Variation of Mineral Micronutrient Elements in Robusta Coffee (Coffea canephora Pierre ex A. Froehner) As Measured by Energy Dispersive X -Ray Fluorescence

Ngugi, Kahiu; Aluka, P.; Maina, D. M.

doi:10.9734/arrb/2016/23068

Cited by 5 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…soil Mg, but decreased with the increase in the levels of soil total N. A study by Kilambo et al (2015) reported positive correlation between cup quality and some soil parameters (Ca, Mg, and K), and they also reported that soils with excessive calcium and potassium produce coffees with hard and bitter tasting liquor. A study by Ngugi et al (2016) showed that Mn and Zn were important elements in the determination of organoleptic cup quality in Robusta coffee. Results also revealed that the biochemical contents of wild Arabica green coffee beans were also influenced by soil properties.…”

Section: Influence Of Soil Characteristicsmentioning

confidence: 99%

The major factors influencing coffee quality in Ethiopia: The case of wild Arabica coffee (Coffea arabica L.) from its natural habitat of southwest and southeast afromontane rainforests

Yadessa¹,

Burkhardt²,

Bekele³

et al. 2020

Afr. J. Plant Sci.

View full text Add to dashboard Cite

Coffee quality is a complex trait involving sensory and bean characteristics as well as biochemical contents. The objective of this study was to assess the major factors influencing the quality of wild Arabica coffee (Coffea arabica L.) in the natural coffee forests of southwest and southeast Ethiopia. Results revealed that both natural (soil, aspect, elevation, climate, geographic location) and human factors (cherry harvesting/ handing, theft, forest management) considerably influenced the quality of wild Arabica coffee. The soil factor affected every component of coffee quality (cup quality, bean characteristics and biochemical contents). The cup quality of coffee varied with soil properties, especially with available P and soil texture. The bean size distribution was also affected by soil properties; there was significant positive relationship between soil pH, sand or Mn and the proportion of bold beans (retained on screen 17). Soil organic matter, total N and sand content were inversely correlated with caffeine content, but available P and clay content were positively correlated with caffeine. Increase in elevation led to increase in bean size up to the elevation of about 1600 m above sea level, but thereafter no more increase in bean size (hump-shaped relationship, not monotonic). Bean size increased with increase in longitude, but it decreased with increase in latitude. Cup quality was also significantly influenced by coffee harvesting and handling, but its influence was not noticed on bean size and biochemical contents. Coffee quality is therefore the resultant of an interaction of different natural and human factors prevailing in the respective area.

show abstract

Section: Influence Of Soil Characteristicsmentioning

confidence: 99%

The major factors influencing coffee quality in Ethiopia: The case of wild Arabica coffee (Coffea arabica L.) from its natural habitat of southwest and southeast afromontane rainforests

Yadessa¹,

Burkhardt²,

Bekele³

et al. 2020

Afr. J. Plant Sci.

View full text Add to dashboard Cite

show abstract

“…A study by Yadessa et al (2008) revealed that higher levels of soil Mg, Mn and Zn were associated with improved coffee aroma in Ethiopia. A study in Uganda by Ngugi et al (2016) showed that Mn and Zn were important elements in the determination of organoleptic cup quality in Robusta coffee. A study in Brazil by Clemente et al (2015) showed that the relative proportion of nitrogen and potassium (N:K ratio) was found to be important factor in cup quality, which is in contrast with the findings of the present study (Table 3).…”

Section: Discussionmentioning

confidence: 99%

The role of soil nutrient ratios in coffee quality: Their influence on bean size and cup quality in the natural coffee forest ecosystems of Ethiopia

Yadessa¹,

Burkhardt²,

Bekele³

et al. 2019

Afr. J. Agric. Res.

