Chloride Applied via Fertilizer Affects Plant Nutrition and Coffee Quality

Santos, César Ferreira; Malta, Marcelo Ribeiro; Gonçalves, Mariana Gabriele Marcolino; Borém, Flávio Meira; Pozza, Adélia Aziz Alexandre; Martínez, Herminia; Souza, Taylor Lima de; Chagas, Wantuir Filipe Teixeira; Melo, Maria Elisa Araújo de; Oliveira, Dâmiany Pádua; Lima, Alan Dhan Costa; Abreu, Lívia Botelho de; Reis, Thiago Henrique Pereira; Souza, Thaís Regina de; Builes, Victor Ramirez; Guelfi, Douglas Ramos

doi:10.3390/plants12040885

Cited by 6 publications

(9 citation statements)

References 22 publications

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“…Those results are indicating that for coffee the ideal Clconcentration on the soil should be below 30 mg. L -1 . In Coffee in Brazil Santos et al [20], found a significant difference in the Clcontent in the soil, the treatments with 100% K + applied as MOP had an average Clcontent in the soil in the first 20 cm of the depth of 130 kg.ha -1 (approx. 65 mg.L -1 of Cl -), while the treatment without Clwith 100% K + applied as SOP had a significantly lower Clcontent in the soil at the same depth equivalent to 50 kg .ha -1 (approx.…”

Section: Clon the Soilmentioning

confidence: 93%

“…Excess supply and uptake of Clin plants is a serious problem, mainly in crops that grow on salt-affected soils [1,19]. Recently Santos et al [20] demonstrate the negative effect of the chloride applied via fertilizers in coffee with respect to the productivity and coffee cup quality in the Minas Gerais state of Brazil, but no references are available regarding the effects of high Clsupplies on nitrogen use efficiency (NUE) in coffee growing under rainfed conditions. Hence, this research aimed to evaluate the influence of Clapplied at rates of a macronutrient on coffee on NUE in coffee.…”

Section: Of 16mentioning

confidence: 99%

“…In this investigation, in both coffee trials, no stimulating effect of the application of Clon growth and yield was observed (Tables 1 and 3), otherwise a reduction in biomass accumulation in the greenhouse with Clrates higher than 60 mg.L -1 . At field conditions, in Brazil Santos et al [20] report yield reduction with the application of 100% of the K + as a MOP, which represented an average Cldose of 230 kg Cl.ha -1 .year -1 .…”

Section: Nutrient Concentration (%)mentioning

confidence: 99%

“…The discussion on the effect of Clon the quality of the coffee cup is still open. Silva et al [22] demonstrated more than ten years ago a reduction in quality parameters with the application of MOP in coffee, and recently Santos et al [20] demonstrated a significant reduction in the quality assessment of the coffee cup in treatments that had low and high proportions of Clin mineral K fertilization. But an interesting note in the study by Santos et al [20] is that the treatment without Clwas not the one that presented the highest yields in coffee, while the treatment with 25 to 50% of K + as MOP and 75% to 50% as SOP (57 to 115 kg Cl.ha -1 .year -1 ) presented the highest yield, probably related to the effect of Clon the NUE.…”

Section: Rosales Et Almentioning

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: Clon the Soilmentioning

confidence: 93%

Section: Of 16mentioning

confidence: 99%

Section: Nutrient Concentration (%)mentioning

confidence: 99%

Section: Rosales Et Almentioning

confidence: 99%

See 2 more Smart Citations

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

“…Excess supply and uptake of Cl − in plants is a serious problem, mainly in crops that grow on salt-affected soils [ 1 , 20 ]. Recently, Santos et al [ 21 ] demonstrated the negative effect of chloride applied via fertilizers in coffee with respect to productivity and coffee cup quality in the Minas Gerais state of Brazil, but no references are available regarding the effects of high Cl − supplies on nitrogen use efficiency (NUE) in coffee growing under rainfed conditions. Hence, this research aimed to evaluate the influence of Cl − applied at rates as a macronutrient for coffee regarding growth, productivity, nutrient uptake, and NUE in coffee.…”

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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