Farmer Participatory Crop Improvement. I. Varietal Selection and Breeding Methods and Their Impact on Biodiversity

1996 ◽  
Vol 32 (4) ◽  
pp. 445-460 ◽  
Author(s):  
J. R. Witcombe ◽  
A. Joshi ◽  
K. D. Joshi ◽  
B. R. Sthapit
Keyword(s):  
Plant Breeding ◽  
Crop Improvement ◽  
Cost Effective ◽  
Participatory Plant Breeding ◽  
Participatory Varietal Selection ◽  
Farmer Participatory Research ◽  
Long Term Effect ◽  
Impact On Biodiversity ◽  
The Impact

SUMMARYFarmer participatory approaches for the identification or breeding of improved crop cultivars can be usefully categorized into participatory varietal selection (PVS) and participatory plant breeding (PPB). Various PVS and PPB methods are reviewed. PVS is a more rapid and cost-effective way of identifying farmer-preferred cultivars if a suitable choice of cultivars exists. If this is impossible, then the more resource-consuming PPB is required. PPB can use, as parents, cultivars that were identified in successful PVS programmes. Compared with conventional plant breeding, PPB is more likely to produce farmer-acceptable products, particularly for marginal environments. The impact of farmer participatory research on biodiversity is considered. The long-term effect of PVS is to increase biodiversity, but where indigenous variability is high it can also reduce it. PPB has a greater effect on increasing biodiversity although its impact may be limited to smaller areas. PPB can be a dynamic form of in situ genetic conservation.

Farmer Participatory Crop Improvement. I. Varietal Selection and Breeding Methods and Their Impact on Biodiversity

1996 ◽  
Vol 32 (4) ◽  
pp. 445-460 ◽  
Author(s):  
J. R. Witcombe ◽  
A. Joshi ◽  
K. D. Joshi ◽  
B. R. Sthapit
Keyword(s):  
Plant Breeding ◽  
Crop Improvement ◽  
Cost Effective ◽  
Participatory Plant Breeding ◽  
Participatory Varietal Selection ◽  
Farmer Participatory Research ◽  
Long Term Effect ◽  
Impact On Biodiversity ◽  
The Impact

SUMMARYFarmer participatory approaches for the identification or breeding of improved crop cultivars can be usefully categorized into participatory varietal selection (PVS) and participatory plant breeding (PPB). Various PVS and PPB methods are reviewed. PVS is a more rapid and cost-effective way of identifying farmer-preferred cultivars if a suitable choice of cultivars exists. If this is impossible, then the more resource-consuming PPB is required. PPB can use, as parents, cultivars that were identified in successful PVS programmes. Compared with conventional plant breeding, PPB is more likely to produce farmer-acceptable products, particularly for marginal environments. The impact of farmer participatory research on biodiversity is considered. The long-term effect of PVS is to increase biodiversity, but where indigenous variability is high it can also reduce it. PPB has a greater effect on increasing biodiversity although its impact may be limited to smaller areas. PPB can be a dynamic form of in situ genetic conservation.

PARTICIPATORY PLANT BREEDING IS BETTER DESCRIBED AS HIGHLY CLIENT-ORIENTED PLANT BREEDING. II. OPTIONAL FARMER COLLABORATION IN THE SEGREGATING GENERATIONS

2006 ◽  
Vol 42 (1) ◽  
pp. 79-90 ◽  
Author(s):  
J. R. WITCOMBE ◽  
S. GYAWALI ◽  
S. SUNWAR ◽  
B. R. STHAPIT ◽  
K. D. JOSHI
Keyword(s):  
Plant Breeding ◽  
Market Failure ◽  
Supply And Demand ◽  
Cost Effective ◽  
Participatory Plant Breeding ◽  
Participatory Varietal Selection ◽  
Breeding Research ◽  
Breeding Programmes ◽  
New Varieties ◽  
Cost Effective Alternative

