141-161
Author(s):  
Ramasamy Srinivasan ◽  
Manuele Tamò ◽  
Periasamy Malini
Keyword(s):  
Habitat Management ◽  
Management Practices ◽  
Molecular Taxonomy ◽  
Maruca Vitrata ◽  
Food Legumes ◽  
Legume Pod Borer ◽  
Classical Biocontrol ◽  
Recent Developments ◽  
Major Pest ◽  
Management Approaches

Legume pod borer, Maruca vitrata, has emerged as a major pest on food legumes in Asia and Africa. It is an oligophagous pest, feeding on over 70 species in Fabaceae. We examine the species complex in Asia, Africa, Oceania, and the Americas, with an emphasis on molecular taxonomy. Studies on pheromone production and perception suggest the existence of pheromone polymorphism, especially in Asia and Africa. No Maruca-resistant varieties are available in the major food legumes including cowpea, pigeonpea, mungbean, and yard-long bean. Legume growers use chemical pesticides indiscriminately, leading to the development of pesticide resistance. However recent developments in habitat management, classical biocontrol with more efficient parasitoids, biopesticides, and judicious use of insecticides pave the way for sustainable management of M. vitrata, which can reduce the pesticide misuse. Active engagement of the private sector and policy makers can increase the adoption of integrated pest management approaches in food legumes.

scholarly journals Abamectin Efficacy on the Potato Cyst Nematode Globodera pallida

Plants ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 12
Author(s):  
Nicola Sasanelli ◽  
Ion Toderas ◽  
Pasqua Veronico ◽  
Elena Iurcu-Straistaru ◽  
Stefan Rusu ◽  
...  
Keyword(s):  
Potato Crop ◽  
Management Program ◽  
Cyst Nematode ◽  
Potato Cyst Nematode ◽  
Globodera Pallida ◽  
Reproduction Rate ◽  
Major Pest ◽  
Biological Pesticide ◽  
Ld50 Value ◽  
Potato Crops

The potato cyst nematode Globodera pallida is a major pest of the potato crop. Abamectin is a biological pesticide showing high nematicide activity, but its efficacy to control G. pallida has not been investigated to date. In this study, combination of different abamectin concentrations ranging from 1.125 to 36 µg/mL x exposure times from 24 to 384 h were tested on the nematode in a hatching test. Abamectin induced mortality with LD50 value in the range of 13.23 (after 24 h) to 2.90 µg/mL (after 384 h). A glasshouse experiment was also performed in pots filled with soil infected with G. pallida in the presence of sprouted potato tubers cultivar “Spunta”. Abamectin at 4.5, 9.0, 18.0 and 36.0 µg/mL was used in comparison with nematicide fosthiazate. The doses of 18 and 36 µg/mL significantly reduced number of eggs, juveniles, cyst/g soil and reproduction rate in comparison to both untreated control and fosthiazate treatment. Soil applications of abamectin provided significant G. pallida control with LD50 and LD99.9 of 14.4 and 131.3 µg/mL, respectively. These results indicate the efficacy of abamectin to control G. pallida on potato crops and its potential use in organic agriculture or in an integrated pest management program.

Flooding to manage dodder (Cuscuta gronovii) and broad-leaved weed species in cranberry: An innovative use of a traditional strategy

2010 ◽  
Vol 25 (4) ◽  
pp. 257-262 ◽  
Author(s):  
Hilary A. Sandler ◽  
Joanne Mason
Keyword(s):  
Weed Management ◽  
Management Practices ◽  
Management Plan ◽  
Cultural Practice ◽  
Weed Species ◽  
Short Term ◽  
Poison Ivy ◽  
Flood Period ◽  
Summer Flood ◽  
Flooding Events

AbstractThe implementation of new uses for traditional cultural and pest management practices has been prompted by renewed interest in sustainable approaches for farming. The use of floods (for various durations) has been an inexpensive and historical cultural practice in cranberry (Vaccinium macrocarponAit.) horticulture. The onset of a serious economic crisis in the cranberry industry in 1999–2000 brought about an urgent need to find inexpensive methods of pest control that would allow growers to remain fiscally solvent. Initially, anecdotal evidence from several farms indicated that holding short-term spring floods suppressed dodder infestations. Based on these findings, a 2-year demonstration-style project was initiated in 2002 to determine the efficacy of short-term floods (24–48 h) for the management of dodder in cranberry in Massachusetts. The project was expanded to include evaluating a 10-day summer flood for control of broad-leaved weed species at one commercial cranberry farm. Species richness and diversity and percentage weed coverage were lower after the implementation of the 10-day flood period compared to pre-flood assessments. Weed species dead or not detected after the 10-day flood included ground nut, asters, narrow-leaved goldenrod, chokeberry and poison ivy. Comparison of paired sites (flooded and nonflooded bogs) indicated dodder stem dry weights were lower on flooded areas in three out of the seven locations in year 1. At two additional locations, the flooded bog had higher stem weights when paired with a historically low-infestation bog, which may have masked any dodder reduction from the flooding practice. In year 2, no differences in the number of germinated seedlings between any treatment pairs were noted. Data from a cranberry company representing 12% of the cranberry acreage in Massachusetts indicated a 65–89% reduction in pesticide use when short-term spring floods were implemented during 2001–2003 compared to the previous 3-year period. Short-term flooding may offer a sustainable option that can be integrated into the overall management plan for several problematic cranberry weed species, especially dodder. Additional research is warranted to further define the most effective environmental conditions needed and to validate the efficacy of short flooding events for effective cranberry weed management.

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