View full text Add to dashboard Cite

Nutrients are essential for plant growth and development, and soil nutrient ratios play key roles in coffee quality. The objective of this study was to investigate the influence of soil nutrient ratios on the quality of wild Arabica coffee in Ethiopia. Results revealed that the balance between the soil nutrients was well correlated with coffee quality attributes. The balance between magnesium and calcium (Mg:Ca) and the balance between nitrogen and phosphorus (N:P) were found to be very important factors for bean size. Increase in Ca relative to Mg increased bean size, and vice versa. The higher the concentration of available P in relation to soil organic carbon (P:C) or total N (P:N), the better the cup quality of the coffee, and vice versa. The Mg:K ratio, P:N ratio, P:C ratio and P:Zn ratio were very important factors for cup quality. Although the ratio between Mg and K was important for cup quality, it was not apparent for bean size. The ratio between Ca and Mg was of no or little importance for coffee cup quality as opposed to that of bean size. Therefore, coffee growers should make careful decisions depending on the demands of the buyers/consumers and environmental requirements.

show abstract

“…Traditional or indigenous terms are synonymously used in literature to include crops such as sorghum (Sorghum bicolor), pearl millet (Pennisetum glaucum), cassava (Manihot esculenta), sweet potatoes (Ipomoea batatas), nightshades (Solanum spp), marula (Sclerocarya birrea), and Bambara groundnut (Vigna subterranean), among others. The crops have dense macro-and micronutrients content (Mibei et al, 2016;Ngugi et al, 2016;Ontita et al, 2016;Ali et al, 2021); can effectively provide solutions to the double malnutrition challenge experienced on the African continent, and proponents have recommended the need to intensify research on traditional crops. However, research has put more focus on crops such as maize, wheat and rice (Mondo et al, 2018;Mwizerwa et al, 2018;Gitari et al, 2019;Odingo, 2019;Owade et al, 2019;Ichami et al, 2020;Jekayinoluwa et al, 2020;Mukami et al, 2020;Malavi et al, 2021;Wagaba et al, 2021).…”

Section: Background Informationmentioning

confidence: 99%

New Challenges and Future Perspectives in Nutrition and Sustainable Diets in Africa

2024

Frontiers Research Topics

View full text Add to dashboard Cite

Frontiers is more than just an open access publisher of scholarly articles: it is a pioneering approach to the world of academia, radically improving the way scholarly research is managed. The grand vision of Frontiers is a world where all people have an equal opportunity to seek, share and generate knowledge. Frontiers provides immediate and permanent online open access to all its publications, but this alone is not enough to realize our grand goals. Frontiers journal seriesThe Frontiers journal series is a multi-tier and interdisciplinary set of openaccess, online journals, promising a paradigm shift from the current review, selection and dissemination processes in academic publishing. All Frontiers journals are driven by researchers for researchers; therefore, they constitute a service to the scholarly community. At the same time, the Frontiers journal series operates on a revolutionary invention, the tiered publishing system, initially addressing specific communities of scholars, and gradually climbing up to broader public understanding, thus serving the interests of the lay society, too. Dedication to qualityEach Frontiers article is a landmark of the highest quality, thanks to genuinely collaborative interactions between authors and review editors, who include some of the world's best academicians. Research must be certified by peers before entering a stream of knowledge that may eventually reach the public -and shape society; therefore, Frontiers only applies the most rigorous and unbiased reviews. Frontiers revolutionizes research publishing by freely delivering the most outstanding research, evaluated with no bias from both the academic and social point of view. By applying the most advanced information technologies, Frontiers is catapulting scholarly publishing into a new generation. What are Frontiers Research Topics?Frontiers Research Topics are very popular trademarks of the Frontiers journals series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area.

show abstract

Variation of Mineral Micronutrient Elements in Robusta Coffee (Coffea canephora Pierre ex A. Froehner) As Measured by Energy Dispersive X -Ray Fluorescence

Cited by 5 publications

References 0 publications

The major factors influencing coffee quality in Ethiopia: The case of wild Arabica coffee (Coffea arabica L.) from its natural habitat of southwest and southeast afromontane rainforests

The major factors influencing coffee quality in Ethiopia: The case of wild Arabica coffee (Coffea arabica L.) from its natural habitat of southwest and southeast afromontane rainforests

The role of soil nutrient ratios in coffee quality: Their influence on bean size and cup quality in the natural coffee forest ecosystems of Ethiopia

New Challenges and Future Perspectives in Nutrition and Sustainable Diets in Africa

Contact Info

Product

Resources

About