scholarly journals Management of Economically Important Insect Pests of Millet

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Ruparao T Gahukar ◽  
Gadi V P Reddy

Abstract Grain of various species of millet is a staple food of rural communities in sub-Saharan Africa, the Indian subcontinent, and China. In addition, millet is used as poultry and cattle feed in the United States, and the foliage is fodder for cattle in India. The crop is damaged by at least 150 insect pests during its growth and development. Although the current status of all of these pests is not known, shoot flies, stem borers, leaf-sucking, and the panicle-attacking insects are considered economically important. Control measures include the application of synthetic pesticides (as both seed treatment and foliar applications) and cultural methods (timing of planting and field sanitation). Host plant resistance (screening of genotypes and breeding of pest-tolerant/resistant cultivars), and biological control (conservation of natural enemies and periodical releases of the larval parasitoid Habrobracon hebetor) have received much attention in recent years. Integrating available pest control options has been recommended, along with further adoption of new crop cultivation technologies by small and resource-poor farmers.

Author(s):  
Sean D. Moore

Thaumatotibia leucotreta, known as the false codling moth, is a pest of citrus and other crops in sub-Saharan Africa. As it is endemic to this region and as South Africa exports most of its citrus around the world, T. leucotreta has phytosanitary status for most markets. This means that there is zero tolerance for any infestation with live larvae in the market. Consequently, control measures prior to exporting must be exemplary. Certain markets require a standalone postharvest disinfestation treatment for T. leucotreta. However, the European Union accepts a systems approach, consisting of three measures and numerous components within these measures. Although effective preharvest control measures are important under all circumstances, they are most critical where a standalone postharvest disinfestation treatment is not applied, such as within a systems approach. Conventional wisdom may lead a belief that effective chemical control tools are imperative to achieve this end. However, we demonstrate that it is possible to effectively control T. leucotreta to a level acceptable for a phytosanitary market, using only biological control tools. This includes parasitoids, predators, microbial control, semiochemicals, and sterile insects. Simultaneously, on-farm and environmental safety is improved and compliance with the increasing stringency of chemical residue requirements imposed by markets is achieved.


Author(s):  
Rhoda Leask ◽  
Kenneth P. Pettey ◽  
Gareth F. Bath

Heartwater is a serious limiting factor for sheep and goat production in the major endemic area of sub-Saharan Africa and therefore most knowledge, research and control methods originate from this region. Whilst the usual or common clinical presentations can be used to make a presumptive diagnosis of heartwater with a good measure of confidence, this is not always the case, and animals suffering from heartwater may be misdiagnosed because their cases do not conform to the expected syndrome, signs and lesions. One aberrant form found occasionally in the Channel Island breeds of cattle and some goats is an afebrile heartwaterlike syndrome. The most constant and characteristic features of this heartwater-like syndrome comprise normal temperature, clinical signs associated with generalised oedema, and nervous signs, especially hypersensitivity. The presumption that the disease under investigation is the afebrile heartwater-like syndrome entails a tentative diagnosis based on history and clinical signs and the response to presumed appropriate treatment (metadiagnosis). The afebrile heartwater-like syndrome presents similarly to peracute heartwater but without the febrile reaction. Peracute cases of heartwater have a high mortality rate, enabling confirmation of the disease on post-mortem examination. Recognition of the afebrile heartwater-like syndrome is important to prevent deaths and identify the need for appropriate control measures.


2018 ◽  
Vol 92 ◽  
pp. S155 ◽  
Author(s):  
S. Grover ◽  
M. Narasimhamurthy ◽  
R. Bhatia ◽  
C. Benn ◽  
K. Fearnhead ◽  
...  

Author(s):  
A. J. Adeloye ◽  
F. D. Mwale ◽  
Z. Dulanya

Abstract. In response to the increasing frequency and economic damages of natural disasters globally, disaster risk management has evolved to incorporate risk assessments that are multi-dimensional, integrated and metric-based. This is to support knowledge-based decision making and hence sustainable risk reduction. In Malawi and most of Sub-Saharan Africa (SSA), however, flood risk studies remain focussed on understanding causation, impacts, perceptions and coping and adaptation measures. Using the IPCC Framework, this study has quantified and profiled risk to flooding of rural, subsistent communities in the Lower Shire Valley, Malawi. Flood risk was obtained by integrating hazard and vulnerability. Flood hazard was characterised in terms of flood depth and inundation area obtained through hydraulic modelling in the valley with Lisflood-FP, while the vulnerability was indexed through analysis of exposure, susceptibility and capacity that were linked to social, economic, environmental and physical perspectives. Data on these were collected through structured interviews of the communities. The implementation of the entire analysis within GIS enabled the visualisation of spatial variability in flood risk in the valley. The results show predominantly medium levels in hazardousness, vulnerability and risk. The vulnerability is dominated by a high to very high susceptibility. Economic and physical capacities tend to be predominantly low but social capacity is significantly high, resulting in overall medium levels of capacity-induced vulnerability. Exposure manifests as medium. The vulnerability and risk showed marginal spatial variability. The paper concludes with recommendations on how these outcomes could inform policy interventions in the Valley.


