Período de incubação da ferrugem do cafeeiro

Alfonsi, Waldenilza Monteiro Vital; Coltri, Priscila Pereira; Júnior, Jurandir Zullo; Patrício, Flávia Rodrigues Alves; Alfonsi, Eduardo Lauriano

doi:10.1590/0100-5405/187216

Cited by 3 publications

(3 citation statements)

References 10 publications

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“…The coffee tree is biennial and its highest production years are more susceptible to diseases due to the quantity of foliar area and nutrients required for crop growth (Pozza;Pozza, 2003). Coffee leaf rust is caused by the biotrophic fungus Hemileia vastatrix and it is one of the major leaf diseases of the crop (Alfonsi et al, 2019). The fungus was first found in Sri Lanka (former Ceylon) in 1869 and was first reported in 1970 in Bahia (Bergamim Filho et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

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Management of coffee leaf rust using L-glutamic acid biofertilizer combined with fungicide

Cabral

Mafra

Carvalho

et al. 2022

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The use of biofertilizers is a potential tool for the management of crop diseases. Coffee leaf rust, which is commonly controlled by triazole and strobilurin fungicides, is one of the main phytosanitary challenges associated with coffee cultivation. However, the indiscriminate use of such fungicides may be harmful to the environment and human health, in addition to having a negative impact on coffee exports. The aim of this study was to evaluate the effect of foliar application of L-glutamic acid on the incidence and severity of coffee leaf rust in the southern region of Minas Gerais, Brazil. A biofertilizer made of sugarcane molasses fermented by the bacterium Corynebacterium glutamicum was used in combination with 25% L-glutamic acid and a fungicide of the triazole group registered for crops. The experimental design adopted was randomized blocks with four replications (eight plants per replicate) and seven treatments: fungicide, control test, 0.8 L ha -1 of biofertilizer, combinations of 0.04, 0.06, 0.08, and 0.1 L ha -1 of biofertilizer and fungicide. Three treatments were initially applied in a preventive way, before the rainy season, and then at intervals of 60 days. After seven months of treatment, we observed that coffee leaf rust incidence was significantly lower in coffee plants treated with combined products than in treatments of either fungicide or biofertilizer only, with a reduction of 56% and 45%, respectively, being observed. Among the combinations of biofertilizer and fungicide, coffee leaf rust incidence reduced with an increase in the biofertilizer dose, such that the disease incidence in plants treated with a dose of 0.1 L ha -1 was 58% lower than that in plants treated with fungicide only. No differences in disease severity were observed among the treatments. In conclusion, the use of a combination of biofertilizer and fungicide is more effective for the management of coffee leaf rust than the use of the isolated products.

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Section: Introductionmentioning

confidence: 99%

“…Disease damage is indirect, such as defoliation and death of plagiotropic branches, resulting in the loss of leaf photosynthetic area. A reduction in flowers and poor fruit formation occurs when the leaves fall before floral induction or during fruit formation, which may cause a 50% reduction in coffee productivity (Alfonsi et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Management of coffee leaf rust using L-glutamic acid biofertilizer combined with fungicide

Cabral

Mafra

Carvalho

et al. 2022

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“…Coffee is a crop of great agronomic interest worldwide. It is one of the most negotiable tropical products, and has been gaining "specialty" status around the world, especially considering the great amount of gourmet coffee beans on the market (Alfonsi et al, 2019). According to Iscaro (2014), in agreement with Davis et al (2012), coffee is, after petroleum, the most commercialized commodity in the world.…”

Section: Introductionmentioning

confidence: 99%

Change analyses of coffee soil cover in the State of Paraná

Lima

Coltri

2021

Labor e Eng.

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Coffee is a crop of great agronomic interest worldwide. It is one of the most negotiable tropical products, and it has been gaining “specialty” status around the world, with increasing number of plantations in places with Geographical Indications. Studies show that coffee has been undergoing recent changes in planting area, due to different economic, social, cultural, and climatic reasons. The change of in the planted area of a crop causes many different events; among them, the substitution of it for other agricultural crops. As such, sugarcane is a crop that has been recently gaining space, as its planted area increased considerably. In this sense, this work sought to analyze the change in the use and occupation of coffee soil in the State of Paraná between 1998 and 2018, comparing it with the change in the use of sugarcane soil; with altitude; and with regions with indication of source in the state. The results suggest a reduction of 92.29% of the planted area of coffee and an increase of 289.87% in the planted area of sugarcane. The results also suggests that coffee was replaced by sugarcane in some sites. The remaining coffee plantations were concentrated in the region of indication of source in the Northern region of the state, which has lower altitudes.

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Coffee Rust Forecast Systems: Development of a Warning Platform in a Minas Gerais State, Brazil

et al. 2021

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This study aimed to develop a warning system platform for coffee rust incidence fifteen days in advance, as well as validating and regionalizing multiple linear regression models based on meteorological variables. The models developed by Pinto were validated in five counties. Experiments were set up in a randomized block design with five treatments and five replications. The experimental plot had six lines with 20 central plants of useful area. Assessments of coffee rust incidence were carried out fortnightly. The data collected from automatic stations were adjusted in new multiple linear regression models (MLRM) for five counties. Meteorological variables were lagged concerning disease assessment dates. After the adjustments, two models were selected and calculated for five counties, later there was an expansion to include ten more counties and 35 properties to validate these models. The result showed that the adjusted models of 15–30 days before rust incidence for Carmo do Rio Claro and Nova Resende counties were promising. These models were the best at forecasting disease 15 days in advance. With these models and the geoinformation systems, the warning platform and interface will be improved in the coffee grower region of the south and savannas of the Minas Gerais State, Brazil.

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Período de incubação da ferrugem do cafeeiro

Cited by 3 publications

References 10 publications

Management of coffee leaf rust using L-glutamic acid biofertilizer combined with fungicide

Management of coffee leaf rust using L-glutamic acid biofertilizer combined with fungicide

Change analyses of coffee soil cover in the State of Paraná

Coffee Rust Forecast Systems: Development of a Warning Platform in a Minas Gerais State, Brazil

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