Farmer Experimentation as a Basis for Cropping Systems Research: A Case Study Involving True Potato Seed

1992 ◽  
Vol 28 (1) ◽  
pp. 19-29 ◽  
Author(s):  
M. J. Potts ◽  
Greta A. Watson ◽  
R. Sinung-Basuki ◽  
N. Gunadi
Keyword(s):  
Technology Development ◽  
Cropping Systems ◽  
Potato Production ◽  
Farming System ◽  
Potato Seed ◽  
True Potato Seed ◽  
Systems Research ◽  
Wide Range

SummaryThe radical concept of potato production from true potato seed (TPS) was adopted as a component of their farming system within three seasons by 23 farmers from Cibodas, West Java. The farmers showed an ability to conceptualize and experiment and desired concepts from which they could develop, through research, appropriate principles and field techniques. Information received solely as detailed practices or techniques hindered their progress, since they first needed to repeat the technique in order to understand the concepts and principles involved. Farmer experimentation resembled closely that of experimental station researchers, with the use of replication in space, often neighbouring farmers' plots, and time. Initial experiments covered a wide range of factors but within three seasons farmers had identified similar areas of concern which coincided with those of experiment station researchers worldwide. Farmer experimentation and the role of the researcher in this methodology for technology development are discussed.

On-farm Development of Potato Production from True Seed in Indonesia

1992 ◽  
Vol 28 (1) ◽  
pp. 31-39 ◽  
Author(s):  
N. Gunadi ◽  
M. J. Potts ◽  
R. Sinung-Basuki ◽  
Greta A. Watson
Keyword(s):  
Production Systems ◽  
Potato Production ◽  
Production Costs ◽  
Potato Seed ◽  
True Potato Seed ◽  
Yield Difference ◽  
Tuber Crop ◽  
On Farm ◽  
Comparable Quality ◽  
Better Than

SummaryThree seasons of on-farm experimentation to develop potato production from botanical or true potato seed (TPS) under cool fertile conditions in West Java, Indonesia, are described. Twenty-three farmers experimented with two production systems: use of transplants, and use of seedling tubers produced in nursery beds. There was little yield difference between the systems, but an apparent progeny × system × season interaction was observed. All progenies were more resistant to late blight than the present cultivars grown from tubers. Appropriate matching of progeny and system gave seed of comparable quality with, but total yields slightly less than, certified imported seed of cv. Granola. Ware quality was slightly better than that of cv. Granola. Production costs were markedly less than for a tuber crop, making TPS ideal for small, resource-poor farmers.

Co-Constructing a Learning Community

2011 ◽  
Vol 1 (1) ◽  
pp. 39-49 ◽  
Author(s):  
Chris Robertson
Keyword(s):  
Learning Community ◽  
Community Of Practice ◽  
Occupational Therapists ◽  
Children And Families ◽  
Vulnerable Children ◽  
Wide Range ◽  
Common Understanding ◽  
Country Specific

This paper explores the development of professional understanding across a large group of professionals and academics from eight different countries engaged in an international project. The focus of the project was to develop a suite of appropriate electronic tools to support the wide range of professionals (doctors, teachers, care and family workers, psychologists and medical and occupational therapists) who may be involved in working with and providing support for vulnerable children and families, which would be relevant across European countries. This case study explores how effective communication developed between the members of the research group to enable greater common understanding of both cultural and country specific provision, needs, and the underpinning philosophy and principles behind current provision in different countries represented. It explores the role of a ‘learning community’ and a ‘community of practice’ (Lave & Wenger, 1998) in this process as a tool for developing understanding. It provides insights into related issues, and possible future lessons to be learnt.

scholarly journals The digital transformation of the healthcare industry: exploring the rise of emerging platform ecosystems and their influence on the role of patients

2020 ◽  
Vol 13 (3) ◽  
pp. 1033-1069
Author(s):  
Sebastian Hermes ◽  
Tobias Riasanow ◽  
Eric K. Clemons ◽  
Markus Böhm ◽  
Helmut Krcmar
Keyword(s):  
Digital Health ◽  
Academic Research ◽  
Digital Transformation ◽  
Healthcare Industry ◽  
Value Capture ◽  
Digital Platforms ◽  
Systems Research ◽  
Wide Range ◽  
Platform Ecosystems

AbstractWhile traditional organizations create value within the boundaries of their firm or supply chain, digital platforms leverage and orchestrate a platform-mediated ecosystem to create and co-create value with a much wider array of partners and actors. Although the change to two-sided markets and their generalization to platform ecosystems have been adopted among various industries, both academic research and industry adoption have lagged behind in the healthcare industry. To the best of our knowledge current Information Systems research has not yet incorporated an interorganizational perspective of the digital transformation of healthcare. This neglects a wide range of emerging changes, including changing segmentation of industry market participants, changing patient segments, changing patient roles as decision makers, and their interaction in patient care. This study therefore investigates the digital transformation of the healthcare industry by analyzing 1830 healthcare organizations found on Crunchbase. We derived a generic value ecosystem of the digital healthcare industry and validated our findings with industry experts from the traditional and the start-up healthcare domains. The results indicate 8 new roles within healthcare, namely: information platforms, data collection technology, market intermediaries, services for remote and on-demand healthcare, augmented and virtual reality provider, blockchain-based PHR, cloud service provider, and intelligent data analysis for healthcare provider. Our results further illustrate how these roles transform value proposition, value capture, and value delivery in the healthcare industry. We discuss competition between new entrants and incumbents and elaborate how digital health innovations contribute to the changing role of patients.

scholarly journals Monitoring of verbal-linguistic development of pre-school children in Elementary school - RECEPTION project

2019 ◽  
Author(s):  
Ines Kruselj-Vidas
Keyword(s):  
School Library ◽  
Case Study Research ◽  
Literacy Skills ◽  
School Level ◽  
School Librarian ◽  
School Librarians ◽  
Childhood Education ◽  
Wide Range

The list of multiple tasks expected from a school librarian include a wide range of activities. Activity of crucial importance is advocating and argumentation how important is the development of basic literacy skills. The role of school librarians is unavoidable in this process. This presentation will show an example of school library practice and focus on the role of school librarian as designer, provider and researcher in the case study research at the school level. This research was done as an activity during international Erasmus+ project called RECEPTION (Role of Early Childhood Education in positive Transition/Introduction Outcomes for New pupils). 

