The Storage of Tropical Root and Tuber Cropscassava, Yam and Edible Aroids

1988 ◽  
Vol 24 (4) ◽  
pp. 457-470 ◽  
Author(s):  
R. D. Cooke ◽  
J. E. Rickard ◽  
A. K. Thompson
Keyword(s):  
Developing Countries ◽  
Food Supply ◽  
Manihot Esculenta ◽  
Genetic Improvement ◽  
Research Effort ◽  
Post Harvest ◽  
Root Crops ◽  
Production Technologies ◽  
Edible Aroids ◽  
Tuber Crops

SummaryRoot and tuber crops make a major contribution to the food supply in many developing countries. Most of the relatively limited research effort on tropical root crops has focussed on improved production technologies, especially with regard to genetic improvement. Interest in post-harvest technologies and crop use has increased recently with the growing recognition of their importance in the marketing of these perishable crops. This paper reviews recent advances in storage research for three of the principal root crops: cassava (Manihot esculenta C), yam (Dioscorea spp.) and the edible aroids (Colocasia spp.).R. D. Cooke, J. E. Rickard y A. K. Thompson: El almacenamiento de tubérculos tropicales - mandioca, ôame y aráceas comestibles.

scholarly journals Food waste within food supply chains: quantification and potential for change to 2050

2010 ◽  
Vol 365 (1554) ◽  
pp. 3065-3081 ◽  
Author(s):  
Julian Parfitt ◽  
Mark Barthel ◽  
Sarah Macnaughton
Keyword(s):  
Developing Countries ◽  
Supply Chains ◽  
Food Waste ◽  
Food Supply ◽  
Developing Economies ◽  
Rapid Development ◽  
Behavioural Change ◽  
Post Harvest ◽  
Food Supply Chains ◽  
Post Harvest Loss

Food waste in the global food supply chain is reviewed in relation to the prospects for feeding a population of nine billion by 2050. Different definitions of food waste with respect to the complexities of food supply chains (FSCs)are discussed. An international literature review found a dearth of data on food waste and estimates varied widely; those for post-harvest losses of grain in developing countries might be overestimated. As much of the post-harvest loss data for developing countries was collected over 30 years ago, current global losses cannot be quantified. A significant gap exists in the understanding of the food waste implications of the rapid development of ‘BRIC’ economies. The limited data suggest that losses are much higher at the immediate post-harvest stages in developing countries and higher for perishable foods across industrialized and developing economies alike. For affluent economies, post-consumer food waste accounts for the greatest overall losses. To supplement the fragmentary picture and to gain a forward view, interviews were conducted with international FSC experts. The analyses highlighted the scale of the problem, the scope for improved system efficiencies and the challenges of affecting behavioural change to reduce post-consumer waste in affluent populations.

scholarly journals Automated Line for Post-Harvest Processing of Root Crops and Potatoes

2020 ◽  
Vol 14 (1) ◽  
pp. 22-26
Author(s):  
A. S. Dorokhov ◽  
M. A. Mosyakov ◽  
N. V. Sazonov
Keyword(s):  
Block Diagram ◽  
Basic Block ◽  
Potato Tubers ◽  
Labor Costs ◽  
System Operation ◽  
Line System ◽  
Post Harvest ◽  
Root Crops ◽  
Automated Line

In the process of post-harvest processing of root crops and potatoes in Russia, mechanical sortings of various types are used, which allows to separate the material according to the size criterion and removing impurities. The main requirement for this equipment is to ensure the quality and reliability of technological processes for the impurities separation and the root crops separation into fractions with minimal damage. (Research purpose) To improve the quality of potato tubers sorting using an automated line for post-harvest processing of root crops and potatoes, which allows to reduce their damage and ensure high accuracy of separation into fractions by size. (Materials and methods) The authors studied the automated process of root crops post-harvest processing. They developed approaches and basic technical, technological and constructive solutions aimed at improving the efficiency of root crops and potatoes post-harvest processing. To automate the root crops and potatoes processing, the authors installed the universal web camera Logitech HD Pro C920. They created a basic block diagram of the electronic line system operation. (Results and discussion) The authors clarified the size and mass characteristics of potato tubers with a total weight of 38 356 grams of Nevsky variety of the 2019 harvest and their shape coefficient. They developed design documentation. An experimental line was prepared for potato tubers post-harvest sorting with an original circuit diagram of the electronic system operation. The authors substantiated its design and operational-technological parameters. Practical studies of the automated line work were carried out in the Ryazan region on the basis of the Institute of Seed Production and Agrotechnologies – a branch of the Federal Scientific Agroengineering Center VIM. (Conclusions) The authors determined that the developed automated line for root crops and potatoes post-harvest sorting thanks to digital technologies reduced labor costs by eliminating manual sorting, as well as improving the quality of potato tubers and the accuracy of sorting by size to 95-98 percent. It was revealed that damage to potato tubers did not exceed one percent.

Evaluating Transportation Needs in a Developing Country: The Case of Montego Bay Free-Zone Employees

1996 ◽  
Vol 1563 (1) ◽  
pp. 26-34
Author(s):  
Arlene R.-M. Willis
Keyword(s):  
Developing Countries ◽  
Public Transportation ◽  
Research Effort ◽  
Net Income ◽  
Cost Information ◽  
Private Companies ◽  
Free Zone ◽  
Zone Management ◽  
Transportation Service ◽  
Automobile Use

A research effort was undertaken to develop a methodology for evaluating the transportation needs of developing countries. Described are a survey and preliminary findings used to make recommendations to meet the transportation needs of almost 5,000 employees at a major employment center in the Caribbean. In the Montego Bay free zone in Jamaica, mediocre public transportation service is the leading cause of high rates of absenteeism and tardiness and a primary reason that 1,000 job vacancies remain unfilled. Private companies seeking solutions to these employment problems with minimal government involvement initiated the research. The survey was conducted in summer 1994 through personal interviews and self-administered questionnaires distributed to free-zone management and employees and public transportation drivers. Findings indicated a 20 percent net income-to-travel expense ratio, 1.5-hr-long waits, and almost no bicycle or private automobile use. The survey also gathered public opinions and possible solutions. To support more efficient transportation planning for developing countries, it is recommended that a data base that houses reliable and relevant cost information be developed along with other data to be used in determining the potential of improved transportation service to attract workers and stimulate economic growth in the region.