Many public-sector breeding programmes do not use explicit techniques to orient their programmes close to their clients' needs. Participatory techniques can be used to achieve high client orientation but these techniques do not have to involve farmers making selections during the segregating generations. This particularly applies when a sound initial market survey has been made or the learning from a participatory varietal selection (PVS) programme provides feedback to scientists. However, some published results on selection by farmers in the segregating generations (collaborative selection) indicate that it can produce appropriate varieties more effectively than less collaborative research. There is also evidence, from the few cases reported in the literature, that it is cost-effective. Alternative, less collaborative, approaches are also effective. Consultative forms of farmer participation, i.e. where farmers evaluate material grown by scientists, to aid selection in the segregating generations are more widely applicable because they demand fewer resources than collaborative methods. For more time-consuming tasks, such as in the selection of aromatic rice in segregating material, the most appropriate from of participation is contractual i.e., farmers are paid for their work. Mainly using examples from our research in Nepal, we present the particular circumstances in which the involvement of farmers in selection in the segregating generations is desirable or essential. These include: the occurrence of market failure (where the usual mechanisms of supply and demand have failed so there is no incentive to breed new varieties) and supply can only be met by actively involving farmers in the breeding process; when there are cost advantages to involving farmers – this is determined by the particular resources available to the institute undertaking the plant breeding research; when grain quality is both important and determined by a complex set of factors that are difficult to measure in the laboratory; when the objective is to learn in more detail about farmers' selection criteria to better orient the breeding programme to client needs; and when the goal is to empower farmers.

scholarly journals Anti-meningococcal B vaccination in Italian adolescents: a cost-effective health opportunity

2020 ◽  
Vol 30 (Supplement_5) ◽  
Author(s):  
D Panatto ◽  
P Landa ◽  
D Amicizia ◽  
P L Lai ◽  
E Lecini ◽  
...  
Keyword(s):  
Large Scale ◽  
Public Health Problem ◽  
Vaccination Strategy ◽  
Cost Effective ◽  
Dose Schedule ◽  
Developed Countries ◽  
Invasive Disease ◽  
International Setting ◽  
The Impact

Abstract Background Invasive disease due to Neisseria meningitidis (Nm) is a serious public health problem even in developed countries, owing to its high lethality rate (8-15%) and the invalidating sequelae suffered by many (up to 60%) survivors. As the microorganism is transmitted via the airborne route, the only available weapon in the fight against Nm invasive disease is vaccination. Our aim was to carry out an HTA to evaluate the costs and benefits of anti-meningococcal B (MenB) vaccination with Trumenba® in adolescents in Italy, while also considering the impact of this new vaccination strategy on organizational and ethics aspects. Methods A lifetime Markov model was developed. MenB vaccination with the two-dose schedule of Trumenba® in adolescents was compared with 'non-vaccination'. Two perspectives were considered: the National Health Service (NHS) and society. Three disease phases were defined: acute, post-acute and long-term. Epidemiological, economic and health utilities data were taken from Italian and international literature. The analysis was conducted by means of Microsoft Excel 2010®. Results Our study indicated that vaccinating adolescents (11th year of life) with Trumenba® was cost-effective with an ICER = € 7,912/QALY from the NHS perspective and € 7,758/QALY from the perspective of society. Vaccinating adolescents reduces the number of cases of disease due to meningococcus B in one of the periods of highest incidence of the disease, resulting in significant economic and health savings. Conclusions This is the first study to evaluate the overall impact of free MenB vaccination in adolescents both in Italy and in the international setting. Although cases of invasive disease due to meningococcus B are few, if the overall impact of the disease is adequately considered, it becomes clear that including anti-meningococcal B vaccination into the immunization program for adolescents is strongly recommended from the health and economic standpoints. Key messages Free, large-scale MenB vaccination is key to strengthening the global fight against invasive meningococcal disease. Anti-meningococcal B vaccination in adolescents is a cost-effective health opportunity.