An assessment of contract farming system for potato seed production in Punjab-A case study

2017 ◽  
Vol 74 (3) ◽  
pp. 453
Author(s):  
P. Kharumnuid ◽  
Sujit Sarkar ◽  
Premlata Singh ◽  
Satya Priya ◽  
B.S. Tomar ◽  
...  
Keyword(s):  
Seed Production ◽  
Farming System ◽  
Potato Seed ◽  
Contract Farming

scholarly journals Transmission Efficiency of Potato virus Y strains PVYO and PVYN-Wi by Five Aphid Species

Plant Disease ◽  
2011 ◽  
Vol 95 (10) ◽  
pp. 1279-1283 ◽  
Author(s):  
A. F. S. Mello ◽  
R. A. Olarte ◽  
S. M. Gray ◽  
K. L. Perry
Keyword(s):  
Potato Virus ◽  
Potato Virus Y ◽  
Rhopalosiphum Padi ◽  
Potato Production ◽  
Aphid Transmission ◽  
Transmission Efficiency ◽  
Aphid Species ◽  
Age And Growth ◽  
Potato Seed ◽  
True Potato Seed

Potato virus Y (PVY) is a reemerging problem in potato production in North America. Although the “ordinary” strain, PVYO, is still the dominant isolate in U.S. seed potatoes, the recombinant strain of the virus PVYN-Wi (= PVYN:O) has become widespread. An increase in the prevalence of a PVY strain could be due to differences in the efficiency of transmission by aphid vectors. The transmission efficiency by a clone of Myzus persicae was determined for five isolates each of PVYO and PVYN-Wi. An aphid transmission assay was developed based on the use of potato seedlings from true potato seed, allowing for greater control of plant age and growth stage. No apparent differences in transmission by M. persicae were observed. Single isolates of PVYO and PVYN-Wi were tested for their ability to be transmitted from potato to potato by five aphid species: Aphis glycines, A. gossypii, A. nasturtii, M. persicae, and Rhopalosiphum padi. Both PVY isolates showed a similar transmission phenotype in being transmitted efficiently by M. persicae but very poorly or not at all by A. glycines, A. gossypii, and R. padi. The aphid A. nasturtii transmitted both isolates with an intermediate level of efficiency. The data do not support a model for a differential aphid transmissibility being responsible for the increase in the prevalence of PVYN-Wi.

scholarly journals 237 Islands of memory, islands of trauma: The case of Dongzhou, Hengyang, China

2020 ◽  
Vol 15 (2) ◽  
pp. 237-254
Author(s):  
Gang Hong
Keyword(s):  
Media Analysis ◽  
Uneven Development ◽  
Cultural Trauma ◽  
Small Island ◽  
Structured Interviews ◽  
Place Memory ◽  
Wide Range ◽  
Practical Implications

This paper examines the complex interaction between island histories and island geographies by presenting a case study of Dongzhou Island, Hengyang, China, contextualized through several critical island events. Employing a wide range of methods including archival research, textual and media analysis, field and map observations, semi-structured interviews, and informal interaction, the research is broadly framed in the problematic of geographical memory consisting of hard island memory, soft island memory, and lived island memory. Particular attention is paid to the construction of Dongzhou Island’s cultural trauma based on three difficult island histories: mass killing, radical planning, and uneven development. Findings indicate that these memories coexist on or about the island, in virtual isolation from each other. It is argued that while hard memory constructs the island as a petrified landmark, soft memories murmur about the forgotten or obscured pains of a small island that bears witness to the violence of war and progress. The theoretical and practical implications regarding the role of place memory in rejuvenating local cultures are also proposed.

Evaluation of a new cropping option using a participatory approach with on-farm monitoring and simulation: a case study of spring-sown mungbeans

2000 ◽  
Vol 51 (1) ◽  
pp. 1 ◽  
Author(s):  
M. J. Robertson ◽  
P. S. Carberry ◽  
M. Lucy
Keyword(s):  
Soil Water ◽  
Cropping Systems ◽  
Farming System ◽  
Research Approach ◽  
Winter Cereal ◽  
And Performance ◽  
Systems Simulation ◽  
On Farm ◽  
Winter Fallow

In the northern Australian cropping region, mungbean is commonly sown as an opportunity crop, usually on low soil water after a winter cereal, and consequently has a reputation for being a low yielding, high risk crop. Yield prospects could be improved and risks reduced if it was sown on soils with a higher soil water content, for instance in spring after a winter fallow. However, there is a lack of experience and confidence in alternative roles for mungbean in the farming system. This paper describes a research approach involving researchers, farmers, advisers, and grain traders in which on-farm monitoring of spring-sown commercial crops and cropping systems simulation with APSIM were used to explore yield prospects for a spring-sown crop after a winter fallow. The key elements of the approach are: (1) identification of possible options through simulation of scenarios, (2) testing the new practice with innovative farmers, and (3) monitoring of the management and performance of commercial crops and comparing yields with benchmarks estimated with a model. In this case, after 2 years of on-farm testing, spring-sown mungbean has been shown to have a potential for high returns in the northern cropping systems.

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