Mineral Nutrition and Fertiliser Needs

Willson, C. A.

doi:10.1007/978-1-4615-6657-1_6

Cited by 18 publications

(17 citation statements)

References 13 publications

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“…photosynthesis, absorption and transport of nutrients and photo-assimilates), but also coffee fruit development and consequently final coffee beverage quality (Amorim 1970). Potassium (K), which is highly accumulated in coffee pulp, is considered a key component of coffee quality (Willson 1985;Cong et al 2001). Silva et al (1999) observed high polyphenol oxidase activity and sugars in beans of good quality coming from coffee plants fertilized with potassium sulphate (K 2 SO 4 ).…”

Section: Introductionmentioning

confidence: 99%

Controlled irrigation and nitrogen, phosphorous and potassium fertilization affect the biochemical composition and quality of Arabica coffee beans

et al. 2016

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Controlled irrigation during the dry period associated with adequate nitrogen (N), phosphorous (P) and potassium (K) fertilization led to the accumulation of biochemical compounds in coffee beans considered as positive precursors of beverage quality. Adult plants of coffee (Coffea arabica 'Rubi') were cultivated using different water regimes (WR) and fertilization conditions under the dry climate of the Brazilian Cerrado. Coffee-bean physical characteristics were evaluated as well as biochemical composition by near-infrared analysis. The K treatment mostly affected bean biochemistry, lipid and chlorogenic acid (CGA) contents, which increased with increasing amounts of fertilizer. Caffeine contents increased with higher amounts of N, but no significant effects of P treatment on bean biochemical composition were observed. Sucrose and total lipid contents always appeared higher in beans of non-irrigated plants than those beans from plants grown with continuous irrigation. In contrast, caffeine and CGA contents were higher in beans of irrigated as compared with non-irrigated plants. For the first time, the current results showed that controlled management of irrigation during the dry period associated with reasonable NPK fertilization led to the accumulation of biochemical compounds in coffee beans considered as positive precursors of beverage quality. (Résumé d'auteur

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Section: Introductionmentioning

confidence: 99%

Controlled irrigation and nitrogen, phosphorous and potassium fertilization affect the biochemical composition and quality of Arabica coffee beans

et al. 2016

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“…A study by Oruko (1977), cited in Njoroge (1985) reported that excessive levels of K and Ca are believed to impair the quality of coffee beans, mainly as a result of imbalance with Mg. According to Willson (1985b), potassium and magnesium are antagonistic; that is, high levels of K in the soil or high K application can cause magnesium deficiency, and high Ca levels in the soil can restrict potassium uptake. A study by Laekemariam et al (2018) showed that K availability depends on exchangeable K and relative amounts of other cations, and hence soil exchangeable K values alone may not adequately indicate K availability in areas where soil exchangeable Mg concentration is relatively high enough to compete with exchangeable K and cause K deficiency.…”

Section: Discussionmentioning

confidence: 99%

“…Phosphorus is essential for root, flower bud and fruit development, and it plays an important role in energy storage and transfer in crop plants (Fageria, 2009). Calcium, magnesium and other major and micro nutrients are essential for a balanced nutrition of the coffee plant although the required quantities are usually small to minimal in coffee (Willson, 1985b;Mitchell, 1988). When plants are grown without adequate essential nutrients, characteristic deficiency symptoms result (Nagao et al, 1986).…”

Section: Introductionmentioning

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.

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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.

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“…Genú (1985), comparando o teor de Cu obtido em condição de pé-franco e enxertado em Citrus, verificou que determinados porta-enxertos levaram a acréscimos positivos de Cu nos enxertos, evidenciando a afinidade entre copa e porta-enxerto. (Willson, 1987). No entanto, a diminuição da absorção de Mn em plantas de C. canephora pode ter ocorrido por fatores ligados à seletividade de seu sistema radicular, não deixando que este micronutriente atinja concentrações prejudiciais à planta.…”

Section: Eficiência Nutricional Quanto Ao Cobreunclassified

Absorção, translocação e utilização de zinco, cobre e manganês por mudas enxertadas de Coffea arabica

Tomaz

Martínez

Sakiyama

et al. 2006

Rev. Bras. Ciênc. Solo

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Mineral Nutrition and Fertiliser Needs

Cited by 18 publications

References 13 publications

Controlled irrigation and nitrogen, phosphorous and potassium fertilization affect the biochemical composition and quality of Arabica coffee beans

Controlled irrigation and nitrogen, phosphorous and potassium fertilization affect the biochemical composition and quality of Arabica coffee beans

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

Absorção, translocação e utilização de zinco, cobre e manganês por mudas enxertadas de Coffea arabica

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