PEDIATRICS ◽  
1996 ◽  
Vol 98 (4) ◽  
pp. 796-796
Author(s):  
Samuel L. Katz

Drs Terry and Schneider raise legitimate questions regarding changes in polio immunization recommendations. In response to the former, although two doses of inactivated polio vaccine provide humoral immunity that will protect an individual against central nervous system invasion by wild or revertant attenuated polioviruses, they do not provide intestinal immunity, a valued asset of oral polio vaccine (OPV). Because we live in a global community where jet transportation enables one to move from a polio-endemic area to a polio-free area in less than one day, the introduction of wild polio viruses from sub-Saharan Africa or Southeast Asia poses a legitimate threat and concern to those who wish to maintain community protection, in addition to individual protection, against possible reintroduction of wild virus to the United States.


Author(s):  
Mesfin Wondafrash ◽  
Bernard Slippers ◽  
Birhane A Asfaw ◽  
Idea A Makowe ◽  
Herbert Jenya ◽  
...  

2021 ◽  
Vol 5 (Supplement_1) ◽  
pp. 420-421
Author(s):  
Andrew Banda ◽  
Norah Keating ◽  
Jaco Hoffman ◽  
Jose Parodi ◽  
Nereide Curreri

Abstract In their recent volume, Critical Rural Gerontology, Skinner et al (2021) challenge us to set aside unidimensional notions of rural communities as bypassed vs very supportive; and to identify the elements of rurality that empower or exclude older people and how these differ across cultures and settings. Covid-19 has highlighted the need for safe and inclusive communities. Given that LMIC will be home to the majority of older adults (Gonzales et al. 2015), we undertook a scoping review of features of rural communities that influence wellbeing of older people in countries across Latin America and Sub-Saharan Africa. The review included literature in English, French, Spanish and Portuguese, using search engines MEDLINE, CINAHL Complete, PsycInfo, SocINDEX, SciELO, AJOL (Africa Journals Online), LILACS, Redalyc, LatinIndex and Clacso. Findings illustrate diversity in how community features including remoteness, infrastructure and belonging influence material, social and subjective wellbeing of older residents.


2020 ◽  
pp. 135-164
Author(s):  
Dan Royles

This chapter describes the work of The Balm in Gilead, which grew out of the efforts of Pernessa Seele, an immunologist at Harlem Hospital, to organize local Black faith leaders to address AIDS through the Harlem Week of Prayer for the Healing of AIDS. As Seele trained African American clergy to incorporate AIDS education into their ministry, she also confronted entrenched homophobia in Black religious institutions. Accordingly, The Balm in Gilead designed programs that would help churches accept and include gay members. In 2001, Seele contracted with the Centers for Disease Control and Prevention to extend her work with Black churches to sub-Saharan Africa, setting up programs in Côte d’Ivoire, Kenya, Nigeria, Zimbabwe, and Tanzania. She argued that because of Black people’s particular relationship with church and faith, the approach that The Balm in Gilead had developed in the United States would work in Africa as well. At the same time, this work intersected with a growing interest in addressing “global AIDS” among U.S. leaders, including Presidents Bill Clinton and George W. Bush, who saw the spread of the disease in Africa as a growing threat to international security.


Author(s):  
Eleanor M. Fox ◽  
Mor Bakhoum

This chapter identifies four clusters of nations based on state of development, in order to highlight significant qualitative differences that may call for different law and policies. The first cluster comprises the least developed sub-Saharan African countries with the most resource-challenged competition authorities, such as Benin and Togo. The second cluster compromises nations that have advanced economically to a perceptibly higher level. The third cluster is a “group” of one—South Africa. With all of its challenges, the South African competition regime is as close to a gold standard as there is in sub-Saharan Africa. Finally, for comparison, the fourth cluster comprises the developed countries, led in particular by the European Union and the United States. These nations have open economies, fairly robust markets, good infrastructure, and good institutions. The chapter proceeds to identify, from the point of view of each of the clusters, the most fitting competition framework nationally and globally. The chapter proposes how the divergences can be brought into sympathy.


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