Dosis óptimas de nutrientes para cafetales en producción. 
Consideraciones económicas

Sadeghian, Siavosh; Orrego, Hernando Duque

doi:10.38141/10779/0533

Cited by 6 publications

(7 citation statements)

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“…N fertilizer application in coffee is relatively high with rates of 200 to 500 kg.ha -1 . year -1 [9,10,11,12,13]. The efficiency of the mineral N fertilizer or NUE depends on the N rate applied and crop N uptake at a given yield level.…”

Section: Of 16mentioning

confidence: 99%

“…The mean application of K by the coffee growers changes from region to region, with K fertilization rates between 100 kg to 400 kg K2O ha -1 .year -1 depending on the expected yield and K content in the soil [13,16,17,18]. In Colombia, for example, the economic optimum bean yield is achieved with a mean rate of 273 kg K2O ha -1 .year -1 in productive coffee plantations [12]. High K2O rates applied with MOP result in high inputs of Cl -, reaching up to 300 kg Cl -.ha -1 .year -1 .…”

Section: Of 16mentioning

confidence: 99%

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Chloride Nutrition Influences the Nitrogen Use Efficiency in Coffee.

Ramirez-Builes¹,

Küsters²,

Varon³

et al. 2023

Preprint

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Chloride (Cl-) is applied in coffee in rates as a “macronutrient” due that potassium (K+) is one of the most demanded nutrients by the coffee plant, and the potassium muriate (KCl) bases fertilizer is one the most used by the coffee growers. Does not exist scientific evidence that addresses the question regarding with which is the influences of the Cl- applied in the K fertilization base on MOP on coffee growth, nutrient uptake, and nitrogen use efficiency (NUE). Over four years, two trials were conducted on greenhouse and field conditions to address these questions. The trials set up were designed to test the influence of increased Cl- and reduced S rates on biomass accumulation, nutrient uptake, and NUE. A significant effect of the Cl- rates on growth was observed under greenhouse conditions but a non-significant effect on yield under field conditions. Cl- and S significantly influence the NUE in coffee. The result allows us to conclude that Cl- rates need to be balanced with S rates and that Cl- applied as a macronutrient can improve the NUE in coffee when those rates do not exceed 180 mg. L-1 Cl- and 80 mg.L-1 S in the greenhouse and 150 kg.ha-1.year-1 Cl- and 50 kg. ha-1.year-1 S in field conditions. In practical terms, coffee farmers need to balance the K base fertilizers sources to improve the nutrient use efficiency, especially the NUE.

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Section: Of 16mentioning

confidence: 99%

Section: Of 16mentioning

confidence: 99%

Chloride Nutrition Influences the Nitrogen Use Efficiency in Coffee.

Ramirez-Builes¹,

Küsters²,

Varon³

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…N fertilizer application in coffee is relatively high, with rates of 200 to 500 kg·ha −1 ·year −1 [ 10 , 11 , 12 , 13 , 14 ]. The efficiency of mineral N fertilizer or NUE depends on the N rate applied and the crop N uptake at a given yield level.…”

Section: Introductionmentioning

confidence: 99%

“…The mean application of K by the coffee production systems changes from region to region, with K fertilization rates between 100 and 400 kg K 2 O ha −1 ·year −1 depending on the expected yield and K content in the soil [ 14 , 17 , 18 , 19 ]. In Colombia, for example, the economic optimum coffee yield is achieved with a mean rate of 273 kg K 2 O ha −1 ·year −1 in productive coffee plantations [ 13 ]. High K 2 O rates applied with MOP result in high inputs of Cl − , reaching up to 300 kg Cl − ·ha −1 ·year −1 .…”

Section: Introductionmentioning

confidence: 99%

Influence of Variable Chloride/Sulfur Doses as Part of Potassium Fertilization on Nitrogen Use Efficiency by Coffee

Ramírez-Builes

Küsters

Thiele

et al. 2023

Plants

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Chloride (Cl−) is applied in coffee at rates as a “macronutrient” in the form of muriate of potash (MOP). Potassium (K+) is one of the most demanded nutrients by the coffee plant, and MOP is one of the most used fertilizers in coffee production. No scientific evidence shows how Cl− applied with MOP influences coffee growth, nutrient uptake, and nitrogen use efficiency (NUE). In order to address these questions, a greenhouse trial over two years and a field trial over four years were conducted. The trials were designed to test the influence of variable Cl−/S ratios on biomass accumulation, nutrient uptake, and NUE. A significant effect of the Cl− rates on growth was observed under greenhouse conditions but a non-significant effect on yield under field conditions. Cl− and S significantly influenced the NUE in coffee. The results allow us to conclude that Cl− rates need to be balanced with S rates, and that Cl− applied at macronutrient rates can improve the NUE in coffee between 7 and 21% in greenhouse conditions and between 9% and 14% in field conditions, as long as the rates do not exceed 180 mg L−1 Cl− and 80 mg·L−1 S in the greenhouse and 150 kg·ha−1·year−1 Cl− and 50 kg ha−1·year−1 S in the field. With the aim to improve the NUE in coffee, the Cl− content in leaves in coffee should be lower than 0.33% of dry matter, and in soil lower than 30 mg·L−1. In practical terms, coffee farmers need to balance K-based fertilizers to avoid the excessive Cl− applications that reduce the nutrient use efficiency, especially the NUE.

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“…Cenicafé ha generado resultados de investigación relacionados con la fertilización mediante estas fuentes en todas las etapas del cultivo, sin embargo, es escasa la información sobre una alternativa que combine los dos tipos de fuentes de fertilizantes en la fase productiva. Actualmente se propone integrar ambas fuentes en suelos con bajos contenidos de materia orgánica (menor del 6%), incorporando fertilizante orgánico al momento de la siembra o aplicándolo de manera superficial en el plato del árbol (Sadeghian, 2008(Sadeghian, , 2017. En suelos cultivados con café, el efecto benéfico de la fertilización orgánica se evidencia en la sustitución de los requerimientos de fertilizantes de síntesis química, el desarrollo y la producción del cultivo, además del incremento de la fertilidad del suelo; lo anterior reflejado en el aumento del pH, la capacidad de intercambio catiónico, los contenidos de bases intercambiables y algunos elementos menores, y la disminución del aluminio intercambiable, así como en el mejoramiento de las propiedades biológicas y físicas del suelo (Díaz et al, 2008;Suárez, 2001).…”

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