Tropical Root Crops

Rees, D.; Westby, A.; Tomlins, Keith I.; Oirschot, Q. van; Cheema, Muhammad U. A.; Cornelius, E. W.; Amjad, Muhammad

doi:10.1002/9781444354652.ch18

Cited by 9 publications

(9 citation statements)

References 63 publications

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“…Cassava is a traditional food security crop; it provides a high output of energy per hectare with minimal inputs. Due to its adaptability to water stress, marginally fertile lands, resistance to pest and diseases, flexible growth cycles and ability to be left in the ground without harvest for long periods, it is sometimes called a 'food bank' of the poor (Bokanga 1999;Lebot 2009;Rees et al 2012;Howeler et al 2013). El-Sharkawy (2007) listed various physiological characteristics of cassava which enables the crop to tolerate prolonged water deficit.…”

Section: Global Productionmentioning

confidence: 99%

“…In Ghana, large volumes of cassava reach consumers as fresh roots contributing to significant losses in the distribution and Cassava roots are inherently perishable; rapid PPD starts almost immediately after harvest. Among all starchy root crops, cassava has the shortest shelf life (2-7 days), due to a lack of endogenous dormancy and non-functionality as vegetative propagules (Bokanga 1999;Lebot 2009;Rees et al 2012). PPD poses a constraint as cassava is transforming from a rural staple (subsistence crop) to larger public consumption and industrial raw material, which results in increased distance between farm and processing facilities.…”

Section: Cassava Mosaic Disease (Cmd)mentioning

confidence: 99%

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Crops that feed the world: Production and improvement of cassava for food, feed, and industrial uses

2017

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Cassava (Manihot esculenta Crantz) is one of the oldest root and tuber crops, used by humans to produce food, feed and beverages. Currently, cassava is produced in more than 100 countries and fulfils the daily caloric demands of millions of people living in tropical America, Africa, and Asia. Its importance as a food security crop is high in Western, Central and Eastern Africa due to its ability to produce reasonable yields (~10 t/ha) in poor soils and with minimal inputs. Traditionally a famine reserve and a subsistence crop, the status of cassava is now evolving fast as a cash crop and as raw material in the production of starch (and starch based products), energy (bioethanol) and livestock feed in the major producing countries. Cassava leaves, which are rich in protein and beta-carotenoids, are also used as a vegetable and forage (fresh or dehydrated meal) in various parts of the world. In recent years, some of the problems in the production of cassava have been increasing infection with cassava mosaic disease (CMD), cassava brown streak disease (CBSD) and cassava bacterial blight (CBB). Inherent postharvest physiological disorder (PPD) and cyanogenic glycosides (CG) are some of the most prominent challenges for scientists, producers and consumers in the post-production systems. Collaborative research in participatory plant breeding is ongoing at leading international research institutes such as IITA and CIAT to improve crop resistance to virus diseases, reduce PPD and CG, and improve the overall nutritional characteristics. Further research should also focus on post-production systems by developing enhanced storage and transportation techniques, mechanisation (peeling, size reduction, drying and dewatering) and improved packaging. Moreover, a robust national policy, market development, and dissemination and extension program are required to realise the full potential of innovations and technologies in cassava production and processing.

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Section: Global Productionmentioning

confidence: 99%

Section: Cassava Mosaic Disease (Cmd)mentioning

confidence: 99%

Crops that feed the world: Production and improvement of cassava for food, feed, and industrial uses

2017

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“…To achieve these goals, the project considers the potential for reducing losses through appropriate variety selection and postharvest technologies, including improved storage structures, curing, sprout control, and, in selected regions, yam preservation/processing. Optimum curing conditions were determined in controlled studies on-station, where a 50% reduction in the rate of loss was demonstrated (Rees et al, 2012). Dormancy break and sprouting are one of the most critical constraints to yam storage for long periods above 3 months after harvesting.…”

Section: Description Of Intervention Optionsmentioning

confidence: 99%

“…This is due to tuber weight loss associated with sprout growth and their susceptibility to rotting. Practices of sprout removal/control aimed at reducing losses have been attempted in the project with limited success (Rees et al, 2012). Treatment with gibberellic acid was found to reduce losses due to sprouting (from 44% to 14%; or a 67% reduction) for four varieties at 8 weeks' storage.…”

Section: Description Of Intervention Optionsmentioning

confidence: 99%

Potential returns to yam research investment in sub-Saharan Africa and beyond

et al. 2020

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Lack of good-quality planting materials has been identified as the most severe problem militating against increased agricultural productivity in sub-Saharan Africa (SSA) and beyond. However, investment of research efforts and resources in addressing this menace will only be feasible and worthwhile if attendant economic gains are considerable. As a way of investigating the economic viability of yam investment, this research has been initiated to address problems confronting yam productivity in eight countries of SSA and beyond: Nigeria, Ghana, Benin, Togo, Côte d’Ivoire, Papua New Guinea, Jamaica, and Columbia. Research options developed were to be deployed and disseminated. Key technologies include the adaptive yam minisett technique (AYMT), varieties adapted to low soil fertility and drought, nematode-resistant cultivars (NRC), and crop management and postharvest practices (CMPP). This article aims at estimating the potential economic returns, the expected number of beneficiaries, and poverty reduction consequent to the adoption of technology options. Estimates show that the new land area that will be covered by the technologies in the eight countries will range between 770,000 ha and 1,000,000 ha with the highest quota accounted for by AYMT. The net present value will range between US$584 and US$1392 million and was highest for the NRC. The CMPP had the lowest benefit-cost ratio of 7.74. About 1,049,000 people would be moved out of poverty by these technologies by 2037 in the region. These technologies are less responsive to changes in cost than that in adoption rate. Therefore, the realization of the potential economic gains depends on the rate and extent of adoption of these technologies. Giving the knowledge-intensive nature of some of these interventions, capacity building of potential adopters will be critical to increasing the sustainability of the yam sector, thereby enhancing food security and reducing poverty.

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“…Environment Conservation Journal c. Pits: Pits are trenches in which a cavity is dug. These dug holes or cavities are lined with cut grass, wood shreds, sand, stubble, or soil (Figure 1) (Rees et al, 2012). They are prepared at the boundaries of the field and at an elevated point where there is a chance of less rainfall accumulation in the cultivated field (El-Ramady et al, 2015).…”

mentioning

confidence: 99%

Storage structures for horticultural crops: a review

Kaur¹,

Aslam

Panayampadan³

2021

ECJ

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Most of the horticultural crops are seasonal, having a relatively short harvesting season, and most of them are highly perishable. Hence, proper storage of the horticultural crops using appropriate methods would prolong their availability. The present article gives details about various storage structures classified into two categories, i.e., traditional storage/low-cost storage technologies and improved methods/ modern methods /high-cost storage technologies. Traditional storage structures can be beneficial for farmers needing a small-scale storage system. These systems include in-situ storage, sand and coir, clamps, pits, cellars, ventilated storage, and evaporative cooling. On the other hand, modern methods include refrigerated storages like cold storages, environment-controlled storage (controlled atmospheric storage), modified atmosphere storage, and hypobaric storage. All the storage methods are equally important and can provide high revenue to the farmers and food industries.

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Tropical Root Crops

Cited by 9 publications

References 63 publications

Crops that feed the world: Production and improvement of cassava for food, feed, and industrial uses

Crops that feed the world: Production and improvement of cassava for food, feed, and industrial uses

Potential returns to yam research investment in sub-Saharan Africa and beyond

Storage structures for horticultural crops: a review

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