Results 31 to 40 of about 2,145 (144)

Avaliação de produtividade de progênies de cafeeiro em dois sistemas de plantio Yield evaluation of coffee plant (Coffea arabica L.) progenies in two tillage systems

open access: yesCiência e Agrotecnologia, 2006
Objetivou-se com o presente trabalho analisar a influência do sistema de plantio (adensado e convencional) e a produtividade de cafeeiros (Coffea arabica L.), resultantes do cruzamento de Catuaí Vermelho IAC 99 com Mundo Novo IAC 379-19. Foram utilizadas
Gladyston Rodrigues Carvalho   +4 more
doaj   +1 more source

Quality assessment of coffee grownin Campos Gerais, Minas Gerais State, Brazil

open access: yesActa Scientiarum: Technology, 2014
The objective of this work was to evaluate the quality of 6 samples of Arabica coffee (Red Catuaí/144, new World 4/376, new World Acaiá 19/474, Yellow Catuaí/62, new World 9/375, new World 19/379), subjected to medium roasting, cultivated in the ...
Polyanna Alves Silva   +4 more
doaj   +1 more source

Absorption and translocation of 14C‐propiconazole associated with two adjuvants in young coffee plants

open access: yesPest Management Science, EarlyView.
Experimental workflow evaluating 14C‐propiconazole absorption and translocation in Coffea arabica with two biodegradable adjuvants, quantified at six post‐application time points using radioscanner and liquid scintillation spectrometry. Abstract BACKGROUND This study evaluated the absorption, translocation and distribution of 14C‐propiconazole applied ...
Valéria de Souza Ivo   +4 more
wiley   +1 more source

Selection of Arabic coffee progenies with rust resistance [PDF]

open access: yesCrop Breeding and Applied Biotechnology, 2014
The aim of this study was to select high-yielding coffee progenies with resistance to coffee leaf rust for the State of Paraná (Brazil). Field experiments in a randomized block design were carried out in Itaguajé and Congonhinhas.
Gustavo Hiroshi Sera   +7 more
doaj   +1 more source

Optimization of coffee (Coffea arabica) transformation parameters using uidA and hpt genes: effect of osmotic pre-treatment, helium pressure and target distance

open access: yesRevista de Biología Tropical, 2009
The aim of this work was to optimize the biolistic delivery parameters that affect the DNA delivery and stable expression of marker genes into coffee tissues (Coffea arabica. L. cvs. Caturra and Catuaí).
Andrés M Gatica   +2 more
doaj   +2 more sources

Avaliação da maturação dos frutos de linhagens das cultivares Catuaí Amarelo e Catuaí Vermelho(Coffea arabica L.) plantadas individualmente e em combinações Fruit ripening evaluations of Catuai Amarelo and Vermelho (Coffea arabica L.) lineages of coffee cultivar, planted isolated and in combinations

open access: yesCiência e Agrotecnologia, 2005
Instalou-se este experimento na Fazenda Experimental da EPAMIG em São Sebastião do Paraíso, MG, com o objetivo de avaliar as percentagens de frutos chochos e maturação de linhagens das cultivares Catuaí Vermelho (IAC 44, IAC 81 e IAC 99) e Catuaí Amarelo
Ângela Maria Nogueira   +3 more
doaj   +1 more source

Molecular Identification of Fusarium Species Associated With Coffee Plantations in Bolivia

open access: yesJournal of Phytopathology, Volume 174, Issue 4, July/August 2026.
ABSTRACT Fungal species associated with coffee and their pathogenic potential remain underexplored in Bolivia. This study aimed to investigate the diversity of Fusarium species associated with coffee in the Amazon basin of Caranavi province in the Yungas region of Bolivia and their ability to induce disease symptoms under controlled conditions. A total
Marisel M. Mamani   +8 more
wiley   +1 more source

Secondary Metabolites of Calonectria hemileiae Inhibit Hemileia vastatrix Urediniospore Germination: Evidence for Chemical Mediation in a Mycoparasitic Interaction

open access: yesPlant Pathology, Volume 75, Issue 4, July‐August 2026.
Calonectria hemileiae, an antagonist of the coffee leaf rust pathogen Hemileia vastatrix, produces low‐molecular weight secondary metabolites that inhibit urediniospore germination. These metabolites likely mediate interfungal interactions and show potential for the development of biofungicides against coffee leaf rust.
Gustavo Silva França de Souza   +7 more
wiley   +1 more source

Weed Management Influences the Accumulation of Organic Matter in the Soil and Productivity in Coffee Farming

open access: yesNew Zealand Journal of Crop and Horticultural Science, Volume 54, Issue 2, June 2026.
The management of weeds can influence organic matter (OM) and organic carbon (OC) levels, impacting the productivity and sustainability of coffee plantations. This study aimed to evaluate OM and OC levels in coffee soils under different weed management practices and their influence on coffee tree physiology and productivity. The experiment featured six
Indira Pereira de Oliveira   +9 more
wiley   +1 more source

Assessing the Impact of Nitrogen Trade‐Off Between Coffee Tree Productivity and Bean Sensory Attributes to Produce Australian ‘Specialty Coffee’

open access: yesNew Zealand Journal of Crop and Horticultural Science, Volume 54, Issue 2, June 2026.
Effective nitrogen management is essential for sustainable coffee production and enhanced yield. This study evaluated the effects of five nitrogen application rates (per annum; N1: 120 kg/ha, N2: 240 kg/ha, N3: 360 kg/ha, N4: 480 kg/ha, N5: 600 kg/ha) applied in equally distributed monthly rates over 2 years, from flowering to harvest, on Coffea ...
Fawad Ali, Heather Smyth, Rebecca Ford
wiley   +1 more source

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