A cost-effectiveness analysis of social transfers on human capital accumulation

2021 ◽  
Vol 52 (207) ◽  
Author(s):  
Andrés Mideros
Keyword(s):  
Human Capital ◽  
Cost Effectiveness ◽  
Capital Accumulation ◽  
Cost Effective ◽  
Cash Transfers ◽  
Human Capital Accumulation ◽  
Effectiveness Analysis ◽  
Long Term Effect ◽  
Social Transfers

The paper reports on an ex-ante evaluation of the long-term effect of the Ecuadorian social transfer programme called “Bono de Desarrollo Humano (BDH)” on human capital accumulation. A dynamic cohort microsimulation model is used to analyse for cost-effectiveness of different policy scenarios. Results show that cash transfers do promotehuman capital accumulation but with rather small effect. Transfers targeted at critical ages are the most cost-effective to promote human capital accumulation

The Impact of the Reformation

2019 ◽  
pp. 40-61
Author(s):  
Martin Pugh
Keyword(s):  
Sixteenth Century ◽  
Protestant Reformation ◽  
Elizabeth I ◽  
Long Term Effect ◽  
Queen Elizabeth I ◽  
The Reformation ◽  
The Impact ◽  
European Diplomacy ◽  
Francis I

This chapter focuses on the Protestant Reformation of the sixteenth century. Following Henry VIII's break with Rome in 1531, the English Reformation led Britain into a protracted struggle with the two great Catholic powers, Spain and France, for the next 300 years. The long-term effect was to define Britain as the leading Protestant power; but more immediately, it posed a far greater threat to England than Islam, and effectively destroyed the rationale for crusading activities. In this situation, the Islamic empires actually became a valuable balancing factor in European diplomacy. Henry's readiness to deal with the Muslim powers was far from eccentric during the sixteenth century. Both King Francis I of France and Queen Elizabeth I of England took the policy of collaboration much further.

Online to Offline: The Impact of Social Media on Offline Sales in the Automobile Industry

2021 ◽  
Author(s):  
Yen-Yao Wang ◽  
Chenhui Guo ◽  
Anjana Susarla ◽  
Vallabh Sambamurthy
Keyword(s):  
Social Media ◽  
Automobile Industry ◽  
Durable Goods ◽  
Term Effect ◽  
Traditional Media ◽  
Long Term Effect ◽  
Light Vehicle ◽  
Dynamic Relationships ◽  
The Impact

This study examines the dynamic relationships between firm-generated content (FGC), user-generated content (UGC), traditional media, and offline light vehicle sales. Data were collected from the official Facebook and Twitter pages of 30 U.S. car brands from 2009 to 2015. Our results suggest that Facebook and Twitter are heterogeneous in terms of their effect on offline vehicle sales; FGC is more effective than UGC for influencing offline light vehicle sales; viral impressions from Facebook and Twitter are essential, although effects vary for the various social media platforms, FGC, and UGC; and a firm’s marketing efforts and UGC both have a long-term effect on sales, with the long-term effect of a firm’s marketing efforts outlasting that of UGC. We also documented the within-Twitter synergistic effect between FGC and UGC for offline car sales and cross-channel substitution relationships between FGC and both Facebook and traditional media and Twitter and traditional media. Our study implies that managers who attempt to maximize multichannel marketing for offline sales of durable goods should consider (1) the nature of each platform, (2) the number of potential audiences each platform can reach, and (3) the user basis of each platform.

scholarly journals The Impact of Education and Residential Environment on Long-Term Waste Management Behavior in the Context of Sustainability

2019 ◽  
Vol 11 (14) ◽  
pp. 3775 ◽  
Author(s):  
Andreea Simona Saseanu ◽  
Rodica-Manuela Gogonea ◽  
Simona Ioana Ghita ◽  
Radu Şerban Zaharia
Keyword(s):  
Rural Areas ◽  
Academic Staff ◽  
Demographic Factors ◽  
Education Level ◽  
Waste Reduction ◽  
Long Term Effect ◽  
Long Term Behavior ◽  
The Impact ◽  
Cointegration Relationship