Root-surface mycoflora of cassava (Manihot esculenta) and post harvest rot of the tubers

1980 ◽  
Vol 71 (2) ◽  
pp. 67-71 ◽  
Author(s):  
F. E. O. Ikediugwu ◽  
Angela U. Ejale
Keyword(s):  
Manihot Esculenta ◽  
Root Surface ◽  
Post Harvest

Use of crop residues and agro-industrial by-products in ruminant production systems in developing countries

1993 ◽  
Vol 16 ◽  
pp. 47-55 ◽  
Author(s):  
M. C. N. Jayasuriya
Keyword(s):  
Developing Countries ◽  
Crop Residues ◽  
New Technologies ◽  
Production Systems ◽  
Smallholder Farmers ◽  
Research Effort ◽  
Mixed System ◽  
Crop Failure ◽  
Cropping Patterns ◽  
By Products

AbstractRuminant production systems in developing countries could be classified into three categories: the extensive systems, systems incorporating arable cropping and systems integrated with tree cropping. Systems have evolved in response to the agro-ecological environment, the availability and type of land, nature of cropping patterns, frequency and intensity of cropping, area of uncultivated land and animal species and animal numbers.Smallholder livestock farmers in most developing countries appear to have adopted a mixed system that incorporates the traditional extensive system and the system that combines arable cropping with livestock. Both in Africa and in Asia, livestock production is an important component of traditional agriculture, complementing arable cropping. Livestock utilize existing food resources such as communal grazing lands which are marginal for arable cropping, crop residues and agro-industrial by-products. Besides supplying meat and milk, organic manure and draft power, livestock are an investment and an insurance against crop failure.Crop residues and agro-industrial by-products are a major source of nutrients for ruminant livestock in developing countries, especially during periods of fodder shortage. Despite the large research effort on upgrading crop residues in recent years, there has been little improvement in the utilization of crop residues in developing countries. Reasons for this are many but include, the absence of detailed production patterns of crop residues within countries, including when and where they are produced, the difficulties of transporting and storing crop residues, inappropriate technology and the near absence of extension services.Both in the African and Asian continents, smallholder farmers who rear livestock for supplementary income are rather reluctant to change their traditional practices, when new technologies call for extra labour, time and capital, since the methods may be too demanding in relation to the benefit produced. The more likely application of any new technology will be with larger-scale operations where benefits are clearer and sufficiently large to warrant the extra efforts.

scholarly journals Green food supply chain design considering risk and post-harvest losses: a case study

2020 ◽  
Vol 295 (1) ◽  
pp. 257-284 ◽  
Author(s):  
D. G. Mogale ◽  
Sri Krishna Kumar ◽  
Manoj Kumar Tiwari
Keyword(s):  
Supply Chain ◽  
Food Supply ◽  
Supply Chain Design ◽  
Food Supply Chain ◽  
Post Harvest ◽  
Green Food

Benchmarking parties’ obligations in the execution of concession-based PPP projects in Nigeria

2016 ◽  
Vol 9 (1) ◽  
pp. 27-46 ◽  
Author(s):  
Akintayo Opawole ◽  
Godwin Onajite Jagboro
Keyword(s):  
Developing Countries ◽  
Research Effort ◽  
Third Party ◽  
Specific Context ◽  
Southwestern Nigeria ◽  
Public And Private ◽  
Content Type ◽  
The Public ◽  
Contractual Obligations ◽  
Public And Private Sector

Purpose Demand–supply matrices with adverse consequences has occasioned government response to concession initiatives in infrastructure in Nigeria. However, concession-based projects have been trailed by administrative and legal controversies. While this scenario has negatively impacted the acceptability of a concession contract, there is, nevertheless, a paucity of research effort aimed at developing a sustainable framework. The purpose of this paper is to develop a conceptual framework for the evaluation and allocation of obligations of parties, thereby enhancing the synergy and cooperation between the public and private sector organization. Design/methodology/approach Data were obtained through a questionnaire administered to professionals in concession-based contracts in southwestern Nigeria, which included architects, estate surveyors, quantity surveyors, engineers and builders, accountants/bankers/economists and lawyers. The respondents were selected using random and respondent driven sampling approaches. The questions were structured to ensure that the respondents have appropriate experience in concession-based projects and hold appropriate positions as decision-makers so as to give credence to the collected data. Findings The study identified 47 contractual obligations in the specific context of developing countries. Based on “half-adjusting principle”, 13 of the obligations notably cost of land acquisition and cost of social disturbances were allocated to the public party; 18 of the obligations notably project design and cost of feasibility study were allocated to the private party; and 16 of the obligations including preparation of terms of a contract and relocation of third party facilities were shared by the parties. Originality/value The framework benchmarked the categorization of public and private parties’ obligations in concession-based public–private partnership (PPP) contracts. The study has the implication for the evaluation and allocation of obligations of parties, which could mitigate the risk of failure of PPP projects in relation to the specific context of developing countries.

Sign in / Sign up

Export Citation Format

Share Document