Currently, the problem of waste reduction is a permanent concern for all countries of the world, given the need to ensure the sustainability development. In this context, the research aims to highlight the impact of education and demographic factors by residence areas on the long-term behavior of the amount of waste generated in 29 European countries during 2013–2017. The study is based on statistical and econometric modeling aimed at identifying, testing and analyzing the existence of long-term correlation between the amount of waste per capita recorded in each country and four factors of influence considered significant for waste reduction: Pupils and students by education level and Classroom teachers and academic staff by education level, representing exogenous variables which quantify the educational outcomes, as well as The population by degree of urbanization (cities, rural areas), as demographic factors. As a result of an analysis based on correlation and regression method, a cointegration relationship between the analyzed variables was identified. Considering the amount of waste as an important component of the environmental pressure, the obtained results show the significant long-term effect that education and the demographic factor can have on its long-lasting behavior, as well as the ways through which these factors can act to strengthen sustainability.

Long-term effect of rehabilitation in coronary artery disease patients: randomized clinical trial of the impact of exercise volume

2010 ◽  
Vol 24 (4) ◽  
pp. 319-327 ◽  
Author(s):  
Dominique Hansen ◽  
Paul Dendale ◽  
Anita Raskin ◽  
Annick Schoonis ◽  
Jan Berger ◽  
...  
Keyword(s):  
Coronary Artery Disease ◽  
Clinical Trial ◽  
Coronary Artery ◽  
Randomized Clinical Trial ◽  
Term Effect ◽  
Long Term Effect ◽  
Artery Disease ◽  
The Impact

MANAGING AN AGRICULTURAL RESEARCH PROGRAMME FOR POVERTY ALLEVIATION IN DEVELOPING COUNTRIES: AN INSTITUTE WITHOUT WALLS

2006 ◽  
Vol 42 (2) ◽  
pp. 127-146 ◽  
Author(s):  
C. M. STIRLING ◽  
D. HARRIS ◽  
J. R. WITCOMBE
Keyword(s):  
Developing Countries ◽  
Agricultural Research ◽  
Crop Improvement ◽  
Research Programme ◽  
Research Strategy ◽  
Phase Iii ◽  
Wide Range ◽  
Renewable Natural Resource ◽  
The Impact

There is no one widely accepted method of managing international agricultural research and numerous different models exist. Here we review one in particular, referred to as the ‘institute without walls’, from the perspective of the UK Department for International Development's (DFID) Renewable Natural Resource (RNR) Research Strategy (1990–2006). We begin with a brief history of the RNR Research Strategy from 1990 to 2004. We then draw on nearly 15 years experience of managing one of the programmes within the RNR Research Strategy to assess critically the impact of externally and internally imposed organizational and management changes on the performance of the DFID Plant Sciences Programme (PSP). The current RNR Research Strategy (1995–2006), with its emphasis on demand-led research, has greatly increased the relevance and effectiveness of DFID's natural resources research. A comparison between the PSP in 2004 and the early 1990s inevitably concludes that the programme has been transformed: unlike in 1991, research is now firmly demand-driven, much is based in developing countries and farmers are benefiting from the research. Over time, the outputs of the long-term strategic research have been applied in practical plant breeding and participatory crop improvement programmes. Key to the success of the PSP has been the provision of continuous, long-term funding which has allowed projects time to develop and produce outputs of real value to end users. Alongside this, the ability of the PSP to build long-term, in-country partnerships has ensured the effective adoption of its research outputs. We conclude that the successes of the PSP have largely derived from (i) identification of research that is clearly demand driven, (ii) continuous long-term funding that has allowed research to move from the strategic to adaptive phase, (iii) continuity of management, and (iv) the flexibility to develop a wide range of partnerships, both in-country and overseas, based on their ability to deliver.

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